From 9d8c8551ed5656d67e19309b5a18094218459ad2 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Sun, 8 Jun 2025 11:46:57 +0400
Subject: [PATCH 01/28] initialize cargo crate

---
 .envrc                   |   10 +
 .gitignore               |    4 +-
 Cargo.lock               | 3853 ++++++++++++++++++++++++++++++++++++++
 Cargo.toml               |   12 +
 crates/float/Cargo.toml  |    7 +
 crates/float/src/main.rs |    3 +
 flake.lock               |   30 +-
 7 files changed, 3903 insertions(+), 16 deletions(-)
 create mode 100644 .envrc
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 crates/float/Cargo.toml
 create mode 100644 crates/float/src/main.rs

diff --git a/.envrc b/.envrc
new file mode 100644
index 00000000..a3693d2d
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,10 @@
+if ! has nix_direnv_version || ! nix_direnv_version 3.0.6; then
+  URL=https://raw.githubusercontent.com/nix-community/nix-direnv/3.0.6/direnvrc
+  HASH=sha256-RYcUJaRMf8oF5LznDrlCXbkOQrywm0HDv1VjYGaJGdM=
+  source_url "$URL" "$HASH"
+fi
+
+watch_file flake.lock
+watch_file flake.nix
+
+use flake . --verbose --show-trace
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index bf3d16b4..805c9107 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 out
-cache
\ No newline at end of file
+cache
+.direnv
+target
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 00000000..39f1140f
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,3853 @@
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+# It is not intended for manual editing.
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "winnow"
+version = "0.7.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c06928c8748d81b05c9be96aad92e1b6ff01833332f281e8cfca3be4b35fc9ec"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "wit-bindgen-rt"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "writeable"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ea2f10b9bb0928dfb1b42b65e1f9e36f7f54dbdf08457afefb38afcdec4fa2bb"
+
+[[package]]
+name = "wyz"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05f360fc0b24296329c78fda852a1e9ae82de9cf7b27dae4b7f62f118f77b9ed"
+dependencies = [
+ "tap",
+]
+
+[[package]]
+name = "yoke"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f41bb01b8226ef4bfd589436a297c53d118f65921786300e427be8d487695cc"
+dependencies = [
+ "serde",
+ "stable_deref_trait",
+ "yoke-derive",
+ "zerofrom",
+]
+
+[[package]]
+name = "yoke-derive"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38da3c9736e16c5d3c8c597a9aaa5d1fa565d0532ae05e27c24aa62fb32c0ab6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+ "synstructure",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1702d9583232ddb9174e01bb7c15a2ab8fb1bc6f227aa1233858c351a3ba0cb"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28a6e20d751156648aa063f3800b706ee209a32c0b4d9f24be3d980b01be55ef"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
+[[package]]
+name = "zerofrom"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "50cc42e0333e05660c3587f3bf9d0478688e15d870fab3346451ce7f8c9fbea5"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+ "synstructure",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"
+dependencies = [
+ "zeroize_derive",
+]
+
+[[package]]
+name = "zeroize_derive"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
+[[package]]
+name = "zerotrie"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36f0bbd478583f79edad978b407914f61b2972f5af6fa089686016be8f9af595"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+]
+
+[[package]]
+name = "zerovec"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a05eb080e015ba39cc9e23bbe5e7fb04d5fb040350f99f34e338d5fdd294428"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b96237efa0c878c64bd89c436f661be4e46b2f3eff1ebb976f7ef2321d2f58f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 00000000..78a29898
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,12 @@
+[workspace]
+members = ["crates/*"]
+resolver = "2"
+
+[workspace.package]
+edition = "2024"
+version = "0.1.0"
+license = "CAL-1.0"
+homepage = "https://github.com/rainprotocol/rain.math.float"
+
+[workspace.dependencies]
+alloy = { version = "1.0.9", features = ["sol-types", "json", "json-abi"] }
diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
new file mode 100644
index 00000000..c746eebc
--- /dev/null
+++ b/crates/float/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "rain-math-float"
+version.workspace = true
+edition.workspace = true
+
+[dependencies]
+alloy.workspace = true
diff --git a/crates/float/src/main.rs b/crates/float/src/main.rs
new file mode 100644
index 00000000..e7a11a96
--- /dev/null
+++ b/crates/float/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}
diff --git a/flake.lock b/flake.lock
index 09614c3d..2c5fe29f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -104,11 +104,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1747828570,
-        "narHash": "sha256-tv8R4Z/69GC8zogsb5TNDRj5tkhMeHpyYIzRl1cJigo=",
+        "lastModified": 1749104371,
+        "narHash": "sha256-m2NmOPd6XgBiskmUq/BS9Xxuf3z0ebnGVfSKNAO5NEM=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "040a62f13f40879a05578a66dd4ae0d284c55a5b",
+        "rev": "48975d7f9b9960ed33c4e8561bcce20cc0c2de5b",
         "type": "github"
       },
       "original": {
@@ -135,11 +135,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1731531548,
-        "narHash": "sha256-sz8/v17enkYmfpgeeuyzniGJU0QQBfmAjlemAUYhfy8=",
+        "lastModified": 1748662220,
+        "narHash": "sha256-7gGa49iB9nCnFk4h/g9zwjlQAyjtpgcFkODjcOQS0Es=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "24f0d4acd634792badd6470134c387a3b039dace",
+        "rev": "59138c7667b7970d205d6a05a8bfa2d78caa3643",
         "type": "github"
       },
       "original": {
@@ -158,11 +158,11 @@
         "solc": "solc"
       },
       "locked": {
-        "lastModified": 1748346550,
-        "narHash": "sha256-Rlaj/hHHACo0blFKane6/arqIXWUCGe/sCNgqX8VfZ8=",
+        "lastModified": 1749284231,
+        "narHash": "sha256-2pxLmguxgvcIaoCrxrrJaod+Sen/HjULnibdjogNp14=",
         "owner": "rainprotocol",
         "repo": "rainix",
-        "rev": "a1a5c321f356cb5006d16dd2d1a2242c183b7e96",
+        "rev": "f3ef7c9b21db154d6e57858aa2f59ce40e6677bb",
         "type": "github"
       },
       "original": {
@@ -182,11 +182,11 @@
         "nixpkgs": "nixpkgs_3"
       },
       "locked": {
-        "lastModified": 1747795013,
-        "narHash": "sha256-c7i0xJ+xFhgjO9SWHYu5dF/7lq63RPDvwKAdjc6VCE4=",
+        "lastModified": 1749091064,
+        "narHash": "sha256-TGtYjzRX0sueFhwYsnNNFF5TTKnpnloznpIghLzxeXo=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "6b1cf12374361859242a562e1933a7930649131a",
+        "rev": "12419593ce78f2e8e1e89a373c6515885e218acb",
         "type": "github"
       },
       "original": {
@@ -202,11 +202,11 @@
         "solc-macos-amd64-list-json": "solc-macos-amd64-list-json"
       },
       "locked": {
-        "lastModified": 1742758229,
-        "narHash": "sha256-FrU9rhab/0vOjjeFoQF+Ej43zRLv3enUIYjgLrH3Gd8=",
+        "lastModified": 1748780655,
+        "narHash": "sha256-mradCdMvjXwKd7kVFACB/d1CP2LLCyEgUu4vJCSzNLU=",
         "owner": "hellwolf",
         "repo": "solc.nix",
-        "rev": "6885b61bac89da19a6e3c70b89fdd592e2cef884",
+        "rev": "3b6f3223ace5a7bc400b01a434d86bb1cb2593fb",
         "type": "github"
       },
       "original": {

From 87ee8ea4868a912741c534a9780c4c98aeb03918 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Sun, 8 Jun 2025 11:48:19 +0400
Subject: [PATCH 02/28] update ci

---
 .github/workflows/rainix.yaml | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/.github/workflows/rainix.yaml b/.github/workflows/rainix.yaml
index 86411aa3..a679af5b 100644
--- a/.github/workflows/rainix.yaml
+++ b/.github/workflows/rainix.yaml
@@ -6,7 +6,8 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        task: [rainix-sol-test, rainix-sol-static]
+        task:
+          [rainix-sol-test, rainix-sol-static, rainix-rs-test, rainix-rs-static]
       fail-fast: false
     runs-on: ${{ matrix.os }}
     env:
@@ -29,19 +30,16 @@ jobs:
           primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
           # if there's no cache hit, restore a cache by this prefix
           restore-prefixes-first-match: nix-${{ runner.os }}-
-          # collect garbage until the Nix store size (in bytes) is at most this number
-          # before trying to save a new cache
-          # 1G = 1073741824
           gc-max-store-size-linux: 1G
 
       - name: Run ${{ matrix.task }}
         env:
           ETH_RPC_URL: ${{ secrets.CI_DEPLOY_SEPOLIA_RPC_URL || vars.CI_DEPLOY_SEPOLIA_RPC_URL }}
           ETHERSCAN_API_KEY: ${{ secrets.EXPLORER_VERIFICATION_KEY }}
-          DEPLOY_BROADCAST: ''
-          DEPLOY_VERIFIER: ''
+          DEPLOY_BROADCAST: ""
+          DEPLOY_VERIFIER: ""
           DEPLOY_METABOARD_ADDRESS: ${{ vars.CI_DEPLOY_SEPOLIA_METABOARD_ADDRESS }}
           CI_FORK_SEPOLIA_BLOCK_NUMBER: ${{ vars.CI_FORK_SEPOLIA_BLOCK_NUMBER }}
           CI_FORK_SEPOLIA_DEPLOYER_ADDRESS: ${{ vars.CI_FORK_SEPOLIA_DEPLOYER_ADDRESS }}
           CI_DEPLOY_SEPOLIA_RPC_URL: ${{ secrets.CI_DEPLOY_SEPOLIA_RPC_URL || vars.CI_DEPLOY_SEPOLIA_RPC_URL }}
-        run: nix develop -c ${{ matrix.task }}
\ No newline at end of file
+        run: nix develop -c ${{ matrix.task }}

From f87cde331839b9702971c993febf8748b72b154b Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Sun, 8 Jun 2025 11:49:26 +0400
Subject: [PATCH 03/28] add ci concurrency config

---
 .github/workflows/git-clean.yaml | 6 +++++-
 .github/workflows/rainix.yaml    | 4 ++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/git-clean.yaml b/.github/workflows/git-clean.yaml
index 09870919..5bfcf75f 100644
--- a/.github/workflows/git-clean.yaml
+++ b/.github/workflows/git-clean.yaml
@@ -1,6 +1,10 @@
 name: Git is clean
 on: [push]
 
+concurrency:
+  group: ${{ github.ref }}-git-clean
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
 jobs:
   git-clean:
     runs-on: ubuntu-latest
@@ -34,4 +38,4 @@ jobs:
       - run: nix develop -c forge fmt
 
       # Check if the repo is clean after generating pointers and formatting.
-      - run: git diff --exit-code
\ No newline at end of file
+      - run: git diff --exit-code
diff --git a/.github/workflows/rainix.yaml b/.github/workflows/rainix.yaml
index a679af5b..4e8a053b 100644
--- a/.github/workflows/rainix.yaml
+++ b/.github/workflows/rainix.yaml
@@ -1,6 +1,10 @@
 name: Rainix CI
 on: [push]
 
+concurrency:
+  group: ${{ github.ref }}-rainix
+  cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
+
 jobs:
   rainix:
     strategy:

From 01a54398ea0769f76564f0ee192818fbc0601cc4 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Sun, 8 Jun 2025 12:08:06 +0400
Subject: [PATCH 04/28] --amend

---
 .github/workflows/git-clean.yaml | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/.github/workflows/git-clean.yaml b/.github/workflows/git-clean.yaml
index 5bfcf75f..2472c617 100644
--- a/.github/workflows/git-clean.yaml
+++ b/.github/workflows/git-clean.yaml
@@ -26,9 +26,6 @@ jobs:
           primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
           # if there's no cache hit, restore a cache by this prefix
           restore-prefixes-first-match: nix-${{ runner.os }}-
-          # collect garbage until the Nix store size (in bytes) is at most this number
-          # before trying to save a new cache
-          # 1G = 1073741824
           gc-max-store-size-linux: 1G
 
       - run: nix develop -c forge script ./script/BuildPointers.sol

From 5966f9900840c0b26b89c8be3977c876776708e8 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Mon, 9 Jun 2025 14:46:02 +0400
Subject: [PATCH 05/28] db wip

---
 .vscode/settings.json    |   4 +
 Cargo.lock               | 654 ++++++++++++++++++++++++++++++++++++++-
 Cargo.toml               |   2 +
 crates/float/Cargo.toml  |   2 +
 crates/float/src/lib.rs  |  15 +
 crates/float/src/main.rs |   3 -
 6 files changed, 674 insertions(+), 6 deletions(-)
 create mode 100644 .vscode/settings.json
 create mode 100644 crates/float/src/lib.rs
 delete mode 100644 crates/float/src/main.rs

diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 00000000..7b95e511
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,4 @@
+{
+    "solidity.compileUsingRemoteVersion": "v0.8.25+commit.b61c2a91",
+    "solidity.formatter": "forge"
+}
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index 39f1140f..f94fca1a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -17,6 +17,18 @@ version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "512761e0bb2578dd7380c6baaa0f4ce03e84f95e960231d1dec8bf4d7d6e2627"
 
+[[package]]
+name = "ahash"
+version = "0.8.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a15f179cd60c4584b8a8c596927aadc462e27f2ca70c04e0071964a73ba7a75"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "version_check",
+ "zerocopy",
+]
+
 [[package]]
 name = "allocator-api2"
 version = "0.2.21"
@@ -176,6 +188,7 @@ checksum = "9d4769c6ffddca380b0070d71c8b7f30bed375543fe76bb2f74ec0acf4b7cd16"
 dependencies = [
  "alloy-primitives",
  "alloy-rlp",
+ "k256",
  "serde",
  "thiserror",
 ]
@@ -197,7 +210,7 @@ dependencies = [
  "derive_more",
  "either",
  "serde",
- "sha2",
+ "sha2 0.10.9",
 ]
 
 [[package]]
@@ -618,6 +631,51 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "ark-bls12-381"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3df4dcc01ff89867cd86b0da835f23c3f02738353aaee7dde7495af71363b8d5"
+dependencies = [
+ "ark-ec",
+ "ark-ff 0.5.0",
+ "ark-serialize 0.5.0",
+ "ark-std 0.5.0",
+]
+
+[[package]]
+name = "ark-bn254"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d69eab57e8d2663efa5c63135b2af4f396d66424f88954c21104125ab6b3e6bc"
+dependencies = [
+ "ark-ec",
+ "ark-ff 0.5.0",
+ "ark-r1cs-std",
+ "ark-std 0.5.0",
+]
+
+[[package]]
+name = "ark-ec"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43d68f2d516162846c1238e755a7c4d131b892b70cc70c471a8e3ca3ed818fce"
+dependencies = [
+ "ahash",
+ "ark-ff 0.5.0",
+ "ark-poly",
+ "ark-serialize 0.5.0",
+ "ark-std 0.5.0",
+ "educe",
+ "fnv",
+ "hashbrown 0.15.4",
+ "itertools 0.13.0",
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+ "zeroize",
+]
+
 [[package]]
 name = "ark-ff"
 version = "0.3.0"
@@ -656,6 +714,26 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "ark-ff"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a177aba0ed1e0fbb62aa9f6d0502e9b46dad8c2eab04c14258a1212d2557ea70"
+dependencies = [
+ "ark-ff-asm 0.5.0",
+ "ark-ff-macros 0.5.0",
+ "ark-serialize 0.5.0",
+ "ark-std 0.5.0",
+ "arrayvec",
+ "digest 0.10.7",
+ "educe",
+ "itertools 0.13.0",
+ "num-bigint",
+ "num-traits",
+ "paste",
+ "zeroize",
+]
+
 [[package]]
 name = "ark-ff-asm"
 version = "0.3.0"
@@ -676,6 +754,16 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "ark-ff-asm"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62945a2f7e6de02a31fe400aa489f0e0f5b2502e69f95f853adb82a96c7a6b60"
+dependencies = [
+ "quote",
+ "syn 2.0.101",
+]
+
 [[package]]
 name = "ark-ff-macros"
 version = "0.3.0"
@@ -701,6 +789,63 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "ark-ff-macros"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09be120733ee33f7693ceaa202ca41accd5653b779563608f1234f78ae07c4b3"
+dependencies = [
+ "num-bigint",
+ "num-traits",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
+[[package]]
+name = "ark-poly"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "579305839da207f02b89cd1679e50e67b4331e2f9294a57693e5051b7703fe27"
+dependencies = [
+ "ahash",
+ "ark-ff 0.5.0",
+ "ark-serialize 0.5.0",
+ "ark-std 0.5.0",
+ "educe",
+ "fnv",
+ "hashbrown 0.15.4",
+]
+
+[[package]]
+name = "ark-r1cs-std"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "941551ef1df4c7a401de7068758db6503598e6f01850bdb2cfdb614a1f9dbea1"
+dependencies = [
+ "ark-ec",
+ "ark-ff 0.5.0",
+ "ark-relations",
+ "ark-std 0.5.0",
+ "educe",
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+ "tracing",
+]
+
+[[package]]
+name = "ark-relations"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec46ddc93e7af44bcab5230937635b06fb5744464dd6a7e7b083e80ebd274384"
+dependencies = [
+ "ark-ff 0.5.0",
+ "ark-std 0.5.0",
+ "tracing",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "ark-serialize"
 version = "0.3.0"
@@ -722,6 +867,30 @@ dependencies = [
  "num-bigint",
 ]
 
+[[package]]
+name = "ark-serialize"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f4d068aaf107ebcd7dfb52bc748f8030e0fc930ac8e360146ca54c1203088f7"
+dependencies = [
+ "ark-serialize-derive",
+ "ark-std 0.5.0",
+ "arrayvec",
+ "digest 0.10.7",
+ "num-bigint",
+]
+
+[[package]]
+name = "ark-serialize-derive"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "213888f660fddcca0d257e88e54ac05bca01885f258ccdf695bafd77031bb69d"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
 [[package]]
 name = "ark-std"
 version = "0.3.0"
@@ -742,6 +911,22 @@ dependencies = [
  "rand 0.8.5",
 ]
 
+[[package]]
+name = "ark-std"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "246a225cc6131e9ee4f24619af0f19d67761fff15d7ccc22e42b80846e69449a"
+dependencies = [
+ "num-traits",
+ "rand 0.8.5",
+]
+
+[[package]]
+name = "arrayref"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76a2e8124351fda1ef8aaaa3bbd7ebbcb486bbcd4225aca0aa0d84bb2db8fecb"
+
 [[package]]
 name = "arrayvec"
 version = "0.7.6"
@@ -784,6 +969,16 @@ dependencies = [
  "syn 2.0.101",
 ]
 
+[[package]]
+name = "aurora-engine-modexp"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "518bc5745a6264b5fd7b09dffb9667e400ee9e2bbe18555fac75e1fe9afa0df9"
+dependencies = [
+ "hex",
+ "num",
+]
+
 [[package]]
 name = "auto_impl"
 version = "1.3.0"
@@ -870,6 +1065,9 @@ name = "bitflags"
 version = "2.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "bitvec"
@@ -879,10 +1077,20 @@ checksum = "1bc2832c24239b0141d5674bb9174f9d68a8b5b3f2753311927c172ca46f7e9c"
 dependencies = [
  "funty",
  "radium",
+ "serde",
  "tap",
  "wyz",
 ]
 
