patch.diff

diff --git a/i18n/KillDeathBusiness/ja_jp.yml b/i18n/KillDeathBusiness/ja_jp.yml
--- a/i18n/KillDeathBusiness/ja_jp.yml
+++ b/i18n/KillDeathBusiness/ja_jp.yml
@@ -1257,7 +1257,7 @@ ja_jp:
             会場ではウケたようだが、ヘル山くんは気に入らなかったようだ。
             座布団を1枚没収する。
           6: |-
-            「いやぁ面白い回答でした！　座布団を差し上げます、いーちにーい……ところで今、視聴率何%でしたっけ？」
+            「いやぁ面白い回答でした！　座布団を差し上げます、いーちにーい……ところで今、視聴率何％でしたっけ？」
             視聴率の確認に乗じて座布団の枚数を誤魔化される。
             座布団の枚数を%{size}枚増減させる。
       NOT:
diff --git a/lib/bcdice/arithmetic/node.rb b/lib/bcdice/arithmetic/node.rb
--- a/lib/bcdice/arithmetic/node.rb
+++ b/lib/bcdice/arithmetic/node.rb
@@ -48,6 +48,8 @@ module BCDice
         def eval(round_type)
           l = @lhs.eval(round_type)
           r = @rhs.eval(round_type)
+
+          raise ZeroDivisionError if r == 0
           divide_and_round(l, r, round_type)
         end
 
@@ -101,9 +103,10 @@ module BCDice
           when RoundType::CEIL
             (dividend.to_f / divisor).ceil
           when RoundType::ROUND
-            (dividend.to_f / divisor).round
+            x = dividend.to_f / divisor
+            x.negative? ? -(x.abs.round) : x.round
           else # RoundType::FLOOR
-            dividend / divisor
+            (dividend / divisor).floor
           end
         end
       end
@@ -138,7 +141,8 @@ module BCDice
         # @param [Symbol] _round_type ゲームシステムの端数処理設定
         # @return [Integer]
         def divide_and_round(dividend, divisor, _round_type)
-          (dividend.to_f / divisor).round
+          x = dividend.to_f / divisor
+          x.negative? ? -(x.abs.round) : x.round
         end
       end
 
@@ -155,7 +159,7 @@ module BCDice
         # @param [Symbol] _round_type ゲームシステムの端数処理設定
         # @return [Integer]
         def divide_and_round(dividend, divisor, _round_type)
-          dividend / divisor
+          (dividend / divisor).floor
         end
       end
 
diff --git a/lib/bcdice/base.rb b/lib/bcdice/base.rb
--- a/lib/bcdice/base.rb
+++ b/lib/bcdice/base.rb
@@ -20,8 +20,7 @@ module BCDice
       # 応答するコマンドのprefixを登録する
       # @param prefixes [Array<String>]
       def register_prefix(*prefixes)
-        @prefixes ||= []
-        @prefixes.concat(prefixes.flatten)
+        @prefixes = (@prefixes || []) + prefixes.flatten
       end
 
       def register_prefix_from_super_class
@@ -328,7 +327,7 @@ module BCDice
       num = @randomizer.roll_sum(count, 6)
       debug("num", num)
 
-      index = ((num - 1) / 2)
+      index = ((num - 1) / 2).to_i
       debug("index", index)
 
       text = table[index]
diff --git a/lib/bcdice/common_command/add_dice/node.rb b/lib/bcdice/common_command/add_dice/node.rb
--- a/lib/bcdice/common_command/add_dice/node.rb
+++ b/lib/bcdice/common_command/add_dice/node.rb
@@ -140,7 +140,7 @@ module BCDice
             lhs = @lhs.eval(game_system, randomizer)
             rhs = @rhs.eval(game_system, randomizer)
 
-            return calc(lhs, rhs, game_system.round_type)
+            return calc(lhs, rhs, game_system.round_type).to_i
           end
 