+[[package]]
+name = "block-buffer"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4152116fd6e9dadb291ae18fc1ec3575ed6d84c29642d97890f4b4a3417297e4"
+dependencies = [
+ "generic-array",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.10.4"
@@ -1167,6 +1375,17 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "derive-where"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e73f2692d4bd3cac41dca28934a39894200c9fabf49586d77d0e5954af1d7902"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
 [[package]]
 name = "derive_more"
 version = "2.0.1"
@@ -1203,7 +1422,7 @@ version = "0.10.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
- "block-buffer",
+ "block-buffer 0.10.4",
  "const-oid",
  "crypto-common",
  "subtle",
@@ -1241,6 +1460,18 @@ dependencies = [
  "spki",
 ]
 
+[[package]]
+name = "educe"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d7bc049e1bd8cdeb31b68bbd586a9464ecf9f3944af3958a7a9d0f8b9799417"
+dependencies = [
+ "enum-ordinalize",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
 [[package]]
 name = "either"
 version = "1.15.0"
@@ -1270,6 +1501,26 @@ dependencies = [
  "zeroize",
 ]
 
+[[package]]
+name = "enum-ordinalize"
+version = "4.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fea0dcfa4e54eeb516fe454635a95753ddd39acda650ce703031c6973e315dd5"
+dependencies = [
+ "enum-ordinalize-derive",
+]
+
+[[package]]
+name = "enum-ordinalize-derive"
+version = "4.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d28318a75d4aead5c4db25382e8ef717932d0346600cacae6357eb5941bc5ff"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -1896,6 +2147,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itertools"
 version = "0.14.0"
@@ -1932,7 +2192,7 @@ dependencies = [
  "elliptic-curve",
  "once_cell",
  "serdect",
- "sha2",
+ "sha2 0.10.9",
 ]
 
 [[package]]
@@ -1972,6 +2232,52 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f9fbbcab51052fe104eb5e5d351cf728d30a5be1fe14d9be8a3b097481fb97de"
 
+[[package]]
+name = "libsecp256k1"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e79019718125edc905a079a70cfa5f3820bc76139fc91d6f9abc27ea2a887139"
+dependencies = [
+ "arrayref",
+ "base64",
+ "digest 0.9.0",
+ "libsecp256k1-core",
+ "libsecp256k1-gen-ecmult",
+ "libsecp256k1-gen-genmult",
+ "rand 0.8.5",
+ "serde",
+ "sha2 0.9.9",
+]
+
+[[package]]
+name = "libsecp256k1-core"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5be9b9bb642d8522a44d533eab56c16c738301965504753b03ad1de3425d5451"
+dependencies = [
+ "crunchy",
+ "digest 0.9.0",
+ "subtle",
+]
+
+[[package]]
+name = "libsecp256k1-gen-ecmult"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3038c808c55c87e8a172643a7d87187fc6c4174468159cb3090659d55bcb4809"
+dependencies = [
+ "libsecp256k1-core",
+]
+
+[[package]]
+name = "libsecp256k1-gen-genmult"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3db8d6ba2cec9eacc40e6e8ccc98931840301f1006e95647ceb2dd5c3aa06f7c"
+dependencies = [
+ "libsecp256k1-core",
+]
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.9.4"
@@ -2069,6 +2375,20 @@ dependencies = [
  "tempfile",
 ]
 
+[[package]]
+name = "num"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35bd024e8b2ff75562e5f34e7f4905839deb4b22955ef5e73d2fea1b9813cb23"
+dependencies = [
+ "num-bigint",
+ "num-complex",
+ "num-integer",
+ "num-iter",
+ "num-rational",
+ "num-traits",
+]
+
 [[package]]
 name = "num-bigint"
 version = "0.4.6"
@@ -2079,6 +2399,15 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-complex"
+version = "0.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73f88a1307638156682bada9d7604135552957b7818057dcef22705b4d509495"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.1.0"
@@ -2094,6 +2423,28 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-iter"
+version = "0.1.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1429034a0490724d0075ebb2bc9e875d6503c3cf69e235a8941aa757d83ef5bf"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "num-rational"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f83d14da390562dca69fc84082e73e548e1ad308d24accdedd2720017cb37824"
+dependencies = [
+ "num-bigint",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -2129,6 +2480,7 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af1844ef2428cc3e1cb900be36181049ef3d3193c63e43026cfe202983b27a56"
 dependencies = [
+ "proc-macro-crate",
  "proc-macro2",
  "quote",
  "syn 2.0.101",
@@ -2162,6 +2514,12 @@ version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
+[[package]]
+name = "opaque-debug"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c08d65885ee38876c4f86fa503fb49d7b507c2b62552df7c70b2fce627e06381"
+
 [[package]]
 name = "openssl"
 version = "0.10.73"
@@ -2206,6 +2564,18 @@ dependencies = [
  "vcpkg",
 ]
 
+[[package]]
+name = "p256"
+version = "0.13.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9863ad85fa8f4460f9c48cb909d38a0d689dba1f6f6988a5e3e0d31071bcd4b"
+dependencies = [
+ "ecdsa",
+ "elliptic-curve",
+ "primeorder",
+ "sha2 0.10.9",
+]
+
 [[package]]
 name = "parity-scale-codec"
 version = "3.7.5"
@@ -2280,6 +2650,49 @@ dependencies = [
  "ucd-trie",
 ]
 
+[[package]]
+name = "phf"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd6780a80ae0c52cc120a26a1a42c1ae51b247a253e4e06113d23d2c2edd078"
+dependencies = [
+ "phf_macros",
+ "phf_shared",
+ "serde",
+]
+
+[[package]]
+name = "phf_generator"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c80231409c20246a13fddb31776fb942c38553c51e871f8cbd687a4cfb5843d"
+dependencies = [
+ "phf_shared",
+ "rand 0.8.5",
+]
+
+[[package]]
+name = "phf_macros"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f84ac04429c13a7ff43785d75ad27569f2951ce0ffd30a3321230db2fc727216"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.101",
+]
+
+[[package]]
+name = "phf_shared"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67eabc2ef2a60eb7faa00097bd1ffdb5bd28e62bf39990626a582201b7a754e5"
+dependencies = [
+ "siphasher",
+]
+
 [[package]]
 name = "pin-project"
 version = "1.1.10"
@@ -2352,6 +2765,15 @@ dependencies = [
  "zerocopy",
 ]
 
+[[package]]
+name = "primeorder"
+version = "0.13.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "353e1ca18966c16d9deb1c69278edbc5f194139612772bd9537af60ac231e1e6"
+dependencies = [
+ "elliptic-curve",
+]
+
 [[package]]
 name = "primitive-types"
 version = "0.12.2"
@@ -2455,6 +2877,8 @@ name = "rain-math-float"
 version = "0.1.0"
 dependencies = [
  "alloy",
+ "lazy_static",
+ "revm",
 ]
 
 [[package]]
@@ -2582,6 +3006,191 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "revm"
+version = "25.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08fd78df29217546ddfd587fe313aff2bf86e57cfe0f18d16cb326d9f50ba54d"
+dependencies = [
+ "revm-bytecode",
+ "revm-context",
+ "revm-context-interface",
+ "revm-database",
+ "revm-database-interface",
+ "revm-handler",
+ "revm-inspector",
+ "revm-interpreter",
+ "revm-precompile",
+ "revm-primitives",
+ "revm-state",
+]
+
+[[package]]
+name = "revm-bytecode"
+version = "4.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "942fe4724cf552fd28db6b0a2ca5b79e884d40dd8288a4027ed1e9090e0c6f49"
+dependencies = [
+ "bitvec",
+ "once_cell",
+ "phf",
+ "revm-primitives",
+ "serde",
+]
+
+[[package]]
+name = "revm-context"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "190f211f04c8030f5393cfcfa1569b88d5649f0f266bf4291981ba879fa6c5d1"
+dependencies = [
+ "cfg-if",
+ "derive-where",
+ "revm-bytecode",
+ "revm-context-interface",
+ "revm-database-interface",
+ "revm-primitives",
+ "revm-state",
+ "serde",
+]
+
+[[package]]
+name = "revm-context-interface"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42b7e7ff1154e6460cec025fe20dfe45f3325bbb905718643b6d053ec49da6e8"
+dependencies = [
+ "alloy-eip2930",
+ "alloy-eip7702",
+ "auto_impl",
+ "either",
+ "revm-database-interface",
+ "revm-primitives",
+ "revm-state",
+ "serde",
+]
+
+[[package]]
+name = "revm-database"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9456d5cb165fef91c8b538d0115de50059d1cf352d160a1396894eac017a2a34"
+dependencies = [
+ "alloy-eips",
+ "revm-bytecode",
+ "revm-database-interface",
+ "revm-primitives",
+ "revm-state",
+ "serde",
+]
+
+[[package]]
+name = "revm-database-interface"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eaeb608de31bfd0e64bf9b5b18ee70ac70094c8c045b28ae8ae8701608d17d34"
+dependencies = [
+ "auto_impl",
+ "revm-primitives",
+ "revm-state",
+ "serde",
+]
+
+[[package]]
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+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfeaecd909e6be655c36d21032ca932b347e60ec5849ee29e670d63aa97b6adb"
+dependencies = [
+ "auto_impl",
+ "revm-bytecode",
+ "revm-context",
+ "revm-context-interface",
+ "revm-database-interface",
+ "revm-interpreter",
+ "revm-precompile",
+ "revm-primitives",
+ "revm-state",
+ "serde",
+]
+
+[[package]]
+name = "revm-inspector"
+version = "6.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4de1c6cddc7d62364dc9fa2f405c2c4637c933c5591addf09977ec8a156e4b23"
+dependencies = [
+ "auto_impl",
+ "revm-context",
+ "revm-database-interface",
+ "revm-handler",
+ "revm-interpreter",
+ "revm-primitives",
+ "revm-state",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "revm-interpreter"
+version = "21.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7c3ca670eee335d9268a9100932ec1e09638bdd9b31eac9e22dec4de00f2cba"
+dependencies = [
+ "revm-bytecode",
+ "revm-context-interface",
+ "revm-primitives",
+ "serde",
+]
+
+[[package]]
+name = "revm-precompile"
+version = "22.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4330c6982a2ef1d318cb10ce7e726a64e11e44fe1eac29d055de849a5e1e080e"
+dependencies = [
+ "ark-bls12-381",
+ "ark-bn254",
+ "ark-ec",
+ "ark-ff 0.5.0",
+ "ark-serialize 0.5.0",
+ "aurora-engine-modexp",
+ "blst",
+ "c-kzg",
+ "cfg-if",
+ "k256",
+ "libsecp256k1",
+ "once_cell",
+ "p256",
+ "revm-primitives",
+ "ripemd",
+ "secp256k1",
+ "sha2 0.10.9",
+]
+
+[[package]]
+name = "revm-primitives"
+version = "19.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c1588093530ec4442461163be49c433c07a3235d1ca6f6799fef338dacc50d3"
+dependencies = [
+ "alloy-primitives",
+ "num_enum",
+ "serde",
+]
+
+[[package]]
+name = "revm-state"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44320ccf53067136a83cdbc54f4b7529e8f61497666f31d6f5cfd9035a1cc08f"
+dependencies = [
+ "bitflags",
+ "revm-bytecode",
+ "revm-primitives",
+ "serde",
+]
+
 [[package]]
 name = "rfc6979"
 version = "0.4.0"
@@ -2592,6 +3201,15 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "ripemd"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd124222d17ad93a644ed9d011a40f4fb64aa54275c08cc216524a9ea82fb09f"
+dependencies = [
+ "digest 0.10.7",
+]
+
 [[package]]
 name = "rlp"
 version = "0.5.2"
@@ -2841,6 +3459,7 @@ version = "1.0.140"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "20068b6e96dc6c9bd23e01df8827e6c7e1f2fddd43c21810382803c136b99373"
 dependencies = [
+ "indexmap 2.9.0",
  "itoa",
  "memchr",
  "ryu",
@@ -2899,6 +3518,19 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "sha2"
+version = "0.9.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d58a1e1bf39749807d89cf2d98ac2dfa0ff1cb3faa38fbb64dd88ac8013d800"
+dependencies = [
+ "block-buffer 0.9.0",
+ "cfg-if",
+ "cpufeatures",
+ "digest 0.9.0",
+ "opaque-debug",
+]
+
 [[package]]
 name = "sha2"
 version = "0.10.9"
@@ -2946,6 +3578,12 @@ dependencies = [
  "rand_core 0.6.4",
 ]
 
+[[package]]
+name = "siphasher"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "56199f7ddabf13fe5074ce809e7d3f42b42ae711800501b5b16ea82ad029c39d"
+
 [[package]]
 name = "slab"
 version = "0.4.9"
@@ -3335,6 +3973,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9d12581f227e93f094d3af2ae690a574abb8a2b9b7a96e7cfe9647b2b617678"
 dependencies = [
  "once_cell",
+ "valuable",
 ]
 
 [[package]]
@@ -3349,6 +3988,15 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tracing-subscriber"
+version = "0.2.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e0d2eaa99c3c2e41547cfa109e910a68ea03823cccad4a0525dcbc9b01e8c71"
+dependencies = [
+ "tracing-core",
+]
+
 [[package]]
 name = "try-lock"
 version = "0.2.5"
diff --git a/Cargo.toml b/Cargo.toml
index 78a29898..43cbcc71 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,3 +10,5 @@ homepage = "https://github.com/rainprotocol/rain.math.float"
 
 [workspace.dependencies]
 alloy = { version = "1.0.9", features = ["sol-types", "json", "json-abi"] }
+revm = "25.0.0"
+lazy_static = "1.5.0"
diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index c746eebc..d87298f4 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -5,3 +5,5 @@ edition.workspace = true
 
 [dependencies]
 alloy.workspace = true
+revm.workspace = true
+lazy_static.workspace = true
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
new file mode 100644
index 00000000..267e7ba2
--- /dev/null
+++ b/crates/float/src/lib.rs
@@ -0,0 +1,15 @@
+use alloy::{primitives::FixedBytes, sol};
+
+sol!(
+    #![sol(all_derives = true)]
+    DecimalFloat,
+    "../../out/DecimalFloat.sol/DecimalFloat.json"
+);
+
+use DecimalFloat::Float as SolFloat;
+
+pub struct Float(FixedBytes<32>);
+
+// impl Float {
+//     pub async fn new
+// }
diff --git a/crates/float/src/main.rs b/crates/float/src/main.rs
deleted file mode 100644
index e7a11a96..00000000
--- a/crates/float/src/main.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-fn main() {
-    println!("Hello, world!");
-}

From 22c181559285e55d6f63cac72407d077ef2ceb54 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Mon, 9 Jun 2025 14:59:47 +0400
Subject: [PATCH 06/28] set up db

---
 crates/float/src/lib.rs | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 267e7ba2..97d077a1 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -1,4 +1,7 @@
+use DecimalFloat::Float as SolFloat;
 use alloy::{primitives::FixedBytes, sol};
+use lazy_static::lazy_static;
+use revm::{database::InMemoryDB, primitives::address};
 
 sol!(
     #![sol(all_derives = true)]
@@ -6,7 +9,18 @@ sol!(
     "../../out/DecimalFloat.sol/DecimalFloat.json"
 );
 
-use DecimalFloat::Float as SolFloat;
+lazy_static! {
+    static ref DB: InMemoryDB = {
+        let mut db = InMemoryDB::default();
+        let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::BYTECODE.clone());
+        let account_info = revm::state::AccountInfo::default().with_code(bytecode);
+        db.insert_account_info(
+            address!("00000000000000000000000000000000000f10a2"),
+            account_info,
+        );
+        db
+    };
+}
 
 pub struct Float(FixedBytes<32>);
 

From ee2e1b3e526e0036ea93f5af71d3c174828906f7 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Mon, 9 Jun 2025 16:35:59 +0400
Subject: [PATCH 07/28] fn parse

---
 Cargo.lock              |  2 +-
 Cargo.toml              |  2 +-
 crates/float/Cargo.toml |  2 +-
 crates/float/src/lib.rs | 87 +++++++++++++++++++++++++++++++++--------
 4 files changed, 74 insertions(+), 19 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index f94fca1a..50b823e3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2877,8 +2877,8 @@ name = "rain-math-float"
 version = "0.1.0"
 dependencies = [
  "alloy",
- "lazy_static",
  "revm",
+ "thiserror",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 43cbcc71..26d11662 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,4 +11,4 @@ homepage = "https://github.com/rainprotocol/rain.math.float"
 [workspace.dependencies]
 alloy = { version = "1.0.9", features = ["sol-types", "json", "json-abi"] }
 revm = "25.0.0"
-lazy_static = "1.5.0"
+thiserror = "2.0.12"
diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index d87298f4..b27b0eda 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -6,4 +6,4 @@ edition.workspace = true
 [dependencies]
 alloy.workspace = true
 revm.workspace = true
-lazy_static.workspace = true
+thiserror.workspace = true
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 97d077a1..7aef7398 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -1,7 +1,14 @@
 use DecimalFloat::Float as SolFloat;
-use alloy::{primitives::FixedBytes, sol};
-use lazy_static::lazy_static;
-use revm::{database::InMemoryDB, primitives::address};
+use alloy::primitives::{Address, Bytes, FixedBytes};
+use alloy::sol_types::SolInterface;
+use alloy::{sol, sol_types::SolCall};
+use revm::context::result::{
+    EVMError, ExecutionResult, HaltReason, Output, ResultAndState, SuccessReason,
+};
+use revm::database::InMemoryDB;
+use revm::primitives::{address, fixed_bytes};
+use revm::{Context, MainBuilder, MainContext, SystemCallEvm};
+use thiserror::Error;
 
 sol!(
     #![sol(all_derives = true)]
@@ -9,21 +16,69 @@ sol!(
     "../../out/DecimalFloat.sol/DecimalFloat.json"
 );
 
-lazy_static! {
-    static ref DB: InMemoryDB = {
+const FLOAT_ADDRESS: Address = address!("00000000000000000000000000000000000f10a2");
+
+#[derive(Debug, Error)]
+pub enum FloatError {
+    #[error("EVM error: {0}")]
+    Evm(#[from] EVMError<std::convert::Infallible>),
+    #[error("Float execution reverted with output: {0}")]
+    Revert(Bytes),
+    #[error("Float execution halted with reason: {0:?}")]
+    Halt(HaltReason),
+    #[error("Execution ended for non-return reason. Reason: {0:?}. Output: {1:?}")]
+    UnexpectedSuccess(SuccessReason, Output),
+    #[error(transparent)]
+    AlloySolTypes(#[from] alloy::sol_types::Error),
+    #[error("Decimal Float error: {0:?}")]
+    DecimalFloat(DecimalFloat::DecimalFloatErrors),
+}
+
+pub struct Float(FixedBytes<32>);
+
+impl Float {
+    fn as_sol(&self) -> SolFloat {
+        let Float(bytes) = self;
+        SolFloat::from_underlying(*bytes)
+    }
+
+    pub fn parse(str: String) -> Result<Self, FloatError> {
         let mut db = InMemoryDB::default();
         let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::BYTECODE.clone());
         let account_info = revm::state::AccountInfo::default().with_code(bytecode);
-        db.insert_account_info(
-            address!("00000000000000000000000000000000000f10a2"),
-            account_info,
-        );
-        db
-    };
-}
+        db.insert_account_info(FLOAT_ADDRESS, account_info);
 
-pub struct Float(FixedBytes<32>);
+        let mut evm = Context::mainnet().with_db(db).build_mainnet();
+
+        let calldata = DecimalFloat::parseCall { str }.abi_encode();
+
+        let result_and_state =
+            evm.transact_system_call_finalize(FLOAT_ADDRESS, Bytes::from(calldata))?;
+
+        match result_and_state.result {
+            ExecutionResult::Success {
+                reason: SuccessReason::Return,
+                output: Output::Call(output),
+                ..
+            } => {
+                let decoded = DecimalFloat::parseCall::abi_decode_returns(output.as_ref())?;
 
-// impl Float {
-//     pub async fn new
-// }
+                let error_selector = decoded._0;
+                let parsed_float = decoded._1;
+
+                if error_selector != fixed_bytes!("00000000") {
+                    let decoded_err =
+                        DecimalFloat::DecimalFloatErrors::abi_decode(error_selector.as_slice())?;
+                    return Err(FloatError::DecimalFloat(decoded_err));
+                }
+
+                Ok(Float(parsed_float))
+            }
+            ExecutionResult::Success { reason, output, .. } => {
+                Err(FloatError::UnexpectedSuccess(reason, output))
+            }
+            ExecutionResult::Revert { output, .. } => Err(FloatError::Revert(output)),
+            ExecutionResult::Halt { reason, .. } => Err(FloatError::Halt(reason)),
+        }
+    }
+}

From f13d5bca2fff7cc16a1ad2f34885ffd5fcabbe36 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Mon, 9 Jun 2025 19:04:15 +0400
Subject: [PATCH 08/28] parse and format

---
 crates/float/src/lib.rs | 44 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 7aef7398..72faab2a 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -81,4 +81,48 @@ impl Float {
             ExecutionResult::Halt { reason, .. } => Err(FloatError::Halt(reason)),
         }
     }
+
+    pub fn format(self) -> Result<String, FloatError> {
+        let mut db = InMemoryDB::default();
+        let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::BYTECODE.clone());
+        let account_info = revm::state::AccountInfo::default().with_code(bytecode);
+        db.insert_account_info(FLOAT_ADDRESS, account_info);
+
+        let mut evm = Context::mainnet().with_db(db).build_mainnet();
+
+        let Float(a) = self;
+        let calldata = DecimalFloat::formatCall { a }.abi_encode();
+
+        let result_and_state =
+            evm.transact_system_call_finalize(FLOAT_ADDRESS, Bytes::from(calldata))?;
+
+        match result_and_state.result {
+            ExecutionResult::Success {
+                reason: SuccessReason::Return,
+                output: Output::Call(output),
+                ..
+            } => {
+                let decoded = DecimalFloat::formatCall::abi_decode_returns(output.as_ref())?;
+
+                Ok(decoded)
+            }
+            ExecutionResult::Success { reason, output, .. } => {
+                Err(FloatError::UnexpectedSuccess(reason, output))
+            }
+            ExecutionResult::Revert { output, .. } => Err(FloatError::Revert(output)),
+            ExecutionResult::Halt { reason, .. } => Err(FloatError::Halt(reason)),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_parse_and_float() {
+        let float = Float::parse("1.234567890".to_string()).unwrap();
+        let string = float.format().unwrap();
+        assert_eq!(string, "1.234567890");
+    }
 }

From b64c150f44d34e38ed705ad58ce2b3cd2af7daaa Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Mon, 9 Jun 2025 19:10:30 +0400
Subject: [PATCH 09/28] make tests pass

---
 crates/float/src/lib.rs | 39 +++++++++++++++++++++++++--------------
 1 file changed, 25 insertions(+), 14 deletions(-)

diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 72faab2a..6185a27c 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -5,7 +5,11 @@ use alloy::{sol, sol_types::SolCall};
 use revm::context::result::{
     EVMError, ExecutionResult, HaltReason, Output, ResultAndState, SuccessReason,
 };
+use revm::context::{BlockEnv, CfgEnv, Evm, TxEnv};
 use revm::database::InMemoryDB;
+use revm::handler::EthPrecompiles;
+use revm::handler::instructions::EthInstructions;
+use revm::interpreter::interpreter::EthInterpreter;
 use revm::primitives::{address, fixed_bytes};
 use revm::{Context, MainBuilder, MainContext, SystemCallEvm};
 use thiserror::Error;
@@ -19,7 +23,7 @@ sol!(
 const FLOAT_ADDRESS: Address = address!("00000000000000000000000000000000000f10a2");
 
 #[derive(Debug, Error)]
-pub enum FloatError {
+pub enum CalculatorError {
     #[error("EVM error: {0}")]
     Evm(#[from] EVMError<std::convert::Infallible>),
     #[error("Float execution reverted with output: {0}")]
@@ -34,6 +38,13 @@ pub enum FloatError {
     DecimalFloat(DecimalFloat::DecimalFloatErrors),
 }
 
+// type EvmContext = Context<BlockEnv, TxEnv, CfgEnv, InMemoryDB>;
+// struct Calculator(Evm<EvmContext, (), EthInstructions<EthInterpreter, EvmContext>, EthPrecompiles>);
+
+// impl Calculator {
+//     fn new() -> Result<Self, CalculatorError> {}
+// }
+
 pub struct Float(FixedBytes<32>);
 
 impl Float {
@@ -42,9 +53,9 @@ impl Float {
         SolFloat::from_underlying(*bytes)
     }
 
-    pub fn parse(str: String) -> Result<Self, FloatError> {
+    pub fn parse(str: String) -> Result<Self, CalculatorError> {
         let mut db = InMemoryDB::default();
-        let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::BYTECODE.clone());
+        let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::DEPLOYED_BYTECODE.clone());
         let account_info = revm::state::AccountInfo::default().with_code(bytecode);
         db.insert_account_info(FLOAT_ADDRESS, account_info);
 
@@ -69,22 +80,22 @@ impl Float {
                 if error_selector != fixed_bytes!("00000000") {
                     let decoded_err =
                         DecimalFloat::DecimalFloatErrors::abi_decode(error_selector.as_slice())?;
-                    return Err(FloatError::DecimalFloat(decoded_err));
+                    return Err(CalculatorError::DecimalFloat(decoded_err));
                 }
 
                 Ok(Float(parsed_float))
             }
             ExecutionResult::Success { reason, output, .. } => {
-                Err(FloatError::UnexpectedSuccess(reason, output))
+                Err(CalculatorError::UnexpectedSuccess(reason, output))
             }
-            ExecutionResult::Revert { output, .. } => Err(FloatError::Revert(output)),
-            ExecutionResult::Halt { reason, .. } => Err(FloatError::Halt(reason)),
+            ExecutionResult::Revert { output, .. } => Err(CalculatorError::Revert(output)),
+            ExecutionResult::Halt { reason, .. } => Err(CalculatorError::Halt(reason)),
         }
     }
 
-    pub fn format(self) -> Result<String, FloatError> {
+    pub fn format(self) -> Result<String, CalculatorError> {
         let mut db = InMemoryDB::default();
-        let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::BYTECODE.clone());
+        let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::DEPLOYED_BYTECODE.clone());
         let account_info = revm::state::AccountInfo::default().with_code(bytecode);
         db.insert_account_info(FLOAT_ADDRESS, account_info);
 
@@ -107,10 +118,10 @@ impl Float {
                 Ok(decoded)
             }
             ExecutionResult::Success { reason, output, .. } => {
-                Err(FloatError::UnexpectedSuccess(reason, output))
+                Err(CalculatorError::UnexpectedSuccess(reason, output))
             }
-            ExecutionResult::Revert { output, .. } => Err(FloatError::Revert(output)),
-            ExecutionResult::Halt { reason, .. } => Err(FloatError::Halt(reason)),
+            ExecutionResult::Revert { output, .. } => Err(CalculatorError::Revert(output)),
+            ExecutionResult::Halt { reason, .. } => Err(CalculatorError::Halt(reason)),
         }
     }
 }
@@ -121,8 +132,8 @@ mod tests {
 
     #[test]
     fn test_parse_and_float() {
-        let float = Float::parse("1.234567890".to_string()).unwrap();
+        let float = Float::parse("1.23456789".to_string()).unwrap();
         let string = float.format().unwrap();
-        assert_eq!(string, "1.234567890");
+        assert_eq!(string, "1.23456789");
     }
 }

From b897ac77074b31c04fcb4dca15b692fda9b6192f Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Mon, 9 Jun 2025 19:31:21 +0400
Subject: [PATCH 10/28] calculator

---
 crates/float/src/lib.rs | 45 +++++++++++++++++++----------------------
 1 file changed, 21 insertions(+), 24 deletions(-)

diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 6185a27c..4b987404 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -1,10 +1,7 @@
-use DecimalFloat::Float as SolFloat;
 use alloy::primitives::{Address, Bytes, FixedBytes};
 use alloy::sol_types::SolInterface;
 use alloy::{sol, sol_types::SolCall};
-use revm::context::result::{
-    EVMError, ExecutionResult, HaltReason, Output, ResultAndState, SuccessReason,
-};
+use revm::context::result::{EVMError, ExecutionResult, HaltReason, Output, SuccessReason};
 use revm::context::{BlockEnv, CfgEnv, Evm, TxEnv};
 use revm::database::InMemoryDB;
 use revm::handler::EthPrecompiles;
@@ -38,33 +35,31 @@ pub enum CalculatorError {
     DecimalFloat(DecimalFloat::DecimalFloatErrors),
 }
 
-// type EvmContext = Context<BlockEnv, TxEnv, CfgEnv, InMemoryDB>;
-// struct Calculator(Evm<EvmContext, (), EthInstructions<EthInterpreter, EvmContext>, EthPrecompiles>);
-
-// impl Calculator {
-//     fn new() -> Result<Self, CalculatorError> {}
-// }
+type EvmContext = Context<BlockEnv, TxEnv, CfgEnv, InMemoryDB>;
+pub struct Calculator {
+    evm: Evm<EvmContext, (), EthInstructions<EthInterpreter, EvmContext>, EthPrecompiles>,
+}
 
 pub struct Float(FixedBytes<32>);
 
-impl Float {
-    fn as_sol(&self) -> SolFloat {
-        let Float(bytes) = self;
-        SolFloat::from_underlying(*bytes)
-    }
-
-    pub fn parse(str: String) -> Result<Self, CalculatorError> {
+impl Calculator {
+    pub fn new() -> Result<Self, CalculatorError> {
         let mut db = InMemoryDB::default();
         let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::DEPLOYED_BYTECODE.clone());
         let account_info = revm::state::AccountInfo::default().with_code(bytecode);
         db.insert_account_info(FLOAT_ADDRESS, account_info);
 
-        let mut evm = Context::mainnet().with_db(db).build_mainnet();
+        let evm = Context::mainnet().with_db(db).build_mainnet();
 
+        Ok(Calculator { evm })
+    }
+
+    pub fn parse(&mut self, str: String) -> Result<Float, CalculatorError> {
         let calldata = DecimalFloat::parseCall { str }.abi_encode();
 
-        let result_and_state =
-            evm.transact_system_call_finalize(FLOAT_ADDRESS, Bytes::from(calldata))?;
+        let result_and_state = self
+            .evm
+            .transact_system_call_finalize(FLOAT_ADDRESS, Bytes::from(calldata))?;
 
         match result_and_state.result {
             ExecutionResult::Success {
@@ -93,7 +88,7 @@ impl Float {
         }
     }
 
-    pub fn format(self) -> Result<String, CalculatorError> {
+    pub fn format(&mut self, float: Float) -> Result<String, CalculatorError> {
         let mut db = InMemoryDB::default();
         let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::DEPLOYED_BYTECODE.clone());
         let account_info = revm::state::AccountInfo::default().with_code(bytecode);
@@ -101,7 +96,7 @@ impl Float {
 
         let mut evm = Context::mainnet().with_db(db).build_mainnet();
 
-        let Float(a) = self;
+        let Float(a) = float;
         let calldata = DecimalFloat::formatCall { a }.abi_encode();
 
         let result_and_state =
@@ -132,8 +127,10 @@ mod tests {
 
     #[test]
     fn test_parse_and_float() {
-        let float = Float::parse("1.23456789".to_string()).unwrap();
-        let string = float.format().unwrap();
+        let mut calculator = Calculator::new().unwrap();
+
+        let float = calculator.parse("1.23456789".to_string()).unwrap();
+        let string = calculator.format(float).unwrap();
         assert_eq!(string, "1.23456789");
     }
 }

From 71b2dd68ec5b6376c2d912a03b774631cab5eacd Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Mon, 9 Jun 2025 19:49:20 +0400
Subject: [PATCH 11/28] refactor duplicated code with execute_call

---
 crates/float/src/lib.rs | 75 ++++++++++++++++++-----------------------
 1 file changed, 32 insertions(+), 43 deletions(-)

diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 4b987404..c3ed1a83 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -54,32 +54,24 @@ impl Calculator {
         Ok(Calculator { evm })
     }
 
-    pub fn parse(&mut self, str: String) -> Result<Float, CalculatorError> {
-        let calldata = DecimalFloat::parseCall { str }.abi_encode();
-
+    fn execute_call<F, T>(
+        &mut self,
+        calldata: Bytes,
+        process_output: F,
+    ) -> Result<T, CalculatorError>
+    where
+        F: FnOnce(Bytes) -> Result<T, CalculatorError>,
+    {
         let result_and_state = self
             .evm
-            .transact_system_call_finalize(FLOAT_ADDRESS, Bytes::from(calldata))?;
+            .transact_system_call_finalize(FLOAT_ADDRESS, calldata)?;
 
         match result_and_state.result {
             ExecutionResult::Success {
                 reason: SuccessReason::Return,
                 output: Output::Call(output),
                 ..
-            } => {
-                let decoded = DecimalFloat::parseCall::abi_decode_returns(output.as_ref())?;
-
-                let error_selector = decoded._0;
-                let parsed_float = decoded._1;
-
-                if error_selector != fixed_bytes!("00000000") {
-                    let decoded_err =
-                        DecimalFloat::DecimalFloatErrors::abi_decode(error_selector.as_slice())?;
-                    return Err(CalculatorError::DecimalFloat(decoded_err));
-                }
-
-                Ok(Float(parsed_float))
-            }
+            } => process_output(output),
             ExecutionResult::Success { reason, output, .. } => {
                 Err(CalculatorError::UnexpectedSuccess(reason, output))
             }
@@ -88,36 +80,33 @@ impl Calculator {
         }
     }
 
-    pub fn format(&mut self, float: Float) -> Result<String, CalculatorError> {
-        let mut db = InMemoryDB::default();
-        let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::DEPLOYED_BYTECODE.clone());
-        let account_info = revm::state::AccountInfo::default().with_code(bytecode);
-        db.insert_account_info(FLOAT_ADDRESS, account_info);
+    pub fn parse(&mut self, str: String) -> Result<Float, CalculatorError> {
+        let calldata = DecimalFloat::parseCall { str }.abi_encode();
 
-        let mut evm = Context::mainnet().with_db(db).build_mainnet();
+        self.execute_call(Bytes::from(calldata), |output| {
+            let DecimalFloat::parseReturn {
+                _0: error_selector,
+                _1: parsed_float,
+            } = DecimalFloat::parseCall::abi_decode_returns(output.as_ref())?;
 
-        let Float(a) = float;
-        let calldata = DecimalFloat::formatCall { a }.abi_encode();
+            if error_selector != fixed_bytes!("00000000") {
+                let decoded_err =
+                    DecimalFloat::DecimalFloatErrors::abi_decode(error_selector.as_slice())?;
+                return Err(CalculatorError::DecimalFloat(decoded_err));
+            }
 
-        let result_and_state =
-            evm.transact_system_call_finalize(FLOAT_ADDRESS, Bytes::from(calldata))?;
+            Ok(Float(parsed_float))
+        })
+    }
 
-        match result_and_state.result {
-            ExecutionResult::Success {
-                reason: SuccessReason::Return,
-                output: Output::Call(output),
-                ..
-            } => {
-                let decoded = DecimalFloat::formatCall::abi_decode_returns(output.as_ref())?;
+    pub fn format(&mut self, float: Float) -> Result<String, CalculatorError> {
+        let Float(a) = float;
+        let calldata = DecimalFloat::formatCall { a }.abi_encode();
 
-                Ok(decoded)
-            }
-            ExecutionResult::Success { reason, output, .. } => {
-                Err(CalculatorError::UnexpectedSuccess(reason, output))
-            }
-            ExecutionResult::Revert { output, .. } => Err(CalculatorError::Revert(output)),
-            ExecutionResult::Halt { reason, .. } => Err(CalculatorError::Halt(reason)),
-        }
+        self.execute_call(Bytes::from(calldata), |output| {
+            let decoded = DecimalFloat::formatCall::abi_decode_returns(output.as_ref())?;
+            Ok(decoded)
+        })
     }
 }
 

From 1db9614a6586556ecec0bb6744a44d791f8c2abb Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Tue, 10 Jun 2025 11:53:42 +0400
Subject: [PATCH 12/28] proptest

---
 .cargo/config.toml          |  3 +++
 Cargo.lock                  |  5 +++--
 Cargo.toml                  |  1 +
 crates/float/Cargo.toml     |  3 +++
 crates/float/src/lib.rs     | 39 +++++++++++++++++++++++++++++++++++++
 src/lib/LibDecimalFloat.sol |  2 +-
 6 files changed, 50 insertions(+), 3 deletions(-)
 create mode 100644 .cargo/config.toml

diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 00000000..0c6c27f8
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,3 @@
+[target.wasm32-unknown-unknown]
+# Required to make the rand feature of alloy work for wasm32-unknown-unknown
+rustflags = ["--cfg", "getrandom_backend=\"wasm_js\""]
diff --git a/Cargo.lock b/Cargo.lock
index 50b823e3..1962a613 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -59,9 +59,9 @@ dependencies = [
 
 [[package]]
 name = "alloy-chains"
-version = "0.2.3"
+version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6967ca1ed656766e471bc323da42fb0db320ca5e1418b408650e98e4757b3d2"
+checksum = "19a9cc9d81ace3da457883b0bdf76776e55f1b84219a9e9d55c27ad308548d3f"
 dependencies = [
  "alloy-primitives",
  "num_enum",
@@ -2877,6 +2877,7 @@ name = "rain-math-float"
 version = "0.1.0"
 dependencies = [
  "alloy",
+ "proptest",
  "revm",
  "thiserror",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 26d11662..bc66d622 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,3 +12,4 @@ homepage = "https://github.com/rainprotocol/rain.math.float"
 alloy = { version = "1.0.9", features = ["sol-types", "json", "json-abi"] }
 revm = "25.0.0"
 thiserror = "2.0.12"
+proptest = "1.7.0"
diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index b27b0eda..434dc18f 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -7,3 +7,6 @@ edition.workspace = true
 alloy.workspace = true
 revm.workspace = true
 thiserror.workspace = true
+
+[dev-dependencies]
+proptest.workspace = true
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index c3ed1a83..54dcf26b 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -9,6 +9,7 @@ use revm::handler::instructions::EthInstructions;
 use revm::interpreter::interpreter::EthInterpreter;
 use revm::primitives::{address, fixed_bytes};
 use revm::{Context, MainBuilder, MainContext, SystemCallEvm};
+use std::fmt;
 use thiserror::Error;
 
 sol!(
@@ -40,8 +41,15 @@ pub struct Calculator {
     evm: Evm<EvmContext, (), EthInstructions<EthInterpreter, EvmContext>, EthPrecompiles>,
 }
 