           # @return [Boolean]
@@ -177,7 +177,7 @@ module BCDice
           # @param _round_type [Symbol] ゲームシステムの端数処理設定
           # @return [Integer] 演算の結果
           def calc(lhs, rhs, _round_type)
-            lhs.send(@op, rhs)
+            lhs.send(@op, rhs).to_i
           end
 
           # S式で使う演算子の表現を返す
@@ -242,7 +242,7 @@ module BCDice
               return 1
             end
 
-            return divide_and_round(lhs, rhs, round_type)
+            return divide_and_round(lhs, rhs, round_type).to_i
           end
 
           # 除算および端数処理を行う
@@ -271,9 +271,10 @@ module BCDice
             when RoundType::CEIL
               (dividend.to_f / divisor).ceil
             when RoundType::ROUND
-              (dividend.to_f / divisor).round
+              x = dividend.to_f / divisor
+              x.negative? ? -(x.abs.round) : x.round
             else # RoundType::FLOOR
-              dividend / divisor
+              (dividend / divisor).floor
             end
           end
         end
@@ -304,7 +305,8 @@ module BCDice
           # @param (see DivideWithGameSystemDefault#divide_and_round)
           # @return [Integer]
           def divide_and_round(dividend, divisor, _round_type)
-            (dividend.to_f / divisor).round
+            x = dividend.to_f / divisor
+            x.negative? ? -(x.abs.round) : x.round
           end
         end
 
@@ -319,7 +321,7 @@ module BCDice
           # @param (see DivideWithGameSystemDefault#divide_and_round)
           # @return [Integer]
           def divide_and_round(dividend, divisor, _round_type)
-            dividend / divisor
+            (dividend / divisor).floor
           end
         end
 
@@ -342,7 +344,7 @@ module BCDice
           # @param [Randomizer] randomizer ランダマイザ
           # @return [Integer] 評価結果
           def eval(game_system, randomizer)
-            -@body.eval(game_system, randomizer)
+            -@body.eval(game_system, randomizer).to_i
           end
 
           # @return [Boolean]
@@ -398,7 +400,7 @@ module BCDice
             total = dice_list.sum()
             @text = "#{total}[#{dice_list.join(',')}]"
 
-            return total
+            return total.to_i
           end
 
           # @return [Boolean]
@@ -529,7 +531,7 @@ module BCDice
 
             @text = "#{total}[#{sorted_values.join(',')}]"
 
-            return total
+            return total.to_i
           end
 
           # @return [Boolean]
@@ -590,7 +592,7 @@ module BCDice
           # @param randomizer [Randomizer]
           # @return [integer]
           def eval(game_system, randomizer)
-            @expr.eval(game_system, randomizer)
+            @expr.eval(game_system, randomizer).to_i
           end
 
           # @return [Boolean]
@@ -623,7 +625,7 @@ module BCDice
           # ノードを初期化する
           # @param [Integer] literal 値
           def initialize(literal)
-            @literal = literal
+            @literal = literal.to_i
           end
 
           # 符号を反転した結果の数値ノードを返す
@@ -635,7 +637,7 @@ module BCDice
           # ノードを評価する
           # @return [Integer] 格納している値
           def eval(_game_system, _randomizer)
-            @literal
+            @literal.to_i
           end
 
           # @return [Boolean]
diff --git a/lib/bcdice/common_command/calc/node.rb b/lib/bcdice/common_command/calc/node.rb
--- a/lib/bcdice/common_command/calc/node.rb
+++ b/lib/bcdice/common_command/calc/node.rb
@@ -15,7 +15,7 @@ module BCDice
           def eval(round_type)
             value =
               begin
-                @expr.eval(round_type)
+                @expr.eval(round_type).to_i
               rescue ZeroDivisionError
                 "ゼロ除算が発生したため計算できませんでした"
               end
diff --git a/lib/bcdice/common_command/repeat.rb b/lib/bcdice/common_command/repeat.rb
--- a/lib/bcdice/common_command/repeat.rb
+++ b/lib/bcdice/common_command/repeat.rb
@@ -68,7 +68,7 @@ module BCDice
           cmd.eval()
         end
 
-        if results.count(nil) == @times
+        if results.count { |i| i == nil } == @times
           return result_with_text("繰り返し対象のコマンドが実行できませんでした (#{@trailer})")
         end
 
diff --git a/lib/bcdice/dice_table/d66_table.rb b/lib/bcdice/dice_table/d66_table.rb
--- a/lib/bcdice/dice_table/d66_table.rb
+++ b/lib/bcdice/dice_table/d66_table.rb
@@ -37,7 +37,7 @@ module BCDice
         end
 
         key = dice[0] * 10 + dice[1]
-        chosen = @items[key]
+        chosen = @items[key] || @items[key.to_s]
         chosen = chosen.roll(randomizer) if chosen.respond_to?(:roll)
         RollResult.new(@name, key, chosen)
       end
diff --git a/lib/bcdice/game_system/Amadeus.rb b/lib/bcdice/game_system/Amadeus.rb
--- a/lib/bcdice/game_system/Amadeus.rb
+++ b/lib/bcdice/game_system/Amadeus.rb
@@ -101,7 +101,7 @@ module BCDice
               end
 
             if available_inga
-              inga = inga_table[dice - 1]
+              inga = inga_table[(dice - 1)]
               "#{total}_#{result}[#{dice}#{inga}]"
             else
               "#{total}_#{result}[#{dice}]"
diff --git a/lib/bcdice/game_system/ArknightsFan.rb b/lib/bcdice/game_system/ArknightsFan.rb
--- a/lib/bcdice/game_system/ArknightsFan.rb
+++ b/lib/bcdice/game_system/ArknightsFan.rb
@@ -157,9 +157,9 @@ module BCDice
       end
 
       def eval_orp(command)
-        m   = %r{^ORP(?'END'[-+*/\d]+)@(?'ORP'[-+*/\d]+)(?:\+D(?'DICE'[-+*/\d]+))?(?:\+T(?'TGT'[-+*/\d]+))?$}.match(command)
+        m   = %r{^ORP(?<END>[-+*/\d]+)@(?<ORP>[-+*/\d]+)(?:\+D(?<DICE>[-+*/\d]+))?(?:\+T(?<TGT>[-+*/\d]+))?$}.match(command)
         # D補正とT補正が逆順でも対応する
-        m ||= %r{^ORP(?'END'[-+*/\d]+)@(?'ORP'[-+*/\d]+)(?:\+T(?'TGT'[-+*/\d]+))?(?:\+D(?'DICE'[-+*/\d]+))?$}.match(command)
+        m ||= %r{^ORP(?<END>[-+*/\d]+)@(?<ORP>[-+*/\d]+)(?:\+T(?<TGT>[-+*/\d]+))?(?:\+D(?<DICE>[-+*/\d]+))?$}.match(command)
         return nil unless m
 
         endurance = Arithmetic.eval(m[:END], @round_type)
diff --git a/lib/bcdice/game_system/AssaultEngine.rb b/lib/bcdice/game_system/AssaultEngine.rb
--- a/lib/bcdice/game_system/AssaultEngine.rb
+++ b/lib/bcdice/game_system/AssaultEngine.rb
@@ -40,7 +40,7 @@ module BCDice
 