+#[derive(Copy, Clone)]
 pub struct Float(FixedBytes<32>);
 
+impl fmt::Debug for Float {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_tuple("Float").field(&self.0).finish()
+    }
+}
+
 impl Calculator {
     pub fn new() -> Result<Self, CalculatorError> {
         let mut db = InMemoryDB::default();
@@ -113,6 +121,26 @@ impl Calculator {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use proptest::prelude::*;
+
+    prop_compose! {
+        fn valid_float()(
+            int_part in -1_000_000_000_000_000_000_i128..1_000_000_000_000_000_000_i128,
+            decimal_places in 0u8..18u8,
+            decimal_part in 0u64..1_000_000_000_000_000_000u64
+        ) -> Float {
+            let mut calculator = Calculator::new().unwrap();
+
+            let num_str = if decimal_places == 0 {
+                format!("{int_part}")
+            } else {
+                let decimal_str = format!("{decimal_part:0width$}", width = decimal_places as usize);
+                format!("{int_part}.{decimal_str}")
+            };
+
+            calculator.parse(num_str).unwrap()
+        }
+    }
 
     #[test]
     fn test_parse_and_float() {
@@ -122,4 +150,15 @@ mod tests {
         let string = calculator.format(float).unwrap();
         assert_eq!(string, "1.23456789");
     }
+
+    proptest! {
+        #[test]
+        fn test_parse_format_property(float in valid_float()) {
+            let mut calculator = Calculator::new().unwrap();
+
+            let formatted = calculator.format(float.clone()).unwrap();
+            let parsed = calculator.parse(formatted.clone()).unwrap();
+            prop_assert_eq!(float.0, parsed.0);
+        }
+    }
 }
diff --git a/src/lib/LibDecimalFloat.sol b/src/lib/LibDecimalFloat.sol
index 69e4f22b..c3cdb7b5 100644
--- a/src/lib/LibDecimalFloat.sol
+++ b/src/lib/LibDecimalFloat.sol
@@ -71,7 +71,7 @@ int256 constant EXPONENT_LEAP_MULTIPLIER = int256(uint256(10 ** uint256(EXPONENT
 /// One use case for this number system is representing ratios of tokens that
 /// have both large differences in their decimals and unit value. For example,
 /// at the time of writing, 1 SHIB is worth about 2.7e-10 BTC while the
-/// WTBC contract only supports 8 decimals vs. SHIB's 18 decimals. It's literally
+/// WBTC contract only supports 8 decimals vs. SHIB's 18 decimals. It's literally
 /// not possible to represent a purchase of 1 SHIB (1e18) worth of WBTC, so it's
 /// easy to see how a fixed point decimal system could accidentally round
 /// something down to `0` or up to `1` or similarly bad precision loss, simply

From ef69abed6dc833791dbee0786fe0cb368a9c8a58 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Tue, 10 Jun 2025 13:04:09 +0400
Subject: [PATCH 13/28] add & sub

---
 crates/float/proptest-regressions/lib.txt |  7 +++
 crates/float/src/lib.rs                   | 59 +++++++++++++++++++++--
 2 files changed, 63 insertions(+), 3 deletions(-)
 create mode 100644 crates/float/proptest-regressions/lib.txt

diff --git a/crates/float/proptest-regressions/lib.txt b/crates/float/proptest-regressions/lib.txt
new file mode 100644
index 00000000..70d20bf9
--- /dev/null
+++ b/crates/float/proptest-regressions/lib.txt
@@ -0,0 +1,7 @@
+# Seeds for failure cases proptest has generated in the past. It is
+# automatically read and these particular cases re-run before any
+# novel cases are generated.
+#
+# It is recommended to check this file in to source control so that
+# everyone who runs the test benefits from these saved cases.
+cc 664cbb4a3416dcc12fe1196bdf33bdf3f9e1403c6446f0516dc704da23be5723 # shrinks to a = Float(0x0000000000000000000000000000000000000000000000000000000000000000), b = Float(0xffffffff00000000000000000000000000000000000000000000000000000001)
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 54dcf26b..62419433 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -41,7 +41,7 @@ pub struct Calculator {
     evm: Evm<EvmContext, (), EthInstructions<EthInterpreter, EvmContext>, EthPrecompiles>,
 }
 
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, PartialEq)]
 pub struct Float(FixedBytes<32>);
 
 impl fmt::Debug for Float {
@@ -116,6 +116,28 @@ impl Calculator {
             Ok(decoded)
         })
     }
+
+    pub fn add(&mut self, a: Float, b: Float) -> Result<Float, CalculatorError> {
+        let Float(a) = a;
+        let Float(b) = b;
+        let calldata = DecimalFloat::addCall { a, b }.abi_encode();
+
+        self.execute_call(Bytes::from(calldata), |output| {
+            let decoded = DecimalFloat::addCall::abi_decode_returns(output.as_ref())?;
+            Ok(Float(decoded))
+        })
+    }
+
+    pub fn sub(&mut self, a: Float, b: Float) -> Result<Float, CalculatorError> {
+        let Float(a) = a;
+        let Float(b) = b;
+        let calldata = DecimalFloat::subCall { a, b }.abi_encode();
+
+        self.execute_call(Bytes::from(calldata), |output| {
+            let decoded = DecimalFloat::subCall::abi_decode_returns(output.as_ref())?;
+            Ok(Float(decoded))
+        })
+    }
 }
 
 #[cfg(test)]
@@ -143,7 +165,7 @@ mod tests {
     }
 
     #[test]
-    fn test_parse_and_float() {
+    fn test_parse_and_format() {
         let mut calculator = Calculator::new().unwrap();
 
         let float = calculator.parse("1.23456789".to_string()).unwrap();
@@ -153,7 +175,7 @@ mod tests {
 
     proptest! {
         #[test]
-        fn test_parse_format_property(float in valid_float()) {
+        fn test_parse_format(float in valid_float()) {
             let mut calculator = Calculator::new().unwrap();
 
             let formatted = calculator.format(float.clone()).unwrap();
@@ -161,4 +183,35 @@ mod tests {
             prop_assert_eq!(float.0, parsed.0);
         }
     }
+
+    proptest! {
+        #[test]
+        fn test_add(a in valid_float(), b in valid_float()) {
+            let mut calculator = Calculator::new().unwrap();
+
+            calculator.add(a.clone(), b.clone()).unwrap();
+        }
+
+        #[test]
+        fn test_sub(a in valid_float(), b in valid_float()) {
+            let mut calculator = Calculator::new().unwrap();
+
+            calculator.sub(a.clone(), b.clone()).unwrap();
+        }
+
+        #[test]
+        fn test_add_sub(a in valid_float(), b in valid_float()) {
+            let mut calculator = Calculator::new().unwrap();
+
+            let sum = calculator.add(a.clone(), b.clone()).unwrap();
+            let diff = calculator.sub(sum, b.clone()).unwrap();
+            prop_assert_eq!(
+                calculator.format(a).unwrap(),
+                calculator.format(diff).unwrap(),
+                "a: {}, b: {}",
+                calculator.format(a).unwrap(),
+                calculator.format(b).unwrap(),
+            );
+        }
+    }
 }

From 7058f38ee3a8b259fece3118a3d1292a86e04df2 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Tue, 10 Jun 2025 13:07:10 +0400
Subject: [PATCH 14/28] decode revert

---
 crates/float/src/lib.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 62419433..a1bca313 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -83,7 +83,13 @@ impl Calculator {
             ExecutionResult::Success { reason, output, .. } => {
                 Err(CalculatorError::UnexpectedSuccess(reason, output))
             }
-            ExecutionResult::Revert { output, .. } => Err(CalculatorError::Revert(output)),
+            ExecutionResult::Revert { output, .. } => {
+                if let Ok(error) = DecimalFloat::DecimalFloatErrors::abi_decode(output.as_ref()) {
+                    return Err(CalculatorError::DecimalFloat(error));
+                }
+
+                Err(CalculatorError::Revert(output))
+            }
             ExecutionResult::Halt { reason, .. } => Err(CalculatorError::Halt(reason)),
         }
     }
@@ -98,6 +104,7 @@ impl Calculator {
             } = DecimalFloat::parseCall::abi_decode_returns(output.as_ref())?;
 
             if error_selector != fixed_bytes!("00000000") {
+                // TODO: trying to decode selector as error is incorrect. this needs fixing
                 let decoded_err =
                     DecimalFloat::DecimalFloatErrors::abi_decode(error_selector.as_slice())?;
                 return Err(CalculatorError::DecimalFloat(decoded_err));

From 6097c4315b0d5e1f96f8c6b3ea020bf67e611512 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Wed, 11 Jun 2025 12:27:39 +0400
Subject: [PATCH 15/28] test edge cases

---
 Cargo.lock              | 110 +++++++++++++++++++++-------------------
 Cargo.toml              |   2 +-
 crates/float/Cargo.toml |   3 ++
 crates/float/src/lib.rs |  89 ++++++++++++++++++++++++++++----
 4 files changed, 141 insertions(+), 63 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 1962a613..da0999ec 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -13,9 +13,9 @@ dependencies = [
 
 [[package]]
 name = "adler2"
-version = "2.0.0"
+version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "512761e0bb2578dd7380c6baaa0f4ce03e84f95e960231d1dec8bf4d7d6e2627"
+checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
 
 [[package]]
 name = "ahash"
@@ -46,6 +46,7 @@ dependencies = [
  "alloy-core",
  "alloy-eips",
  "alloy-genesis",
+ "alloy-json-rpc",
  "alloy-network",
  "alloy-provider",
  "alloy-rpc-client",
@@ -376,7 +377,7 @@ checksum = "64b728d511962dda67c1bc7ea7c03736ec275ed2cf4c35d9585298ac9ccf3b73"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -500,7 +501,7 @@ dependencies = [
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -517,7 +518,7 @@ dependencies = [
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
  "syn-solidity",
  "tiny-keccak",
 ]
@@ -536,7 +537,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde_json",
- "syn 2.0.101",
+ "syn 2.0.102",
  "syn-solidity",
 ]
 
@@ -761,7 +762,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "62945a2f7e6de02a31fe400aa489f0e0f5b2502e69f95f853adb82a96c7a6b60"
 dependencies = [
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -799,7 +800,7 @@ dependencies = [
  "num-traits",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -888,7 +889,7 @@ checksum = "213888f660fddcca0d257e88e54ac05bca01885f258ccdf695bafd77031bb69d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -955,7 +956,7 @@ checksum = "c7c24de15d275a1ecfd47a380fb4d5ec9bfe0933f309ed5e705b775596a3574d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -966,7 +967,7 @@ checksum = "e539d3fca749fcee5236ab05e93a52867dd549cc157c8cb7f99595f3cedffdb5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -987,7 +988,7 @@ checksum = "ffdcb70bdbc4d478427380519163274ac86e52916e10f0a8889adf0f96d3fee7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -1165,9 +1166,9 @@ dependencies = [
 
 [[package]]
 name = "cfg-if"
-version = "1.0.0"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+checksum = "9555578bc9e57714c812a1f84e4fc5b4d21fcb063490c624de019f7464c91268"
 
 [[package]]
 name = "chrono"
@@ -1316,7 +1317,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -1327,7 +1328,7 @@ checksum = "fc34b93ccb385b40dc71c6fceac4b2ad23662c7eeb248cf10d529b7e055b6ead"
 dependencies = [
  "darling_core",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -1383,7 +1384,7 @@ checksum = "e73f2692d4bd3cac41dca28934a39894200c9fabf49586d77d0e5954af1d7902"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -1403,7 +1404,7 @@ checksum = "bda628edc44c4bb645fbe0f758797143e4e07926f7ebf4e9bdfbd3d2ce621df3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
  "unicode-xid",
 ]
 
@@ -1436,7 +1437,7 @@ checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -1469,7 +1470,7 @@ dependencies = [
  "enum-ordinalize",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -1518,7 +1519,7 @@ checksum = "0d28318a75d4aead5c4db25382e8ef717932d0346600cacae6357eb5941bc5ff"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -1685,7 +1686,7 @@ checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -1742,8 +1743,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "335ff9f135e4384c8150d6f27c6daed433577f86b4750418338c01a1a2528592"
 dependencies = [
  "cfg-if",
+ "js-sys",
  "libc",
  "wasi 0.11.0+wasi-snapshot-preview1",
+ "wasm-bindgen",
 ]
 
 [[package]]
@@ -2097,7 +2100,7 @@ checksum = "a0eb5a3343abf848c0984fe4604b2b105da9539376e24fc0a3b0007411ae4fd9"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -2323,7 +2326,7 @@ checksum = "1b27834086c65ec3f9387b096d66e99f221cf081c2b738042aa252bcd41204e3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -2340,9 +2343,9 @@ checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
 
 [[package]]
 name = "miniz_oxide"
-version = "0.8.8"
+version = "0.8.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3be647b768db090acb35d5ec5db2b0e1f1de11133ca123b9eacf5137868f892a"
+checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
 dependencies = [
  "adler2",
 ]
@@ -2483,7 +2486,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -2543,7 +2546,7 @@ checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -2601,7 +2604,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -2681,7 +2684,7 @@ dependencies = [
  "phf_shared",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -2710,7 +2713,7 @@ checksum = "6e918e4ff8c4549eb882f14b3a4bc8c8bc93de829416eacf579f1207a8fbf861"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -2813,7 +2816,7 @@ dependencies = [
  "proc-macro-error-attr2",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -2877,6 +2880,7 @@ name = "rain-math-float"
 version = "0.1.0"
 dependencies = [
  "alloy",
+ "getrandom 0.2.16",
  "proptest",
  "revm",
  "thiserror",
@@ -3256,9 +3260,9 @@ checksum = "48fd7bd8a6377e15ad9d42a8ec25371b94ddc67abe7c8b9127bec79bebaaae18"
 
 [[package]]
 name = "rustc-demangle"
-version = "0.1.24"
+version = "0.1.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "719b953e2095829ee67db738b3bfa9fa368c94900df327b3f07fe6e794d2fe1f"
+checksum = "989e6739f80c4ad5b13e0fd7fe89531180375b18520cc8c82080e4dc4035b84f"
 
 [[package]]
 name = "rustc-hash"
@@ -3451,7 +3455,7 @@ checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -3506,7 +3510,7 @@ dependencies = [
  "darling",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -3660,7 +3664,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustversion",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -3682,9 +3686,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.101"
+version = "2.0.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ce2b7fc941b3a24138a0a7cf8e858bfc6a992e7978a068a5c760deb0ed43caf"
+checksum = "f6397daf94fa90f058bd0fd88429dd9e5738999cca8d701813c80723add80462"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3700,7 +3704,7 @@ dependencies = [
  "paste",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -3720,7 +3724,7 @@ checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -3759,7 +3763,7 @@ checksum = "7f7cf42b4507d8ea322120659672cf1b9dbb93f8f2d4ecfd6e51350ff5b17a1d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -3845,7 +3849,7 @@ checksum = "6e06d43f1345a3bcd39f6a56dbb7dcab2ba47e68e8ac134855e7e2bdbaf8cab8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -3964,7 +3968,7 @@ checksum = "1b1ffbcf9c6f6b99d386e7444eb608ba646ae452a36b39737deb9663b610f662"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -4136,7 +4140,7 @@ dependencies = [
  "log",
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
  "wasm-bindgen-shared",
 ]
 
@@ -4171,7 +4175,7 @@ checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -4230,7 +4234,7 @@ checksum = "a47fddd13af08290e67f4acabf4b459f647552718f683a7b415d290ac744a836"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -4241,7 +4245,7 @@ checksum = "bd9211b69f8dcdfa817bfd14bf1c97c9188afa36f4750130fcdf3f400eca9fa8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -4403,7 +4407,7 @@ checksum = "38da3c9736e16c5d3c8c597a9aaa5d1fa565d0532ae05e27c24aa62fb32c0ab6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
  "synstructure",
 ]
 
@@ -4424,7 +4428,7 @@ checksum = "28a6e20d751156648aa063f3800b706ee209a32c0b4d9f24be3d980b01be55ef"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -4444,7 +4448,7 @@ checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
  "synstructure",
 ]
 
@@ -4465,7 +4469,7 @@ checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
 
 [[package]]
@@ -4498,5 +4502,5 @@ checksum = "5b96237efa0c878c64bd89c436f661be4e46b2f3eff1ebb976f7ef2321d2f58f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.101",
+ "syn 2.0.102",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index bc66d622..48eb7988 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ license = "CAL-1.0"
 homepage = "https://github.com/rainprotocol/rain.math.float"
 
 [workspace.dependencies]
-alloy = { version = "1.0.9", features = ["sol-types", "json", "json-abi"] }
+alloy = { version = "1.0.9", features = ["sol-types", "json-rpc"] }
 revm = "25.0.0"
 thiserror = "2.0.12"
 proptest = "1.7.0"
diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index 434dc18f..fe1ad3eb 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -8,5 +8,8 @@ alloy.workspace = true
 revm.workspace = true
 thiserror.workspace = true
 
+[target.'cfg(target_family = "wasm")'.dependencies]
+getrandom = { version = "0.2.11", features = ["js", "js-sys"] }
+
 [dev-dependencies]
 proptest.workspace = true
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index a1bca313..c655f006 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -18,6 +18,8 @@ sol!(
     "../../out/DecimalFloat.sol/DecimalFloat.json"
 );
 
+use DecimalFloat::DecimalFloatErrors;
+
 const FLOAT_ADDRESS: Address = address!("00000000000000000000000000000000000f10a2");
 
 #[derive(Debug, Error)]
@@ -33,7 +35,20 @@ pub enum CalculatorError {
     #[error(transparent)]
     AlloySolTypes(#[from] alloy::sol_types::Error),
     #[error("Decimal Float error: {0:?}")]
-    DecimalFloat(DecimalFloat::DecimalFloatErrors),
+    DecimalFloat(DecimalFloatErrors),
+    #[error("Decimal Float error selector: {0:?}")]
+    DecimalFloatSelector(Result<DecimalFloatErrorSelector, FixedBytes<4>>),
+}
+
+#[derive(Debug)]
+pub enum DecimalFloatErrorSelector {
+    CoefficientOverflow,
+    ExponentOverflow,
+    Log10Negative,
+    Log10Zero,
+    LossyConversionFromFloat,
+    NegativeFixedDecimalConversion,
+    WithTargetExponentOverflow,
 }
 
 type EvmContext = Context<BlockEnv, TxEnv, CfgEnv, InMemoryDB>;
@@ -104,10 +119,33 @@ impl Calculator {
             } = DecimalFloat::parseCall::abi_decode_returns(output.as_ref())?;
 
             if error_selector != fixed_bytes!("00000000") {
-                // TODO: trying to decode selector as error is incorrect. this needs fixing
-                let decoded_err =
-                    DecimalFloat::DecimalFloatErrors::abi_decode(error_selector.as_slice())?;
-                return Err(CalculatorError::DecimalFloat(decoded_err));
+                let FixedBytes(bytes) = error_selector;
+                let selector = match bytes {
+                    <DecimalFloat::CoefficientOverflow as alloy::sol_types::SolError>::SELECTOR => {
+                        Ok(DecimalFloatErrorSelector::CoefficientOverflow)
+                    }
+                    <DecimalFloat::ExponentOverflow as alloy::sol_types::SolError>::SELECTOR => {
+                        Ok(DecimalFloatErrorSelector::ExponentOverflow)
+                    }
+                    <DecimalFloat::Log10Negative as alloy::sol_types::SolError>::SELECTOR => {
+                        Ok(DecimalFloatErrorSelector::Log10Negative)
+                    }
+                    <DecimalFloat::Log10Zero as alloy::sol_types::SolError>::SELECTOR => {
+                        Ok(DecimalFloatErrorSelector::Log10Zero)
+                    }
+                    <DecimalFloat::LossyConversionFromFloat as alloy::sol_types::SolError>::SELECTOR => {
+                        Ok(DecimalFloatErrorSelector::LossyConversionFromFloat)
+                    }
+                    <DecimalFloat::NegativeFixedDecimalConversion as alloy::sol_types::SolError>::SELECTOR => {
+                        Ok(DecimalFloatErrorSelector::NegativeFixedDecimalConversion)
+                    }
+                    <DecimalFloat::WithTargetExponentOverflow as alloy::sol_types::SolError>::SELECTOR => {
+                        Ok(DecimalFloatErrorSelector::WithTargetExponentOverflow)
+                    }
+                    _ => Err(FixedBytes(bytes)),
+                };
+
+                return Err(CalculatorError::DecimalFloatSelector(selector));
             }
 