         if cmd.command.include?("AES") # SWAP初回
           total = @randomizer.roll_once(100) % 100 # 0-99
-          swap = (total % 10) * 10 + (total / 10)
+          swap = (total % 10) * 10 + (total / 10).floor
           r1 = judge(target, total)
           r2 = judge(target, swap)
           text = "(AES#{format00(target)}) ＞ #{r1.text} / スワップ#{r2.text}"
@@ -53,7 +53,7 @@ module BCDice
         else # リロール
           now = cmd.prefix_number
           die = @randomizer.roll_once(10) % 10 # 0-9
-          new1 = judge(target, (now / 10 * 10) + die)    # 1の位を振り直す
+          new1 = judge(target, ((now / 10).floor * 10) + die)    # 1の位を振り直す
           new2 = judge(target, now % 10 + die * 10)      # 10の位を振り直す
 
           text = "(#{format00(now)}AE#{format00(target)}) ＞ #{die} ＞ #{new1.text} / #{new2.text}"
@@ -78,7 +78,7 @@ module BCDice
       end
 
       def judge(target, total)
-        double = (total / 10) == (total % 10)
+        double = (total / 10).floor == (total % 10)
         total_text = format00(total)
         if total <= target
           double ? Result.critical("(#{total_text})クリティカル") : Result.success("(#{total_text})成功")
diff --git a/lib/bcdice/game_system/ChaosFlare.rb b/lib/bcdice/game_system/ChaosFlare.rb
--- a/lib/bcdice/game_system/ChaosFlare.rb
+++ b/lib/bcdice/game_system/ChaosFlare.rb
@@ -93,7 +93,7 @@ module BCDice
             return "因果表(#{num}) ＞ #{FATE_TABLE[num][0]}"
           end
 
-          dice1 = num / 10
+          dice1 = (num / 10).to_i
           dice2 = num % 10
           if !(1..6).include?(dice1) || !(1..6).include?(dice2)
             return nil
@@ -104,7 +104,7 @@ module BCDice
         end
 
         index1 = dice1
-        index2 = (dice2 / 2) - 1
+        index2 = (dice2 / 2).to_i - 1
         return "因果表(#{dice1}#{dice2}) ＞ #{FATE_TABLE[index1][index2]}"
       end
 
diff --git a/lib/bcdice/game_system/Chill.rb b/lib/bcdice/game_system/Chill.rb
--- a/lib/bcdice/game_system/Chill.rb
+++ b/lib/bcdice/game_system/Chill.rb
@@ -34,9 +34,9 @@ module BCDice
           Result.failure("失敗")
         elsif total >= (target * 0.9)
           Result.success("Ｌ成功")
-        elsif total >= (target / 2)
+        elsif total >= (target / 2).to_i
           Result.success("Ｍ成功")
-        elsif total >= (target / 10)
+        elsif total >= (target / 10).to_i
           Result.success("Ｈ成功")
         else
           Result.critical("Ｃ成功")
diff --git a/lib/bcdice/game_system/Chill3.rb b/lib/bcdice/game_system/Chill3.rb
--- a/lib/bcdice/game_system/Chill3.rb
+++ b/lib/bcdice/game_system/Chill3.rb
@@ -24,7 +24,7 @@ module BCDice
         return nil unless cmp_op == :<=
 
         # ゾロ目ならC-ResultかBotch
-        tens = (dice_total / 10) % 10
+        tens = (dice_total / 10).to_i % 10
         ones = dice_total % 10
 
         if tens == ones
@@ -38,7 +38,7 @@ module BCDice
             return Result.critical("Colossal Success")
           end
         elsif (total <= target) || (dice_total == 1) # 01は必ず成功
-          if total <= (target / 2)
+          if total <= (target / 2).to_i
             return Result.success("High Success")
           else
             return Result.success("Low Success")
diff --git a/lib/bcdice/game_system/ColossalHunter.rb b/lib/bcdice/game_system/ColossalHunter.rb
--- a/lib/bcdice/game_system/ColossalHunter.rb
+++ b/lib/bcdice/game_system/ColossalHunter.rb
@@ -72,24 +72,23 @@ module BCDice
         # 出力文の生成
         text = "(#{parsed}) ＞ #{dice}[#{dice_str}]#{Format.modifier(modify)} ＞ #{total}"
 
-        result = get_judge_result(dice, total, parsed)
+        result = get_judge_result(dice, total, parsed, text)
 
-        result.text = text + result.text
         return result
       end
 
       # 成否判定
-      def get_judge_result(dice, total, parsed)
+      def get_judge_result(dice, total, parsed, text)
         if dice <= 5
-          Result.fumble(" ＞ ファンブル")
+          Result.fumble(text + " ＞ ファンブル")
         elsif total >= 16
-          Result.critical(" ＞ クリティカル")
+          Result.critical(text + " ＞ クリティカル")
         elsif parsed.cmp_op.nil?
-          Result.new("")
+          Result.new(text)
         elsif total >= parsed.target_number
-          Result.success(" ＞ 成功")
+          Result.success(text + " ＞ 成功")
         else
-          Result.failure(" ＞ 失敗")
+          Result.failure(text + " ＞ 失敗")
         end
       end
 
diff --git a/lib/bcdice/game_system/Cthulhu.rb b/lib/bcdice/game_system/Cthulhu.rb
--- a/lib/bcdice/game_system/Cthulhu.rb
+++ b/lib/bcdice/game_system/Cthulhu.rb
@@ -170,7 +170,7 @@ module BCDice
 
       def compare(total, target, broken_number = 0)
         result = CompareResult.new(@locale)
-        target_special = (target * @special_percentage / 100).clamp(1, 100)
+        target_special = (target * @special_percentage / 100).to_i.clamp(1, 100)
 
         if (total <= target) && (total < 100)
           result.success = true
diff --git a/lib/bcdice/game_system/Cthulhu7th.rb b/lib/bcdice/game_system/Cthulhu7th.rb
--- a/lib/bcdice/game_system/Cthulhu7th.rb
+++ b/lib/bcdice/game_system/Cthulhu7th.rb
@@ -121,9 +121,9 @@ module BCDice
             ResultLevel.new(:critical)
           elsif total >= fumble
             ResultLevel.new(:fumble)
-          elsif total <= (difficulty / 5)
+          elsif total <= (difficulty / 5).to_i
             ResultLevel.new(:extreme_success)
-          elsif total <= (difficulty / 2)
+          elsif total <= (difficulty / 2).to_i
             ResultLevel.new(:hard_success)
           elsif total <= difficulty
             ResultLevel.new(:regular_success)
@@ -194,9 +194,9 @@ module BCDice
         if difficulty == 0
           difficulty = nil
         elsif difficulty_level == "H"
-          difficulty /= 2
+          difficulty = (difficulty / 2).to_i
         elsif difficulty_level == "E"
-          difficulty /= 5
+          difficulty = (difficulty / 5).to_i
         elsif difficulty_level == "C"
           difficulty = 0
         end
diff --git a/lib/bcdice/game_system/Cthulhu7th_ChineseTraditional.rb b/lib/bcdice/game_system/Cthulhu7th_ChineseTraditional.rb
--- a/lib/bcdice/game_system/Cthulhu7th_ChineseTraditional.rb
+++ b/lib/bcdice/game_system/Cthulhu7th_ChineseTraditional.rb
@@ -119,9 +119,9 @@ module BCDice
             ResultLevel.new(:critical)
           elsif total >= fumble
             ResultLevel.new(:fumble)
-          elsif total <= (difficulty / 5)
+          elsif total <= (difficulty / 5).floor
             ResultLevel.new(:extreme_success)
-          elsif total <= (difficulty / 2)
+          elsif total <= (difficulty / 2).floor
             ResultLevel.new(:hard_success)
           elsif total <= difficulty
             ResultLevel.new(:regular_success)
@@ -192,9 +192,9 @@ module BCDice
         if difficulty == 0
           difficulty = nil
         elsif difficulty_level == "H"
-          difficulty /= 2
+          difficulty = (difficulty / 2).floor
         elsif difficulty_level == "E"
-          difficulty /= 5
+          difficulty = (difficulty / 5).floor
         elsif difficulty_level == "C"
           difficulty = 0
         end
diff --git a/lib/bcdice/game_system/Cthulhu7th_ChineseTraditional/full_auto.rb b/lib/bcdice/game_system/Cthulhu7th_ChineseTraditional/full_auto.rb
--- a/lib/bcdice/game_system/Cthulhu7th_ChineseTraditional/full_auto.rb
+++ b/lib/bcdice/game_system/Cthulhu7th_ChineseTraditional/full_auto.rb
@@ -43,7 +43,7 @@ module BCDice
           broken_number = m[3].to_i
           bonus_dice_count = m[4].to_i
           stop_count = m[5]&.downcase || ""
-          bullet_set_count_cap = m[6]&.to_i || diff / 10
+          bullet_set_count_cap = m[6]&.to_i || (diff / 10).floor
 