             Ok(Float(parsed_float))
@@ -154,9 +192,9 @@ mod tests {
 
     prop_compose! {
         fn valid_float()(
-            int_part in -1_000_000_000_000_000_000_i128..1_000_000_000_000_000_000_i128,
+            int_part in -10i128.pow(18)..10i128.pow(18),
             decimal_places in 0u8..18u8,
-            decimal_part in 0u64..1_000_000_000_000_000_000u64
+            decimal_part in 0u128..10u128.pow(18u32)
         ) -> Float {
             let mut calculator = Calculator::new().unwrap();
 
@@ -175,9 +213,42 @@ mod tests {
     fn test_parse_and_format() {
         let mut calculator = Calculator::new().unwrap();
 
-        let float = calculator.parse("1.23456789".to_string()).unwrap();
+        let float = calculator
+            .parse("1.1341234234625468391".to_string())
+            .unwrap();
+        // NOTE: LibFormatDecimalFloat.toDecimalString currently uses 18 decimal places
+        let err = calculator.format(float).unwrap_err();
+
+        assert!(matches!(
+            err,
+            CalculatorError::DecimalFloat(DecimalFloatErrors::LossyConversionFromFloat(_))
+        ));
+    }
+
+    #[test]
+    fn test_parse_edge_cases() {
+        let mut calculator = Calculator::new().unwrap();
+
+        // NOTE: I'm not sure if this is supposed to give an error
+        let float = calculator.parse("1.2.3".to_string()).unwrap();
         let string = calculator.format(float).unwrap();
-        assert_eq!(string, "1.23456789");
+        assert_eq!(string, "1.2");
+
+        let err = calculator.parse("abc".to_string()).unwrap_err();
+        assert!(matches!(
+            err,
+            CalculatorError::DecimalFloatSelector(Err(selector))
+            if selector == fixed_bytes!("34bd2069")
+        ));
+
+        // NOTE: I'd expect this (over quintillion and 19 decimals) to produce an error but it doesn't
+
+        // let float = calculator
+        //     .parse("1341234234625468391.1341234234625468391".to_string())
+        //     .unwrap_err();
+
+        // The value produced (broken down into first 224 and last 32 bits):
+        // 0xffffffed0000000000000000000000000a171f8863f1dca211b12be4 0xebc9a7e7
     }
 
     proptest! {

From 587ef3ef7bd5f607c38f9ba73e95d56a721812c2 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Wed, 11 Jun 2025 12:34:35 +0400
Subject: [PATCH 16/28] add rainix-sol-prelude step

---
 .github/workflows/rainix.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/rainix.yaml b/.github/workflows/rainix.yaml
index 4e8a053b..4bcecb14 100644
--- a/.github/workflows/rainix.yaml
+++ b/.github/workflows/rainix.yaml
@@ -36,6 +36,8 @@ jobs:
           restore-prefixes-first-match: nix-${{ runner.os }}-
           gc-max-store-size-linux: 1G
 
+      - run: nix develop -c rainix-sol-prelude
+
       - name: Run ${{ matrix.task }}
         env:
           ETH_RPC_URL: ${{ secrets.CI_DEPLOY_SEPOLIA_RPC_URL || vars.CI_DEPLOY_SEPOLIA_RPC_URL }}

From 507419aa1e8e8f289ba9a14c89a3bfad9dc88467 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Wed, 11 Jun 2025 12:48:53 +0400
Subject: [PATCH 17/28] make clippy happy

---
 crates/float/src/lib.rs | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index c655f006..9c0ee6ee 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -256,7 +256,7 @@ mod tests {
         fn test_parse_format(float in valid_float()) {
             let mut calculator = Calculator::new().unwrap();
 
-            let formatted = calculator.format(float.clone()).unwrap();
+            let formatted = calculator.format(float).unwrap();
             let parsed = calculator.parse(formatted.clone()).unwrap();
             prop_assert_eq!(float.0, parsed.0);
         }
@@ -267,22 +267,22 @@ mod tests {
         fn test_add(a in valid_float(), b in valid_float()) {
             let mut calculator = Calculator::new().unwrap();
 
-            calculator.add(a.clone(), b.clone()).unwrap();
+            calculator.add(a, b).unwrap();
         }
 
         #[test]
         fn test_sub(a in valid_float(), b in valid_float()) {
             let mut calculator = Calculator::new().unwrap();
 
-            calculator.sub(a.clone(), b.clone()).unwrap();
+            calculator.sub(a, b).unwrap();
         }
 
         #[test]
         fn test_add_sub(a in valid_float(), b in valid_float()) {
             let mut calculator = Calculator::new().unwrap();
 
-            let sum = calculator.add(a.clone(), b.clone()).unwrap();
-            let diff = calculator.sub(sum, b.clone()).unwrap();
+            let sum = calculator.add(a, b).unwrap();
+            let diff = calculator.sub(sum, b).unwrap();
             prop_assert_eq!(
                 calculator.format(a).unwrap(),
                 calculator.format(diff).unwrap(),

From 0dcf889c019d47bced6428bd12fcf4bb48ef24fc Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Wed, 11 Jun 2025 13:08:56 +0400
Subject: [PATCH 18/28] address ai feedback

---
 crates/float/Cargo.toml | 2 ++
 crates/float/src/lib.rs | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index fe1ad3eb..6a414ea1 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -2,6 +2,8 @@
 name = "rain-math-float"
 version.workspace = true
 edition.workspace = true
+license.workspace = true
+homepage.workspace = true
 
 [dependencies]
 alloy.workspace = true
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 9c0ee6ee..a2350e18 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -20,6 +20,8 @@ sol!(
 
 use DecimalFloat::DecimalFloatErrors;
 
+/// Fixed address where the DecimalFloat contract is deployed in the in-memory EVM.
+/// This arbitrary address is used consistently across all Calculator instances.
 const FLOAT_ADDRESS: Address = address!("00000000000000000000000000000000000f10a2");
 
 #[derive(Debug, Error)]

From d8a7a02f5cfbd38695eab6ae20c4e615611d13bc Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Wed, 11 Jun 2025 14:06:55 +0400
Subject: [PATCH 19/28] make wasm builds work and update ci

---
 .cargo/config.toml            |   3 -
 .github/workflows/rainix.yaml |  17 +-
 Cargo.lock                    | 305 ++++++++++++++++++++++++++++++++--
 Cargo.toml                    |   6 +-
 crates/float/Cargo.toml       |   5 +-
 flake.nix                     |  24 ++-
 6 files changed, 333 insertions(+), 27 deletions(-)
 delete mode 100644 .cargo/config.toml

diff --git a/.cargo/config.toml b/.cargo/config.toml
deleted file mode 100644
index 0c6c27f8..00000000
--- a/.cargo/config.toml
+++ /dev/null
@@ -1,3 +0,0 @@
-[target.wasm32-unknown-unknown]
-# Required to make the rand feature of alloy work for wasm32-unknown-unknown
-rustflags = ["--cfg", "getrandom_backend=\"wasm_js\""]
diff --git a/.github/workflows/rainix.yaml b/.github/workflows/rainix.yaml
index 4bcecb14..d5da6bca 100644
--- a/.github/workflows/rainix.yaml
+++ b/.github/workflows/rainix.yaml
@@ -9,9 +9,20 @@ jobs:
   rainix:
     strategy:
       matrix:
-        os: [ubuntu-latest]
-        task:
-          [rainix-sol-test, rainix-sol-static, rainix-rs-test, rainix-rs-static]
+        os: [ubuntu-latest, macos-latest]
+        task: [rainix-rs-test]
+        include:
+          # Solidity doesn't need to be tested on multiple platforms
+          - os: ubuntu-latest
+            task: rainix-sol-test
+          - os: ubuntu-latest
+            task: rainix-sol-static
+          # We don't need to do rust static analysis on multiple platforms
+          - os: ubuntu-latest
+            task: rainix-rs-static
+          # We don't need to do build for wasm32 on multiple platforms
+          - os: ubuntu-latest
+            task: test-wasm-build
       fail-fast: false
     runs-on: ${{ matrix.os }}
     env:
diff --git a/Cargo.lock b/Cargo.lock
index da0999ec..21b5dd4d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,17 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "addchain"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b2e69442aa5628ea6951fa33e24efe8313f4321a91bd729fc2f75bdfc858570"
+dependencies = [
+ "num-bigint 0.3.3",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "addr2line"
 version = "0.24.2"
@@ -671,7 +682,7 @@ dependencies = [
  "fnv",
  "hashbrown 0.15.4",
  "itertools 0.13.0",
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-integer",
  "num-traits",
  "zeroize",
@@ -688,7 +699,7 @@ dependencies = [
  "ark-serialize 0.3.0",
  "ark-std 0.3.0",
  "derivative",
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-traits",
  "paste",
  "rustc_version 0.3.3",
@@ -708,7 +719,7 @@ dependencies = [
  "derivative",
  "digest 0.10.7",
  "itertools 0.10.5",
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-traits",
  "paste",
  "rustc_version 0.4.1",
@@ -729,7 +740,7 @@ dependencies = [
  "digest 0.10.7",
  "educe",
  "itertools 0.13.0",
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-traits",
  "paste",
  "zeroize",
@@ -771,7 +782,7 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "db2fd794a08ccb318058009eefdf15bcaaaaf6f8161eb3345f907222bac38b20"
 dependencies = [
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-traits",
  "quote",
  "syn 1.0.109",
@@ -783,7 +794,7 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7abe79b0e4288889c4574159ab790824d0033b9fdcb2a112a3182fac2e514565"
 dependencies = [
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-traits",
  "proc-macro2",
  "quote",
@@ -796,7 +807,7 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09be120733ee33f7693ceaa202ca41accd5653b779563608f1234f78ae07c4b3"
 dependencies = [
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-traits",
  "proc-macro2",
  "quote",
@@ -829,7 +840,7 @@ dependencies = [
  "ark-relations",
  "ark-std 0.5.0",
  "educe",
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-integer",
  "num-traits",
  "tracing",
@@ -865,7 +876,7 @@ checksum = "adb7b85a02b83d2f22f89bd5cac66c9c89474240cb6207cb1efc16d098e822a5"
 dependencies = [
  "ark-std 0.4.0",
  "digest 0.10.7",
- "num-bigint",
+ "num-bigint 0.4.6",
 ]
 
 [[package]]
@@ -878,7 +889,7 @@ dependencies = [
  "ark-std 0.5.0",
  "arrayvec",
  "digest 0.10.7",
- "num-bigint",
+ "num-bigint 0.4.6",
 ]
 
 [[package]]
@@ -1030,6 +1041,15 @@ version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "55248b47b0caf0546f7988906588779981c43bb1bc9d0c44087278f80cdb44ba"
 
+[[package]]
+name = "bincode"
+version = "1.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1f45e9417d87227c7a56d22e471c6206462cba514c7590c09aff4cf6d1ddcad"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "bit-set"
 version = "0.8.0"
@@ -1083,6 +1103,19 @@ dependencies = [
  "wyz",
 ]
 
+[[package]]
+name = "blake3"
+version = "1.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3888aaa89e4b2a40fca9848e400f6a658a5a3978de7be858e209cafa8be9a4a0"
+dependencies = [
+ "arrayref",
+ "arrayvec",
+ "cc",
+ "cfg-if",
+ "constant_time_eq",
+]
+
 [[package]]
 name = "block-buffer"
 version = "0.9.0"
@@ -1222,6 +1255,12 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "constant_time_eq"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c74b8349d32d297c9134b8c88677813a227df8f779daa29bfc29c183fe3dca6"
+
 [[package]]
 name = "core-foundation"
 version = "0.9.4"
@@ -1572,10 +1611,27 @@ version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c0b50bfb653653f9ca9095b427bed08ab8d75a137839d9ad64eb11810d5b6393"
 dependencies = [
+ "byteorder",
+ "ff_derive",
  "rand_core 0.6.4",
  "subtle",
 ]
 
+[[package]]
+name = "ff_derive"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f10d12652036b0e99197587c6ba87a8fc3031986499973c030d8b44fcc151b60"
+dependencies = [
+ "addchain",
+ "num-bigint 0.3.3",
+ "num-integer",
+ "num-traits",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "fixed-hash"
 version = "0.8.0"
@@ -1725,6 +1781,12 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42012b0f064e01aa58b545fe3727f90f7dd4020f4a3ea735b50344965f5a57e9"
 
+[[package]]
+name = "gcd"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d758ba1b47b00caf47f24925c0074ecb20d6dfcffe7f6d53395c0465674841a"
+
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -2150,6 +2212,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba291022dbbd398a455acf126c1e341954079855bc60dfdda641363bd6922569"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itertools"
 version = "0.13.0"
@@ -2217,6 +2288,20 @@ dependencies = [
  "sha3-asm",
 ]
 
+[[package]]
+name = "kzg-rs"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9201effeea3fcc93b587904ae2df9ce97e433184b9d6d299e9ebc9830a546636"
+dependencies = [
+ "ff",
+ "hex",
+ "serde_arrays",
+ "sha2 0.10.9",
+ "sp1_bls12_381",
+ "spin",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.5.0"
@@ -2384,7 +2469,7 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "35bd024e8b2ff75562e5f34e7f4905839deb4b22955ef5e73d2fea1b9813cb23"
 dependencies = [
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-complex",
  "num-integer",
  "num-iter",
@@ -2392,6 +2477,17 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-bigint"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f6f7833f2cbf2360a6cfd58cd41a53aa7a90bd4c202f5b1c7dd2ed73c57b2c3"
+dependencies = [
+ "autocfg",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-bigint"
 version = "0.4.6"
@@ -2443,7 +2539,7 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f83d14da390562dca69fc84082e73e548e1ad308d24accdedd2720017cb37824"
 dependencies = [
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-integer",
  "num-traits",
 ]
@@ -2579,6 +2675,127 @@ dependencies = [
  "sha2 0.10.9",
 ]
 
+[[package]]
+name = "p3-baby-bear"
+version = "0.2.3-succinct"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7521838ecab2ddf4f7bc4ceebad06ec02414729598485c1ada516c39900820e8"
+dependencies = [
+ "num-bigint 0.4.6",
+ "p3-field",
+ "p3-mds",
+ "p3-poseidon2",
+ "p3-symmetric",
+ "rand 0.8.5",
+ "serde",
+]
+
+[[package]]
+name = "p3-dft"
+version = "0.2.3-succinct"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "46414daedd796f1eefcdc1811c0484e4bced5729486b6eaba9521c572c76761a"
+dependencies = [
+ "p3-field",
+ "p3-matrix",
+ "p3-maybe-rayon",
+ "p3-util",
+ "tracing",
+]
+
+[[package]]
+name = "p3-field"
+version = "0.2.3-succinct"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48948a0516b349e9d1cdb95e7236a6ee010c44e68c5cc78b4b92bf1c4022a0d9"
+dependencies = [
+ "itertools 0.12.1",
+ "num-bigint 0.4.6",
+ "num-traits",
+ "p3-util",
+ "rand 0.8.5",
+ "serde",
+]
+
+[[package]]
+name = "p3-matrix"
+version = "0.2.3-succinct"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e4de3f373589477cb735ea58e125898ed20935e03664b4614c7fac258b3c42f"
+dependencies = [
+ "itertools 0.12.1",
+ "p3-field",
+ "p3-maybe-rayon",
+ "p3-util",
+ "rand 0.8.5",
+ "serde",
+ "tracing",
+]
+
+[[package]]
+name = "p3-maybe-rayon"
+version = "0.2.3-succinct"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c3968ad1160310296eb04f91a5f4edfa38fe1d6b2b8cd6b5c64e6f9b7370979e"
+
+[[package]]
+name = "p3-mds"
+version = "0.2.3-succinct"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2356b1ed0add6d5dfbf7a338ce534a6fde827374394a52cec16a0840af6e97c9"
+dependencies = [
+ "itertools 0.12.1",
+ "p3-dft",
+ "p3-field",
+ "p3-matrix",
+ "p3-symmetric",
+ "p3-util",
+ "rand 0.8.5",
+]
+
+[[package]]
+name = "p3-poseidon2"
+version = "0.2.3-succinct"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da1eec7e1b6900581bedd95e76e1ef4975608dd55be9872c9d257a8a9651c3a"
+dependencies = [
+ "gcd",
+ "p3-field",
+ "p3-mds",
+ "p3-symmetric",
+ "rand 0.8.5",
+ "serde",
+]
+
+[[package]]
+name = "p3-symmetric"
+version = "0.2.3-succinct"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edb439bea1d822623b41ff4b51e3309e80d13cadf8b86d16ffd5e6efb9fdc360"
+dependencies = [
+ "itertools 0.12.1",
+ "p3-field",
+ "serde",
+]
+
+[[package]]
+name = "p3-util"
+version = "0.2.3-succinct"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6c2c2010678b9332b563eaa38364915b585c1a94b5ca61e2c7541c087ddda5c"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "pairing"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81fec4625e73cf41ef4bb6846cafa6d44736525f442ba45e407c4a000a13996f"
+dependencies = [
+ "group",
+]
+
 [[package]]
 name = "parity-scale-codec"
 version = "3.7.5"
@@ -3164,6 +3381,7 @@ dependencies = [
  "c-kzg",
  "cfg-if",
  "k256",
+ "kzg-rs",
  "libsecp256k1",
  "once_cell",
  "p256",
@@ -3237,7 +3455,7 @@ dependencies = [
  "bytes",
  "fastrlp 0.3.1",
  "fastrlp 0.4.0",
- "num-bigint",
+ "num-bigint 0.4.6",
  "num-integer",
  "num-traits",
  "parity-scale-codec",
@@ -3447,6 +3665,15 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "serde_arrays"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94a16b99c5ea4fe3daccd14853ad260ec00ea043b2708d1fd1da3106dcd8d9df"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "serde_derive"
 version = "1.0.219"
@@ -3617,6 +3844,58 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "sp1-lib"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03046db52868c1b60e8acffa0777ef6dc11ec1bbbb10b9eb612a871f69c8d3f6"
+dependencies = [
+ "bincode",
+ "serde",
+ "sp1-primitives",
+]
+
+[[package]]
+name = "sp1-primitives"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6939d6b2f63e54e5fbd208a0293027608f22511741b62fe32b6f67f6c144e0c0"
+dependencies = [
+ "bincode",
+ "blake3",
+ "cfg-if",
+ "hex",
+ "lazy_static",
+ "num-bigint 0.4.6",
+ "p3-baby-bear",
+ "p3-field",
+ "p3-poseidon2",
+ "p3-symmetric",
+ "serde",
+ "sha2 0.10.9",
+]
+
+[[package]]
+name = "sp1_bls12_381"
+version = "0.8.0-sp1-5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac255e1704ebcdeec5e02f6a0ebc4d2e9e6b802161938330b6810c13a610c583"
+dependencies = [
+ "cfg-if",
+ "ff",
+ "group",
+ "pairing",
+ "rand_core 0.6.4",
+ "sp1-lib",
+ "subtle",
+]
+
+[[package]]
+name = "spin"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6980e8d7511241f8acf4aebddbb1ff938df5eebe98691418c4468d0b72a96a67"
+
 [[package]]
 name = "spki"
 version = "0.7.3"
diff --git a/Cargo.toml b/Cargo.toml
index 48eb7988..06950bff 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,10 @@ homepage = "https://github.com/rainprotocol/rain.math.float"
 
 [workspace.dependencies]
 alloy = { version = "1.0.9", features = ["sol-types", "json-rpc"] }
-revm = "25.0.0"
+revm = { version = "25.0.0", default-features = false, features = [
+    "portable",
+    "std",
+    "tracer",
+] }
 thiserror = "2.0.12"
 proptest = "1.7.0"
diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index 6a414ea1..bb3dc985 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -7,10 +7,13 @@ homepage.workspace = true
 
 [dependencies]
 alloy.workspace = true
-revm.workspace = true
 thiserror.workspace = true
 
+[target.'cfg(not(target_family = "wasm"))'.dependencies]
+revm = { workspace = true, features = ["c-kzg", "portable", "std", "tracer"] }
+
 [target.'cfg(target_family = "wasm")'.dependencies]
+revm = { workspace = true, features = ["kzg-rs", "portable", "std", "tracer"] }
 getrandom = { version = "0.2.11", features = ["js", "js-sys"] }
 
 [dev-dependencies]
diff --git a/flake.nix b/flake.nix
index 640ac762..a1637244 100644
--- a/flake.nix
+++ b/flake.nix
@@ -8,10 +8,22 @@
 
   outputs = { self, flake-utils, rainix }:
     flake-utils.lib.eachDefaultSystem (system:
-      {
-        packages = rainix.packages.${system};
-        devShells = rainix.devShells.${system};
-      }
-    );
+      let pkgs = rainix.pkgs.${system};
+      in rec {
+        packages = rainix.packages.${system} // {
+          test-wasm-build = rainix.mkTask.${system} {
+            name = "test-wasm-build";
+            body = ''
+              set -euxo pipefail
+              cargo build --target wasm32-unknown-unknown --workspace
+            '';
+          };
+        };
 
-}
\ No newline at end of file
+        devShells = pkgs.mkShell {
+          shellHook = rainix.devShells.${system}.default.shellHook;
+          packages = [ packages.test-wasm-build ];
+          inputsFrom = [ rainix.devShells.${system}.default ];
+        };
+      });
+}

From d7237974ac7ac187e2b99f2db6ecb5e8cc4d76b7 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Wed, 11 Jun 2025 14:09:21 +0400
Subject: [PATCH 20/28] fix nix flake

---
 flake.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/flake.nix b/flake.nix
index a1637244..22d563c9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -20,7 +20,7 @@
           };
         };
 
-        devShells = pkgs.mkShell {
+        devShells.default = pkgs.mkShell {
           shellHook = rainix.devShells.${system}.default.shellHook;
           packages = [ packages.test-wasm-build ];
           inputsFrom = [ rainix.devShells.${system}.default ];

From b4b59fa056dd6ab7557c3f3d111bfa119e21c72e Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Wed, 11 Jun 2025 14:29:46 +0400
Subject: [PATCH 21/28] fix ci garbage collection

---
 .github/workflows/rainix.yaml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/rainix.yaml b/.github/workflows/rainix.yaml
index d5da6bca..7457d18f 100644
--- a/.github/workflows/rainix.yaml
+++ b/.github/workflows/rainix.yaml
@@ -45,9 +45,11 @@ jobs:
           primary-key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix', '**/flake.lock') }}
           # if there's no cache hit, restore a cache by this prefix
           restore-prefixes-first-match: nix-${{ runner.os }}-
-          gc-max-store-size-linux: 1G
+          gc-max-store-size-linux: 5G
+          gc-max-store-size-macos: 5G
 
       - run: nix develop -c rainix-sol-prelude
+        if: matrix.task == 'rainix-rs-test' || matrix.task == 'rainix-rs-static' || matrix.task == 'test-wasm-build'
 
       - name: Run ${{ matrix.task }}
         env:

From fea8b564027cc4dd92f037d2b378af8d7c655ce1 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Wed, 11 Jun 2025 14:43:50 +0400
Subject: [PATCH 22/28] selector refactor

---
 crates/float/src/lib.rs | 64 +++++++++++++++++++----------------------
 1 file changed, 29 insertions(+), 35 deletions(-)

diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index a2350e18..ed179fb2 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -1,5 +1,5 @@
 use alloy::primitives::{Address, Bytes, FixedBytes};
-use alloy::sol_types::SolInterface;
+use alloy::sol_types::{SolError, SolInterface};
 use alloy::{sol, sol_types::SolCall};
 use revm::context::result::{EVMError, ExecutionResult, HaltReason, Output, SuccessReason};
 use revm::context::{BlockEnv, CfgEnv, Evm, TxEnv};
@@ -9,7 +9,6 @@ use revm::handler::instructions::EthInstructions;
 use revm::interpreter::interpreter::EthInterpreter;
 use revm::primitives::{address, fixed_bytes};
 use revm::{Context, MainBuilder, MainContext, SystemCallEvm};
-use std::fmt;
 use thiserror::Error;
 
 sol!(
@@ -53,20 +52,40 @@ pub enum DecimalFloatErrorSelector {
     WithTargetExponentOverflow,
 }
 
+impl TryFrom<FixedBytes<4>> for DecimalFloatErrorSelector {
+    type Error = FixedBytes<4>;
+
+    fn try_from(error_selector: FixedBytes<4>) -> Result<Self, Self::Error> {
+        let FixedBytes(bytes) = error_selector;
+        match bytes {
+            <DecimalFloat::CoefficientOverflow as SolError>::SELECTOR => {
+                Ok(Self::CoefficientOverflow)
+            }
+            <DecimalFloat::ExponentOverflow as SolError>::SELECTOR => Ok(Self::ExponentOverflow),
+            <DecimalFloat::Log10Negative as SolError>::SELECTOR => Ok(Self::Log10Negative),
+            <DecimalFloat::Log10Zero as SolError>::SELECTOR => Ok(Self::Log10Zero),
+            <DecimalFloat::LossyConversionFromFloat as SolError>::SELECTOR => {
+                Ok(Self::LossyConversionFromFloat)
+            }
+            <DecimalFloat::NegativeFixedDecimalConversion as SolError>::SELECTOR => {
+                Ok(Self::NegativeFixedDecimalConversion)
+            }
+            <DecimalFloat::WithTargetExponentOverflow as SolError>::SELECTOR => {
+                Ok(Self::WithTargetExponentOverflow)
+            }
+            _ => Err(error_selector),
+        }
+    }
+}
+
 type EvmContext = Context<BlockEnv, TxEnv, CfgEnv, InMemoryDB>;
 pub struct Calculator {
     evm: Evm<EvmContext, (), EthInstructions<EthInterpreter, EvmContext>, EthPrecompiles>,
 }
 
-#[derive(Copy, Clone, PartialEq)]
+#[derive(Debug, Copy, Clone, PartialEq)]
 pub struct Float(FixedBytes<32>);
 
-impl fmt::Debug for Float {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.debug_tuple("Float").field(&self.0).finish()
-    }
-}
-
 impl Calculator {
     pub fn new() -> Result<Self, CalculatorError> {
         let mut db = InMemoryDB::default();
@@ -121,32 +140,7 @@ impl Calculator {
             } = DecimalFloat::parseCall::abi_decode_returns(output.as_ref())?;
 
             if error_selector != fixed_bytes!("00000000") {
-                let FixedBytes(bytes) = error_selector;
-                let selector = match bytes {
-                    <DecimalFloat::CoefficientOverflow as alloy::sol_types::SolError>::SELECTOR => {
-                        Ok(DecimalFloatErrorSelector::CoefficientOverflow)
-                    }
-                    <DecimalFloat::ExponentOverflow as alloy::sol_types::SolError>::SELECTOR => {
-                        Ok(DecimalFloatErrorSelector::ExponentOverflow)
-                    }
-                    <DecimalFloat::Log10Negative as alloy::sol_types::SolError>::SELECTOR => {
-                        Ok(DecimalFloatErrorSelector::Log10Negative)
-                    }
-                    <DecimalFloat::Log10Zero as alloy::sol_types::SolError>::SELECTOR => {
-                        Ok(DecimalFloatErrorSelector::Log10Zero)
-                    }
-                    <DecimalFloat::LossyConversionFromFloat as alloy::sol_types::SolError>::SELECTOR => {
-                        Ok(DecimalFloatErrorSelector::LossyConversionFromFloat)
-                    }
-                    <DecimalFloat::NegativeFixedDecimalConversion as alloy::sol_types::SolError>::SELECTOR => {
-                        Ok(DecimalFloatErrorSelector::NegativeFixedDecimalConversion)
-                    }
-                    <DecimalFloat::WithTargetExponentOverflow as alloy::sol_types::SolError>::SELECTOR => {
-                        Ok(DecimalFloatErrorSelector::WithTargetExponentOverflow)
-                    }
-                    _ => Err(FixedBytes(bytes)),
-                };
-
+                let selector = DecimalFloatErrorSelector::try_from(error_selector);
                 return Err(CalculatorError::DecimalFloatSelector(selector));
             }
 

From 9d19c9e9ca0135b460dd830cdca4de4ad2faaf79 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Fri, 13 Jun 2025 13:01:01 +0400
Subject: [PATCH 23/28] arb float generation

---
 Cargo.lock                                | 76 +++++++++++++++++++++++
 Cargo.toml                                |  2 +-
 crates/float/proptest-regressions/lib.txt |  1 +
 crates/float/src/lib.rs                   | 56 +++++++++++++----
 src/concrete/DecimalFloat.sol             |  8 +++
 5 files changed, 130 insertions(+), 13 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 21b5dd4d..996ebb1e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -91,6 +91,7 @@ dependencies = [
  "alloy-rlp",
  "alloy-serde",
  "alloy-trie",
+ "arbitrary",
  "auto_impl",
  "c-kzg",
  "derive_more",
@@ -115,6 +116,7 @@ dependencies = [
  "alloy-primitives",
  "alloy-rlp",
  "alloy-serde",
+ "arbitrary",
  "serde",
 ]
 
@@ -162,7 +164,10 @@ dependencies = [
  "alloy-primitives",
  "alloy-sol-type-parser",
  "alloy-sol-types",
+ "arbitrary",
+ "derive_arbitrary",
  "itoa",
+ "proptest",
  "serde",
  "serde_json",
  "winnow",
@@ -176,7 +181,9 @@ checksum = "741bdd7499908b3aa0b159bba11e71c8cddd009a2c2eb7a06e825f1ec87900a5"
 dependencies = [
  "alloy-primitives",
  "alloy-rlp",
+ "arbitrary",
  "crc",
+ "rand 0.8.5",
  "serde",
  "thiserror",
 ]
@@ -189,6 +196,8 @@ checksum = "7b82752a889170df67bbb36d42ca63c531eb16274f0d7299ae2a680facba17bd"
 dependencies = [
  "alloy-primitives",
  "alloy-rlp",
+ "arbitrary",
+ "rand 0.8.5",
  "serde",
 ]
 
@@ -200,7 +209,9 @@ checksum = "9d4769c6ffddca380b0070d71c8b7f30bed375543fe76bb2f74ec0acf4b7cd16"
 dependencies = [
  "alloy-primitives",
  "alloy-rlp",
+ "arbitrary",
  "k256",
+ "rand 0.8.5",
  "serde",
  "thiserror",
 ]
@@ -217,6 +228,7 @@ dependencies = [
  "alloy-primitives",
  "alloy-rlp",
  "alloy-serde",
+ "arbitrary",
  "auto_impl",
  "c-kzg",
  "derive_more",
@@ -310,9 +322,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a326d47106039f38b811057215a92139f46eef7983a4b77b10930a0ea5685b1e"
 dependencies = [
  "alloy-rlp",
+ "arbitrary",
  "bytes",
  "cfg-if",
  "const-hex",
+ "derive_arbitrary",
  "derive_more",
  "foldhash",
  "hashbrown 0.15.4",
@@ -322,6 +336,7 @@ dependencies = [
  "keccak-asm",
  "paste",
  "proptest",
+ "proptest-derive",
  "rand 0.9.1",
  "ruint",
  "rustc-hash",
@@ -423,6 +438,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c000cab4ec26a4b3e29d144e999e1c539c2fa0abed871bf90311eb3466187ca8"
 dependencies = [
  "alloy-primitives",
+ "alloy-rpc-types-engine",
  "alloy-rpc-types-eth",
  "alloy-serde",
  "serde",
@@ -439,6 +455,24 @@ dependencies = [
  "alloy-serde",
 ]
 
+[[package]]
+name = "alloy-rpc-types-engine"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cab52691970553d84879d777419fa7b6a2e92e9fe8641f9324cc071008c2f656"
+dependencies = [
+ "alloy-consensus",
+ "alloy-eips",
+ "alloy-primitives",
+ "alloy-rlp",
+ "alloy-serde",
+ "arbitrary",
+ "derive_more",
+ "rand 0.8.5",
+ "serde",
+ "strum",
+]
+
 [[package]]
 name = "alloy-rpc-types-eth"
 version = "1.0.9"
@@ -453,6 +487,7 @@ dependencies = [
  "alloy-rlp",
  "alloy-serde",
  "alloy-sol-types",
+ "arbitrary",
  "itertools 0.14.0",
  "serde",
  "serde_json",
@@ -466,6 +501,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "730e8f2edf2fc224cabd1c25d090e1655fa6137b2e409f92e5eec735903f1507"
 dependencies = [
  "alloy-primitives",
+ "arbitrary",
  "serde",
  "serde_json",
 ]
@@ -620,9 +656,13 @@ checksum = "983d99aa81f586cef9dae38443245e585840fcf0fc58b09aee0b1f27aed1d500"
 dependencies = [
  "alloy-primitives",
  "alloy-rlp",
+ "arbitrary",
  "arrayvec",
+ "derive_arbitrary",
  "derive_more",
  "nybbles",
+ "proptest",
+ "proptest-derive",
  "serde",
  "smallvec",
  "tracing",
@@ -643,6 +683,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "arbitrary"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dde20b3d026af13f561bdd0f15edf01fc734f0dafcedbaf42bba506a9517f223"
+dependencies = [
+ "derive_arbitrary",
+]
+
 [[package]]
 name = "ark-bls12-381"
 version = "0.5.0"
@@ -1179,6 +1228,7 @@ version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7318cfa722931cb5fe0838b98d3ce5621e75f6a6408abc21721d80de9223f2e4"
 dependencies = [
+ "arbitrary",
  "blst",
  "cc",
  "glob",
@@ -1426,6 +1476,17 @@ dependencies = [
  "syn 2.0.102",
 ]
 
+[[package]]
+name = "derive_arbitrary"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30542c1ad912e0e3d22a1935c290e12e8a29d704a420177a31faad4a601a0800"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.102",
+]
+
 [[package]]
 name = "derive_more"
 version = "2.0.1"
@@ -2182,6 +2243,7 @@ version = "2.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cea70ddb795996207ad57735b50c5982d8844f38ba9ee5f1aedcfb708a2aa11e"
 dependencies = [
+ "arbitrary",
  "equivalent",
  "hashbrown 0.15.4",
  "serde",
@@ -2592,6 +2654,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8983bb634df7248924ee0c4c3a749609b5abcb082c28fffe3254b3eb3602b307"
 dependencies = [
  "alloy-rlp",
+ "arbitrary",
  "const-hex",
  "proptest",
  "serde",
@@ -3065,6 +3128,17 @@ dependencies = [
  "unarray",
 ]
 
+[[package]]
+name = "proptest-derive"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ee1c9ac207483d5e7db4940700de86a9aae46ef90c48b57f99fe7edb8345e49"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.102",
+]
+
 [[package]]
 name = "quick-error"
 version = "1.2.3"
@@ -3450,6 +3524,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "11256b5fe8c68f56ac6f39ef0720e592f33d2367a4782740d9c9142e889c7fb4"
 dependencies = [
  "alloy-rlp",
+ "arbitrary",
  "ark-ff 0.3.0",
  "ark-ff 0.4.2",
  "bytes",
@@ -3831,6 +3906,7 @@ version = "1.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
 dependencies = [
+ "arbitrary",
  "serde",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 06950bff..d02a1f08 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ license = "CAL-1.0"
 homepage = "https://github.com/rainprotocol/rain.math.float"
 
 [workspace.dependencies]
-alloy = { version = "1.0.9", features = ["sol-types", "json-rpc"] }
+alloy = { version = "1.0.9", features = ["sol-types", "json-rpc", "arbitrary"] }
 revm = { version = "25.0.0", default-features = false, features = [
     "portable",
     "std",
diff --git a/crates/float/proptest-regressions/lib.txt b/crates/float/proptest-regressions/lib.txt
index 70d20bf9..7070cb90 100644
--- a/crates/float/proptest-regressions/lib.txt
+++ b/crates/float/proptest-regressions/lib.txt
@@ -5,3 +5,4 @@
 # It is recommended to check this file in to source control so that
 # everyone who runs the test benefits from these saved cases.
 cc 664cbb4a3416dcc12fe1196bdf33bdf3f9e1403c6446f0516dc704da23be5723 # shrinks to a = Float(0x0000000000000000000000000000000000000000000000000000000000000000), b = Float(0xffffffff00000000000000000000000000000000000000000000000000000001)
+cc 3fd2457aad2f1f4960353eb70458c7806f645c48898d3d336369b396c6cd13e1 # shrinks to a = Float(0x000000000000000000000000000000000000000000000000534a0c3580000000), b = Float(0x00000000000000000000000000000000000000000000000008e5c21900000000)
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index ed179fb2..56f0a699 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -1,3 +1,5 @@
+#[cfg(test)]
+use alloy::primitives::aliases::I224;
 use alloy::primitives::{Address, Bytes, FixedBytes};
 use alloy::sol_types::{SolError, SolInterface};
 use alloy::{sol, sol_types::SolCall};
@@ -130,6 +132,25 @@ impl Calculator {
         }
     }
 