           output = ""
 
@@ -55,8 +55,8 @@ module BCDice
           end
 
           # 如果設置的連射上限不合理則顯示注意
-          if (bullet_set_count_cap > diff / 10) && (diff > 39) && !m[6].nil?
-            bullet_set_count_cap = diff / 10
+          if (bullet_set_count_cap > (diff / 10).floor) && (diff > 39) && !m[6].nil?
+            bullet_set_count_cap = (diff / 10).floor
             output += "連射的彈藥數量上限為\[技能值÷10（取整）\]發，因此無法指定更高的數量。連射的彈藥數量更改為#{bullet_set_count_cap}發。\n"
           elsif (diff <= 39) && (bullet_set_count_cap > 3) && !m[6].nil?
             bullet_set_count_cap = 3
@@ -246,7 +246,7 @@ module BCDice
         end
 
         def get_set_of_bullet(diff, bullet_set_count_cap)
-          bullet_set_count = diff / 10
+          bullet_set_count = (diff / 10).floor
 
           if bullet_set_count_cap < bullet_set_count
             bullet_set_count = bullet_set_count_cap
@@ -260,7 +260,7 @@ module BCDice
         end
 
         def get_hit_bullet_count_base(diff, bullet_set_count)
-          hit_bullet_count_base = (bullet_set_count / 2)
+          hit_bullet_count_base = (bullet_set_count / 2).floor
 
           if (diff >= 1) && (diff < 30)
             hit_bullet_count_base = 1 # 技能值在29以下的最低值保障
diff --git a/lib/bcdice/game_system/Cthulhu7th_Korean.rb b/lib/bcdice/game_system/Cthulhu7th_Korean.rb
--- a/lib/bcdice/game_system/Cthulhu7th_Korean.rb
+++ b/lib/bcdice/game_system/Cthulhu7th_Korean.rb
@@ -110,8 +110,8 @@ module BCDice
       def getCheckResultText(total, diff, fumbleable = false)
         if total <= diff
           return "대성공" if total == 1
-          return "대단한 성공" if total <= (diff / 5)
-          return "어려운 성공" if total <= (diff / 2)
+          return "대단한 성공" if total <= (diff / 5).to_i
+          return "어려운 성공" if total <= (diff / 2).to_i
 
           return "보통 성공"
         end
@@ -302,7 +302,7 @@ module BCDice
           lost_bullet_count = bullet_count
         end
 