+    #[allow(dead_code)] // will be used in future tests
+    #[cfg(test)]
+    fn pack_lossless(
+        &mut self,
+        coefficient: I224,
+        exponent: i32,
+    ) -> Result<Float, CalculatorError> {
+        let calldata = DecimalFloat::packLosslessCall {
+            coefficient,
+            exponent,
+        }
+        .abi_encode();
+
+        self.execute_call(Bytes::from(calldata), |output| {
+            let decoded = DecimalFloat::packLosslessCall::abi_decode_returns(output.as_ref())?;
+            Ok(Float(decoded))
+        })
+    }
+
     pub fn parse(&mut self, str: String) -> Result<Float, CalculatorError> {
         let calldata = DecimalFloat::parseCall { str }.abi_encode();
 
@@ -187,7 +208,18 @@ mod tests {
     use proptest::prelude::*;
 
     prop_compose! {
-        fn valid_float()(
+        fn arb_float()(
+            coefficient in any::<I224>(),
+            exponent in any::<i32>(),
+        ) -> Float {
+            let mut calculator = Calculator::new().unwrap();
+
+            calculator.pack_lossless(coefficient, exponent).unwrap()
+        }
+    }
+
+    prop_compose! {
+        fn reasonable_float()(
             int_part in -10i128.pow(18)..10i128.pow(18),
             decimal_places in 0u8..18u8,
             decimal_part in 0u128..10u128.pow(18u32)
@@ -237,19 +269,15 @@ mod tests {
             if selector == fixed_bytes!("34bd2069")
         ));
 
-        // NOTE: I'd expect this (over quintillion and 19 decimals) to produce an error but it doesn't
-
+        // // NOTE: I'd expect this (over quintillion and 19 decimals) to produce an error but it doesn't
         // let float = calculator
-        //     .parse("1341234234625468391.1341234234625468391".to_string())
-        //     .unwrap_err();
-
-        // The value produced (broken down into first 224 and last 32 bits):
-        // 0xffffffed0000000000000000000000000a171f8863f1dca211b12be4 0xebc9a7e7
+        //     .parse("100000000000000000000.1341234234625468391".to_string())
+        //     .unwrap();
     }
 
     proptest! {
         #[test]
-        fn test_parse_format(float in valid_float()) {
+        fn test_parse_format(float in reasonable_float()) {
             let mut calculator = Calculator::new().unwrap();
 
             let formatted = calculator.format(float).unwrap();
@@ -260,21 +288,25 @@ mod tests {
 
     proptest! {
         #[test]
-        fn test_add(a in valid_float(), b in valid_float()) {
+        fn test_add(a in reasonable_float(), b in reasonable_float()) {
             let mut calculator = Calculator::new().unwrap();
 
             calculator.add(a, b).unwrap();
         }
+    }
 
+    proptest! {
         #[test]
-        fn test_sub(a in valid_float(), b in valid_float()) {
+        fn test_sub(a in reasonable_float(), b in reasonable_float()) {
             let mut calculator = Calculator::new().unwrap();
 
             calculator.sub(a, b).unwrap();
         }
+    }
 
+    proptest! {
         #[test]
-        fn test_add_sub(a in valid_float(), b in valid_float()) {
+        fn test_add_sub(a in reasonable_float(), b in reasonable_float()) {
             let mut calculator = Calculator::new().unwrap();
 
             let sum = calculator.add(a, b).unwrap();
diff --git a/src/concrete/DecimalFloat.sol b/src/concrete/DecimalFloat.sol
index 4026fa33..9b59a6f8 100644
--- a/src/concrete/DecimalFloat.sol
+++ b/src/concrete/DecimalFloat.sol
@@ -163,4 +163,12 @@ contract DecimalFloat {
     function isZero(Float a) external pure returns (bool) {
         return a.isZero();
     }
+
+    /// Exposes `LibDecimalFloat.packLossless` for offchain use.
+    /// @param coefficient The coefficient to pack.
+    /// @param exponent The exponent to pack.
+    /// @return The packed float.
+    function packLossless(int224 coefficient, int32 exponent) external pure returns (Float) {
+        return LibDecimalFloat.packLossless(coefficient, exponent);
+    }
 }

From 0007e78f9b440edc65b8f40612a10c41d1525581 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Fri, 13 Jun 2025 15:32:34 +0400
Subject: [PATCH 24/28] fix wasm build

---
 Cargo.lock              | 139 +++++++++++++++++++---------------------
 Cargo.toml              |   2 +-
 crates/float/Cargo.toml |   1 +
 crates/float/src/lib.rs |  13 ++--
 4 files changed, 71 insertions(+), 84 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 996ebb1e..00365697 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -403,7 +403,7 @@ checksum = "64b728d511962dda67c1bc7ea7c03736ec275ed2cf4c35d9585298ac9ccf3b73"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -548,7 +548,7 @@ dependencies = [
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -565,7 +565,7 @@ dependencies = [
  "proc-macro-error2",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
  "syn-solidity",
  "tiny-keccak",
 ]
@@ -584,7 +584,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde_json",
- "syn 2.0.102",
+ "syn 2.0.103",
  "syn-solidity",
 ]
 
@@ -822,7 +822,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "62945a2f7e6de02a31fe400aa489f0e0f5b2502e69f95f853adb82a96c7a6b60"
 dependencies = [
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -860,7 +860,7 @@ dependencies = [
  "num-traits",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -949,7 +949,7 @@ checksum = "213888f660fddcca0d257e88e54ac05bca01885f258ccdf695bafd77031bb69d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1016,7 +1016,7 @@ checksum = "c7c24de15d275a1ecfd47a380fb4d5ec9bfe0933f309ed5e705b775596a3574d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1027,7 +1027,7 @@ checksum = "e539d3fca749fcee5236ab05e93a52867dd549cc157c8cb7f99595f3cedffdb5"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1048,7 +1048,7 @@ checksum = "ffdcb70bdbc4d478427380519163274ac86e52916e10f0a8889adf0f96d3fee7"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1240,9 +1240,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.2.26"
+version = "1.2.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "956a5e21988b87f372569b66183b78babf23ebc2e744b733e4350a752c4dafac"
+checksum = "d487aa071b5f64da6f19a3e848e3578944b726ee5a4854b82172f02aa876bfdc"
 dependencies = [
  "shlex",
 ]
@@ -1406,7 +1406,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "strsim",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1417,7 +1417,7 @@ checksum = "fc34b93ccb385b40dc71c6fceac4b2ad23662c7eeb248cf10d529b7e055b6ead"
 dependencies = [
  "darling_core",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1473,7 +1473,7 @@ checksum = "e73f2692d4bd3cac41dca28934a39894200c9fabf49586d77d0e5954af1d7902"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1484,7 +1484,7 @@ checksum = "30542c1ad912e0e3d22a1935c290e12e8a29d704a420177a31faad4a601a0800"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1504,7 +1504,7 @@ checksum = "bda628edc44c4bb645fbe0f758797143e4e07926f7ebf4e9bdfbd3d2ce621df3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
  "unicode-xid",
 ]
 
@@ -1537,7 +1537,7 @@ checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1570,7 +1570,7 @@ dependencies = [
  "enum-ordinalize",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1619,7 +1619,7 @@ checksum = "0d28318a75d4aead5c4db25382e8ef717932d0346600cacae6357eb5941bc5ff"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1803,7 +1803,7 @@ checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -1868,7 +1868,7 @@ dependencies = [
  "cfg-if",
  "js-sys",
  "libc",
- "wasi 0.11.0+wasi-snapshot-preview1",
+ "wasi 0.11.1+wasi-snapshot-preview1",
  "wasm-bindgen",
 ]
 
@@ -1939,9 +1939,9 @@ checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
 name = "hermit-abi"
-version = "0.5.1"
+version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f154ce46856750ed433c8649605bf7ed2de3bc35fd9d2a9f30cddd873c80cb08"
+checksum = "fc0fef456e4baa96da950455cd02c081ca953b141298e41db3fc7e36b1da849c"
 
 [[package]]
 name = "hex"
@@ -2223,7 +2223,7 @@ checksum = "a0eb5a3343abf848c0984fe4604b2b105da9539376e24fc0a3b0007411ae4fd9"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -2473,20 +2473,14 @@ checksum = "1b27834086c65ec3f9387b096d66e99f221cf081c2b738042aa252bcd41204e3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
 name = "memchr"
-version = "2.7.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
-
-[[package]]
-name = "mime"
-version = "0.3.17"
+version = "2.7.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
+checksum = "32a282da65faaf38286cf3be983213fcf1d2e2a58700e808f83f4ea9a4804bc0"
 
 [[package]]
 name = "miniz_oxide"
@@ -2504,7 +2498,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78bed444cc8a2160f01cbcf811ef18cac863ad68ae8ca62092e8db51d51c761c"
 dependencies = [
  "libc",
- "wasi 0.11.0+wasi-snapshot-preview1",
+ "wasi 0.11.1+wasi-snapshot-preview1",
  "windows-sys 0.59.0",
 ]
 
@@ -2644,7 +2638,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -2705,7 +2699,7 @@ checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -2884,7 +2878,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -2964,7 +2958,7 @@ dependencies = [
  "phf_shared",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -2993,7 +2987,7 @@ checksum = "6e918e4ff8c4549eb882f14b3a4bc8c8bc93de829416eacf579f1207a8fbf861"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -3096,7 +3090,7 @@ dependencies = [
  "proc-macro-error-attr2",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -3136,7 +3130,7 @@ checksum = "4ee1c9ac207483d5e7db4940700de86a9aae46ef90c48b57f99fe7edb8345e49"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -3250,9 +3244,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.5.12"
+version = "0.5.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "928fca9cf2aa042393a8325b9ead81d2f0df4cb12e1e24cef072922ccd99c5af"
+checksum = "0d04b7d0ee6b4a0207a0a7adb104d23ecb0b47d6beae7152d0fa34b692b29fd6"
 dependencies = [
  "bitflags",
 ]
@@ -3265,9 +3259,9 @@ checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
 
 [[package]]
 name = "reqwest"
-version = "0.12.19"
+version = "0.12.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2f8e5513d63f2e5b386eb5106dc67eaf3f84e95258e210489136b8b92ad6119"
+checksum = "eabf4c97d9130e2bf606614eb937e86edac8292eaa6f422f995d7e8de1eb1813"
 dependencies = [
  "base64",
  "bytes",
@@ -3278,12 +3272,9 @@ dependencies = [
  "hyper",
  "hyper-tls",
  "hyper-util",
- "ipnet",
  "js-sys",
  "log",
- "mime",
  "native-tls",
- "once_cell",
  "percent-encoding",
  "pin-project-lite",
  "rustls-pki-types",
@@ -3757,7 +3748,7 @@ checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -3812,7 +3803,7 @@ dependencies = [
  "darling",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -4019,7 +4010,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "rustversion",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -4041,9 +4032,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.102"
+version = "2.0.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6397daf94fa90f058bd0fd88429dd9e5738999cca8d701813c80723add80462"
+checksum = "e4307e30089d6fd6aff212f2da3a1f9e32f3223b1f010fb09b7c95f90f3ca1e8"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -4059,7 +4050,7 @@ dependencies = [
  "paste",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -4079,7 +4070,7 @@ checksum = "728a70f3dbaf5bab7f0c4b1ac8d7ae5ea60a4b5549c8a5914361c99147a709d2"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -4118,7 +4109,7 @@ checksum = "7f7cf42b4507d8ea322120659672cf1b9dbb93f8f2d4ecfd6e51350ff5b17a1d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -4204,7 +4195,7 @@ checksum = "6e06d43f1345a3bcd39f6a56dbb7dcab2ba47e68e8ac134855e7e2bdbaf8cab8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -4323,7 +4314,7 @@ checksum = "1b1ffbcf9c6f6b99d386e7444eb608ba646ae452a36b39737deb9663b610f662"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -4460,9 +4451,9 @@ dependencies = [
 
 [[package]]
 name = "wasi"
-version = "0.11.0+wasi-snapshot-preview1"
+version = "0.11.1+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
 
 [[package]]
 name = "wasi"
@@ -4495,7 +4486,7 @@ dependencies = [
  "log",
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
  "wasm-bindgen-shared",
 ]
 
@@ -4530,7 +4521,7 @@ checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -4589,7 +4580,7 @@ checksum = "a47fddd13af08290e67f4acabf4b459f647552718f683a7b415d290ac744a836"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -4600,14 +4591,14 @@ checksum = "bd9211b69f8dcdfa817bfd14bf1c97c9188afa36f4750130fcdf3f400eca9fa8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
 name = "windows-link"
-version = "0.1.1"
+version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76840935b766e1b0a05c0066835fb9ec80071d4c09a16f6bd5f7e655e3c14c38"
+checksum = "5e6ad25900d524eaabdbbb96d20b4311e1e7ae1699af4fb28c17ae66c80d798a"
 
 [[package]]
 name = "windows-result"
@@ -4711,9 +4702,9 @@ checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
 [[package]]
 name = "winnow"
-version = "0.7.10"
+version = "0.7.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c06928c8748d81b05c9be96aad92e1b6ff01833332f281e8cfca3be4b35fc9ec"
+checksum = "74c7b26e3480b707944fc872477815d29a8e429d2f93a1ce000f5fa84a15cbcd"
 dependencies = [
  "memchr",
 ]
@@ -4762,7 +4753,7 @@ checksum = "38da3c9736e16c5d3c8c597a9aaa5d1fa565d0532ae05e27c24aa62fb32c0ab6"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
  "synstructure",
 ]
 
@@ -4783,7 +4774,7 @@ checksum = "28a6e20d751156648aa063f3800b706ee209a32c0b4d9f24be3d980b01be55ef"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -4803,7 +4794,7 @@ checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
  "synstructure",
 ]
 
@@ -4824,7 +4815,7 @@ checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
 
 [[package]]
@@ -4857,5 +4848,5 @@ checksum = "5b96237efa0c878c64bd89c436f661be4e46b2f3eff1ebb976f7ef2321d2f58f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.102",
+ "syn 2.0.103",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index d02a1f08..06950bff 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ license = "CAL-1.0"
 homepage = "https://github.com/rainprotocol/rain.math.float"
 
 [workspace.dependencies]
-alloy = { version = "1.0.9", features = ["sol-types", "json-rpc", "arbitrary"] }
+alloy = { version = "1.0.9", features = ["sol-types", "json-rpc"] }
 revm = { version = "25.0.0", default-features = false, features = [
     "portable",
     "std",
diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index bb3dc985..3a0bdf2a 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -17,4 +17,5 @@ revm = { workspace = true, features = ["kzg-rs", "portable", "std", "tracer"] }
 getrandom = { version = "0.2.11", features = ["js", "js-sys"] }
 
 [dev-dependencies]
+alloy = { workspace = true, features = ["sol-types", "json-rpc", "arbitrary"] }
 proptest.workspace = true
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 56f0a699..05b862e2 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -221,16 +221,14 @@ mod tests {
     prop_compose! {
         fn reasonable_float()(
             int_part in -10i128.pow(18)..10i128.pow(18),
-            decimal_places in 0u8..18u8,
             decimal_part in 0u128..10u128.pow(18u32)
         ) -> Float {
             let mut calculator = Calculator::new().unwrap();
 
-            let num_str = if decimal_places == 0 {
+            let num_str = if decimal_part == 0 {
                 format!("{int_part}")
             } else {
-                let decimal_str = format!("{decimal_part:0width$}", width = decimal_places as usize);
-                format!("{int_part}.{decimal_str}")
+                format!("{int_part}.{decimal_part}")
             };
 
             calculator.parse(num_str).unwrap()
@@ -245,6 +243,7 @@ mod tests {
             .parse("1.1341234234625468391".to_string())
             .unwrap();
         // NOTE: LibFormatDecimalFloat.toDecimalString currently uses 18 decimal places
+        // TODO: make this fail on a separate PR
         let err = calculator.format(float).unwrap_err();
 
         assert!(matches!(
@@ -258,6 +257,7 @@ mod tests {
         let mut calculator = Calculator::new().unwrap();
 
         // NOTE: I'm not sure if this is supposed to give an error
+        // TODO: make this fail on a separate PR
         let float = calculator.parse("1.2.3".to_string()).unwrap();
         let string = calculator.format(float).unwrap();
         assert_eq!(string, "1.2");
@@ -268,11 +268,6 @@ mod tests {
             CalculatorError::DecimalFloatSelector(Err(selector))
             if selector == fixed_bytes!("34bd2069")
         ));
-
-        // // NOTE: I'd expect this (over quintillion and 19 decimals) to produce an error but it doesn't
-        // let float = calculator
-        //     .parse("100000000000000000000.1341234234625468391".to_string())
-        //     .unwrap();
     }
 
     proptest! {

From 9e62a2c619991c86047ca543608d0a2fafa94485 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Fri, 13 Jun 2025 16:55:33 +0400
Subject: [PATCH 25/28] use thread_local! to reduce the number of
 initializations

---
 Cargo.lock              |   1 +
 Cargo.toml              |   1 +
 crates/float/Cargo.toml |   1 +
 crates/float/src/lib.rs | 191 ++++++++++++++++++----------------------
 4 files changed, 88 insertions(+), 106 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 00365697..888f2386 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3166,6 +3166,7 @@ version = "0.1.0"
 dependencies = [
  "alloy",
  "getrandom 0.2.16",
+ "once_cell",
  "proptest",
  "revm",
  "thiserror",
diff --git a/Cargo.toml b/Cargo.toml
index 06950bff..0373588a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,3 +17,4 @@ revm = { version = "25.0.0", default-features = false, features = [
 ] }
 thiserror = "2.0.12"
 proptest = "1.7.0"
+once_cell = "1.21.3"
diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index 3a0bdf2a..ae7dd845 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -7,6 +7,7 @@ homepage.workspace = true
 
 [dependencies]
 alloy.workspace = true
+once_cell = "1.21.3"
 thiserror.workspace = true
 
 [target.'cfg(not(target_family = "wasm"))'.dependencies]
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 05b862e2..cbccb6c7 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -3,6 +3,7 @@ use alloy::primitives::aliases::I224;
 use alloy::primitives::{Address, Bytes, FixedBytes};
 use alloy::sol_types::{SolError, SolInterface};
 use alloy::{sol, sol_types::SolCall};
+use once_cell::unsync::Lazy;
 use revm::context::result::{EVMError, ExecutionResult, HaltReason, Output, SuccessReason};
 use revm::context::{BlockEnv, CfgEnv, Evm, TxEnv};
 use revm::database::InMemoryDB;
@@ -11,14 +12,31 @@ use revm::handler::instructions::EthInstructions;
 use revm::interpreter::interpreter::EthInterpreter;
 use revm::primitives::{address, fixed_bytes};
 use revm::{Context, MainBuilder, MainContext, SystemCallEvm};
+use std::cell::RefCell;
+use std::thread::AccessError;
 use thiserror::Error;
 
 sol!(
-    #![sol(all_derives = true)]
+    #![sol(all_derives)]
     DecimalFloat,
     "../../out/DecimalFloat.sol/DecimalFloat.json"
 );
 
+type EvmContext = Context<BlockEnv, TxEnv, CfgEnv, InMemoryDB>;
+type LocalEvm = Evm<EvmContext, (), EthInstructions<EthInterpreter, EvmContext>, EthPrecompiles>;
+
+thread_local! {
+    static LOCAL_EVM: Lazy<RefCell<LocalEvm>> = Lazy::new(|| {
+        let mut db = InMemoryDB::default();
+        let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::DEPLOYED_BYTECODE.clone());
+        let account_info = revm::state::AccountInfo::default().with_code(bytecode);
+        db.insert_account_info(FLOAT_ADDRESS, account_info);
+
+        let evm = Context::mainnet().with_db(db).build_mainnet();
+        RefCell::new(evm)
+    });
+}
+
 use DecimalFloat::DecimalFloatErrors;
 
 /// Fixed address where the DecimalFloat contract is deployed in the in-memory EVM.
@@ -26,7 +44,7 @@ use DecimalFloat::DecimalFloatErrors;
 const FLOAT_ADDRESS: Address = address!("00000000000000000000000000000000000f10a2");
 
 #[derive(Debug, Error)]
-pub enum CalculatorError {
+pub enum FloatError {
     #[error("EVM error: {0}")]
     Evm(#[from] EVMError<std::convert::Infallible>),
     #[error("Float execution reverted with output: {0}")]
@@ -41,6 +59,8 @@ pub enum CalculatorError {
     DecimalFloat(DecimalFloatErrors),
     #[error("Decimal Float error selector: {0:?}")]
     DecimalFloatSelector(Result<DecimalFloatErrorSelector, FixedBytes<4>>),
+    #[error(transparent)]
+    Access(#[from] AccessError),
 }
 
 #[derive(Debug)]
@@ -80,81 +100,60 @@ impl TryFrom<FixedBytes<4>> for DecimalFloatErrorSelector {
     }
 }
 
-type EvmContext = Context<BlockEnv, TxEnv, CfgEnv, InMemoryDB>;
-pub struct Calculator {
-    evm: Evm<EvmContext, (), EthInstructions<EthInterpreter, EvmContext>, EthPrecompiles>,
-}
-
-#[derive(Debug, Copy, Clone, PartialEq)]
-pub struct Float(FixedBytes<32>);
-
-impl Calculator {
-    pub fn new() -> Result<Self, CalculatorError> {
-        let mut db = InMemoryDB::default();
-        let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::DEPLOYED_BYTECODE.clone());
-        let account_info = revm::state::AccountInfo::default().with_code(bytecode);
-        db.insert_account_info(FLOAT_ADDRESS, account_info);
-
-        let evm = Context::mainnet().with_db(db).build_mainnet();
-
-        Ok(Calculator { evm })
-    }
-
-    fn execute_call<F, T>(
-        &mut self,
-        calldata: Bytes,
-        process_output: F,
-    ) -> Result<T, CalculatorError>
-    where
-        F: FnOnce(Bytes) -> Result<T, CalculatorError>,
-    {
-        let result_and_state = self
-            .evm
-            .transact_system_call_finalize(FLOAT_ADDRESS, calldata)?;
-
-        match result_and_state.result {
-            ExecutionResult::Success {
-                reason: SuccessReason::Return,
-                output: Output::Call(output),
-                ..
-            } => process_output(output),
-            ExecutionResult::Success { reason, output, .. } => {
-                Err(CalculatorError::UnexpectedSuccess(reason, output))
+fn execute_call<F, T>(calldata: Bytes, process_output: F) -> Result<T, FloatError>
+where
+    F: FnOnce(Bytes) -> Result<T, FloatError>,
+{
+    let result = LOCAL_EVM.try_with(|evm| {
+        let evm = &mut *evm.borrow_mut();
+        let result_and_state = evm.transact_system_call_finalize(FLOAT_ADDRESS, calldata)?;
+
+        Ok::<_, FloatError>(result_and_state.result)
+    })??;
+
+    match result {
+        ExecutionResult::Success {
+            reason: SuccessReason::Return,
+            output: Output::Call(output),
+            ..
+        } => process_output(output),
+        ExecutionResult::Success { reason, output, .. } => {
+            Err(FloatError::UnexpectedSuccess(reason, output))
+        }
+        ExecutionResult::Revert { output, .. } => {
+            if let Ok(error) = DecimalFloat::DecimalFloatErrors::abi_decode(output.as_ref()) {
+                return Err(FloatError::DecimalFloat(error));
             }
-            ExecutionResult::Revert { output, .. } => {
-                if let Ok(error) = DecimalFloat::DecimalFloatErrors::abi_decode(output.as_ref()) {
-                    return Err(CalculatorError::DecimalFloat(error));
-                }
 
-                Err(CalculatorError::Revert(output))
-            }
-            ExecutionResult::Halt { reason, .. } => Err(CalculatorError::Halt(reason)),
+            Err(FloatError::Revert(output))
         }
+        ExecutionResult::Halt { reason, .. } => Err(FloatError::Halt(reason)),
     }
+}
+
+#[derive(Debug, Copy, Clone, PartialEq)]
+pub struct Float(FixedBytes<32>);
 
+impl Float {
     #[allow(dead_code)] // will be used in future tests
     #[cfg(test)]
-    fn pack_lossless(
-        &mut self,
-        coefficient: I224,
-        exponent: i32,
-    ) -> Result<Float, CalculatorError> {
+    fn pack_lossless(coefficient: I224, exponent: i32) -> Result<Self, FloatError> {
         let calldata = DecimalFloat::packLosslessCall {
             coefficient,
             exponent,
         }
         .abi_encode();
 
-        self.execute_call(Bytes::from(calldata), |output| {
+        execute_call(Bytes::from(calldata), |output| {
             let decoded = DecimalFloat::packLosslessCall::abi_decode_returns(output.as_ref())?;
             Ok(Float(decoded))
         })
     }
 
-    pub fn parse(&mut self, str: String) -> Result<Float, CalculatorError> {
+    pub fn parse(str: String) -> Result<Self, FloatError> {
         let calldata = DecimalFloat::parseCall { str }.abi_encode();
 
-        self.execute_call(Bytes::from(calldata), |output| {
+        execute_call(Bytes::from(calldata), |output| {
             let DecimalFloat::parseReturn {
                 _0: error_selector,
                 _1: parsed_float,
@@ -162,40 +161,40 @@ impl Calculator {
 
             if error_selector != fixed_bytes!("00000000") {
                 let selector = DecimalFloatErrorSelector::try_from(error_selector);
-                return Err(CalculatorError::DecimalFloatSelector(selector));
+                return Err(FloatError::DecimalFloatSelector(selector));
             }
 
             Ok(Float(parsed_float))
         })
     }
 
-    pub fn format(&mut self, float: Float) -> Result<String, CalculatorError> {
-        let Float(a) = float;
+    pub fn format(self) -> Result<String, FloatError> {
+        let Float(a) = self;
         let calldata = DecimalFloat::formatCall { a }.abi_encode();
 
-        self.execute_call(Bytes::from(calldata), |output| {
+        execute_call(Bytes::from(calldata), |output| {
             let decoded = DecimalFloat::formatCall::abi_decode_returns(output.as_ref())?;
             Ok(decoded)
         })
     }
 
-    pub fn add(&mut self, a: Float, b: Float) -> Result<Float, CalculatorError> {
-        let Float(a) = a;
+    pub fn add(self, b: Self) -> Result<Self, FloatError> {
+        let Float(a) = self;
         let Float(b) = b;
         let calldata = DecimalFloat::addCall { a, b }.abi_encode();
 
-        self.execute_call(Bytes::from(calldata), |output| {
+        execute_call(Bytes::from(calldata), |output| {
             let decoded = DecimalFloat::addCall::abi_decode_returns(output.as_ref())?;
             Ok(Float(decoded))
         })
     }
 
-    pub fn sub(&mut self, a: Float, b: Float) -> Result<Float, CalculatorError> {
-        let Float(a) = a;
+    pub fn sub(self: Self, b: Self) -> Result<Self, FloatError> {
+        let Float(a) = self;
         let Float(b) = b;
         let calldata = DecimalFloat::subCall { a, b }.abi_encode();
 
-        self.execute_call(Bytes::from(calldata), |output| {
+        execute_call(Bytes::from(calldata), |output| {
             let decoded = DecimalFloat::subCall::abi_decode_returns(output.as_ref())?;
             Ok(Float(decoded))
         })
@@ -212,9 +211,7 @@ mod tests {
             coefficient in any::<I224>(),
             exponent in any::<i32>(),
         ) -> Float {
-            let mut calculator = Calculator::new().unwrap();
-
-            calculator.pack_lossless(coefficient, exponent).unwrap()
+            Float::pack_lossless(coefficient, exponent).unwrap()
         }
     }
 
@@ -223,49 +220,39 @@ mod tests {
             int_part in -10i128.pow(18)..10i128.pow(18),
             decimal_part in 0u128..10u128.pow(18u32)
         ) -> Float {
-            let mut calculator = Calculator::new().unwrap();
-
             let num_str = if decimal_part == 0 {
                 format!("{int_part}")
             } else {
                 format!("{int_part}.{decimal_part}")
             };
 
-            calculator.parse(num_str).unwrap()
+            Float::parse(num_str).unwrap()
         }
     }
 
     #[test]
     fn test_parse_and_format() {
-        let mut calculator = Calculator::new().unwrap();
-
-        let float = calculator
-            .parse("1.1341234234625468391".to_string())
-            .unwrap();
+        let float = Float::parse("1.1341234234625468391".to_string()).unwrap();
         // NOTE: LibFormatDecimalFloat.toDecimalString currently uses 18 decimal places
         // TODO: make this fail on a separate PR
-        let err = calculator.format(float).unwrap_err();
+        let err = float.format().unwrap_err();
 
         assert!(matches!(
             err,
-            CalculatorError::DecimalFloat(DecimalFloatErrors::LossyConversionFromFloat(_))
+            FloatError::DecimalFloat(DecimalFloatErrors::LossyConversionFromFloat(_))
         ));
     }
 
     #[test]
     fn test_parse_edge_cases() {
-        let mut calculator = Calculator::new().unwrap();
-
-        // NOTE: I'm not sure if this is supposed to give an error
-        // TODO: make this fail on a separate PR
-        let float = calculator.parse("1.2.3".to_string()).unwrap();
-        let string = calculator.format(float).unwrap();
+        let float = Float::parse("1.2.3".to_string()).unwrap();
+        let string = float.format().unwrap();
         assert_eq!(string, "1.2");
 
-        let err = calculator.parse("abc".to_string()).unwrap_err();
+        let err = Float::parse("abc".to_string()).unwrap_err();
         assert!(matches!(
             err,
-            CalculatorError::DecimalFloatSelector(Err(selector))
+            FloatError::DecimalFloatSelector(Err(selector))
             if selector == fixed_bytes!("34bd2069")
         ));
     }
@@ -273,10 +260,8 @@ mod tests {
     proptest! {
         #[test]
         fn test_parse_format(float in reasonable_float()) {
-            let mut calculator = Calculator::new().unwrap();
-
-            let formatted = calculator.format(float).unwrap();
-            let parsed = calculator.parse(formatted.clone()).unwrap();
+            let formatted = float.format().unwrap();
+            let parsed = Float::parse(formatted.clone()).unwrap();
             prop_assert_eq!(float.0, parsed.0);
         }
     }
@@ -284,34 +269,28 @@ mod tests {
     proptest! {
         #[test]
         fn test_add(a in reasonable_float(), b in reasonable_float()) {
-            let mut calculator = Calculator::new().unwrap();
-
-            calculator.add(a, b).unwrap();
+            a.add(b).unwrap();
         }
     }
 
     proptest! {
         #[test]
         fn test_sub(a in reasonable_float(), b in reasonable_float()) {
-            let mut calculator = Calculator::new().unwrap();
-
-            calculator.sub(a, b).unwrap();
+            a.sub(b).unwrap();
         }
     }
 
     proptest! {
         #[test]
         fn test_add_sub(a in reasonable_float(), b in reasonable_float()) {
-            let mut calculator = Calculator::new().unwrap();
-
-            let sum = calculator.add(a, b).unwrap();
-            let diff = calculator.sub(sum, b).unwrap();
+            let sum = a.add(b).unwrap();
+            let diff = sum.sub(b).unwrap();
             prop_assert_eq!(
-                calculator.format(a).unwrap(),
-                calculator.format(diff).unwrap(),
+                a.format().unwrap(),
+                diff.format().unwrap(),
                 "a: {}, b: {}",
-                calculator.format(a).unwrap(),
-                calculator.format(b).unwrap(),
+                a.format().unwrap(),
+                b.format().unwrap(),
             );
         }
     }

From 0a7c1b7638a65c79018da8df31c0a2a1ee6b5721 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Fri, 13 Jun 2025 16:59:47 +0400
Subject: [PATCH 26/28] update parse test

---
 crates/float/src/lib.rs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index cbccb6c7..4594b4bf 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -245,9 +245,12 @@ mod tests {
 
     #[test]
     fn test_parse_edge_cases() {
-        let float = Float::parse("1.2.3".to_string()).unwrap();
-        let string = float.format().unwrap();
-        assert_eq!(string, "1.2");
+        let err = Float::parse("1.2.3".to_string()).unwrap_err();
+        assert!(matches!(
+            err,
+            FloatError::DecimalFloatSelector(Err(selector))
+            if selector == fixed_bytes!("ad384e87")
+        ));
 
         let err = Float::parse("abc".to_string()).unwrap_err();
         assert!(matches!(

From c298fa787fe47998ce8f234fa64d9a4bc3b5d063 Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Fri, 13 Jun 2025 17:18:20 +0400
Subject: [PATCH 27/28] make clippy happy

---
 crates/float/Cargo.toml | 16 +++++++++++++---
 crates/float/src/lib.rs | 21 +++++++++++++++------
 2 files changed, 28 insertions(+), 9 deletions(-)

diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index ae7dd845..3a95a16f 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -7,14 +7,24 @@ homepage.workspace = true
 
 [dependencies]
 alloy.workspace = true
-once_cell = "1.21.3"
+once_cell.workspace = true
 thiserror.workspace = true
 
 [target.'cfg(not(target_family = "wasm"))'.dependencies]
-revm = { workspace = true, features = ["c-kzg", "portable", "std", "tracer"] }
+revm = { workspace = true, default-features = false, features = [
+    "c-kzg",
+    "portable",
+    "std",
+    "tracer",
+] }
 
 [target.'cfg(target_family = "wasm")'.dependencies]
-revm = { workspace = true, features = ["kzg-rs", "portable", "std", "tracer"] }
+revm = { workspace = true, default-features = false, features = [
+    "kzg-rs",
+    "portable",
+    "std",
+    "tracer",
+] }
 getrandom = { version = "0.2.11", features = ["js", "js-sys"] }
 
 [dev-dependencies]
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 4594b4bf..14ebf7c4 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -13,6 +13,7 @@ use revm::interpreter::interpreter::EthInterpreter;
 use revm::primitives::{address, fixed_bytes};
 use revm::{Context, MainBuilder, MainContext, SystemCallEvm};
 use std::cell::RefCell;
+use std::ops::{Add, Sub};
 use std::thread::AccessError;
 use thiserror::Error;
 
@@ -177,8 +178,12 @@ impl Float {
             Ok(decoded)
         })
     }
+}
+
+impl Add for Float {
+    type Output = Result<Self, FloatError>;
 
-    pub fn add(self, b: Self) -> Result<Self, FloatError> {
+    fn add(self, b: Self) -> Self::Output {
         let Float(a) = self;
         let Float(b) = b;
         let calldata = DecimalFloat::addCall { a, b }.abi_encode();
@@ -188,8 +193,12 @@ impl Float {
             Ok(Float(decoded))
         })
     }
+}
+
+impl Sub for Float {
+    type Output = Result<Self, FloatError>;
 
-    pub fn sub(self: Self, b: Self) -> Result<Self, FloatError> {
+    fn sub(self, b: Self) -> Self::Output {
         let Float(a) = self;
         let Float(b) = b;
         let calldata = DecimalFloat::subCall { a, b }.abi_encode();
@@ -272,22 +281,22 @@ mod tests {
     proptest! {
         #[test]
         fn test_add(a in reasonable_float(), b in reasonable_float()) {
-            a.add(b).unwrap();
+            (a + b).unwrap();
         }
     }
 
     proptest! {
         #[test]
         fn test_sub(a in reasonable_float(), b in reasonable_float()) {
-            a.sub(b).unwrap();
+            (a - b).unwrap();
         }
     }
 
     proptest! {
         #[test]
         fn test_add_sub(a in reasonable_float(), b in reasonable_float()) {
-            let sum = a.add(b).unwrap();
-            let diff = sum.sub(b).unwrap();
+            let sum = (a + b).unwrap();
+            let diff = (sum - b).unwrap();
             prop_assert_eq!(
                 a.format().unwrap(),
                 diff.format().unwrap(),

From dbe108f385b3c799cb130822a9545b664afeaa2f Mon Sep 17 00:00:00 2001
From: 0xgleb <gleb.dianov@protonmail.com>
Date: Fri, 13 Jun 2025 17:30:09 +0400
Subject: [PATCH 28/28] rm once_cell

---
 Cargo.lock              | 1 -
 Cargo.toml              | 1 -
 crates/float/Cargo.toml | 1 -
 crates/float/src/lib.rs | 5 ++---
 4 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 888f2386..00365697 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3166,7 +3166,6 @@ version = "0.1.0"
 dependencies = [
  "alloy",
  "getrandom 0.2.16",
- "once_cell",
  "proptest",
  "revm",
  "thiserror",
diff --git a/Cargo.toml b/Cargo.toml
index 0373588a..06950bff 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,4 +17,3 @@ revm = { version = "25.0.0", default-features = false, features = [
 ] }
 thiserror = "2.0.12"
 proptest = "1.7.0"
-once_cell = "1.21.3"
diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index 3a95a16f..e1e3cf1b 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -7,7 +7,6 @@ homepage.workspace = true
 
 [dependencies]
 alloy.workspace = true
-once_cell.workspace = true
 thiserror.workspace = true
 
 [target.'cfg(not(target_family = "wasm"))'.dependencies]
diff --git a/crates/float/src/lib.rs b/crates/float/src/lib.rs
index 14ebf7c4..a8cbcbe0 100644
--- a/crates/float/src/lib.rs
+++ b/crates/float/src/lib.rs
@@ -3,7 +3,6 @@ use alloy::primitives::aliases::I224;
 use alloy::primitives::{Address, Bytes, FixedBytes};
 use alloy::sol_types::{SolError, SolInterface};
 use alloy::{sol, sol_types::SolCall};
-use once_cell::unsync::Lazy;
 use revm::context::result::{EVMError, ExecutionResult, HaltReason, Output, SuccessReason};
 use revm::context::{BlockEnv, CfgEnv, Evm, TxEnv};
 use revm::database::InMemoryDB;
@@ -27,7 +26,7 @@ type EvmContext = Context<BlockEnv, TxEnv, CfgEnv, InMemoryDB>;
 type LocalEvm = Evm<EvmContext, (), EthInstructions<EthInterpreter, EvmContext>, EthPrecompiles>;
 
 thread_local! {
-    static LOCAL_EVM: Lazy<RefCell<LocalEvm>> = Lazy::new(|| {
+    static LOCAL_EVM: RefCell<LocalEvm> = {
         let mut db = InMemoryDB::default();
         let bytecode = revm::state::Bytecode::new_legacy(DecimalFloat::DEPLOYED_BYTECODE.clone());
         let account_info = revm::state::AccountInfo::default().with_code(bytecode);
@@ -35,7 +34,7 @@ thread_local! {
 
         let evm = Context::mainnet().with_db(db).build_mainnet();
         RefCell::new(evm)
-    });
+    };
 }
 
 use DecimalFloat::DecimalFloatErrors;