-        return hit_bullet_count, impale_bullet_count, lost_bullet_count
+        return hit_bullet_count.to_i, impale_bullet_count.to_i, lost_bullet_count.to_i
       end
 
       def getSuccessListImpaleBulletList(more_difficlty)
@@ -341,7 +341,7 @@ module BCDice
       end
 
       def getSetOfBullet(diff)
-        bullet_set_count = diff / 10
+        bullet_set_count = (diff / 10).to_i
 
         if (diff >= 1) && (diff < 10)
           bullet_set_count = 1 # 기능 수치가 9 이하일 때의 최저수치 보장 처리
@@ -351,7 +351,7 @@ module BCDice
       end
 
       def getHitBulletCountBase(diff, bullet_set_count)
-        hit_bullet_count_base = (bullet_set_count / 2)
+        hit_bullet_count_base = (bullet_set_count / 2).to_i
 
         if (diff >= 1) && (diff < 10)
           hit_bullet_count_base = 1 # 기능 수치가 9 이하일 때의 최저수치 보장
diff --git a/lib/bcdice/game_system/CthulhuTech.rb b/lib/bcdice/game_system/CthulhuTech.rb
--- a/lib/bcdice/game_system/CthulhuTech.rb
+++ b/lib/bcdice/game_system/CthulhuTech.rb
@@ -53,7 +53,7 @@ module BCDice
           dice_values = randomizer.roll_barabara(@num, 10)
 
           # ファンブル：出目の半分（小数点以下切り上げ）以上が1の場合
-          fumble = dice_values.count(1) >= (dice_values.length + 1) / 2
+          fumble = dice_values.count(1) >= ((dice_values.length + 1) / 2).to_i
 
           sorted_dice_values = dice_values.sort
           roll_result = calculate_roll_result(sorted_dice_values)
diff --git a/lib/bcdice/game_system/DemonSpike.rb b/lib/bcdice/game_system/DemonSpike.rb
--- a/lib/bcdice/game_system/DemonSpike.rb
+++ b/lib/bcdice/game_system/DemonSpike.rb
@@ -51,7 +51,7 @@ module BCDice
 
         is_fumble = step_list[0][:dice_sum] == 2
         total = is_fumble ? 0 : step_list.sum { |s| s[:dice_sum] } + parsed.modify_number
-        success_level = total / 10
+        success_level = (total / 10).floor
         is_success = total >= 10
 
         res =
diff --git a/lib/bcdice/game_system/Dracurouge.rb b/lib/bcdice/game_system/Dracurouge.rb
--- a/lib/bcdice/game_system/Dracurouge.rb
+++ b/lib/bcdice/game_system/Dracurouge.rb
@@ -89,7 +89,7 @@ module BCDice
         one_count = dice_list.count(1)
         six_count = dice_list.count(6)
 
-        return (one_count / 2) + (six_count / 2)
+        return (one_count / 2).to_i + (six_count / 2).to_i
       end
 
       def apply_thirsty_point(dice_list, thirsty_point)
@@ -273,7 +273,7 @@ module BCDice
           list = Array.new(times) do
             randomizer.roll_barabara(sides.length, 6)
                       .reverse # テスト系の互換性のために反転する
-                      .map.with_index { |x, idx| x * (10**idx) }
+                      .map.with_index { |x, idx| x * (10**idx).to_i }
                       .sum()
           end
 
diff --git a/lib/bcdice/game_system/EarthDawn3.rb b/lib/bcdice/game_system/EarthDawn3.rb
--- a/lib/bcdice/game_system/EarthDawn3.rb
+++ b/lib/bcdice/game_system/EarthDawn3.rb
@@ -147,7 +147,7 @@ module BCDice
 
         result = [0, 0, 0, 0, 0, 0, 0]
 
-        loopCount = (overStep / stepRythm.size)
+        loopCount = (overStep / stepRythm.size).to_i
 
         loopCount.times do
           addStepToResult(result, baseStepInfo)
diff --git a/lib/bcdice/game_system/EarthDawn4.rb b/lib/bcdice/game_system/EarthDawn4.rb
--- a/lib/bcdice/game_system/EarthDawn4.rb
+++ b/lib/bcdice/game_system/EarthDawn4.rb
@@ -193,7 +193,7 @@ module BCDice
 
         result = [0, 0, 0, 0, 0, 0, 0]
 
-        loopCount = (overStep / stepRythm.size)
+        loopCount = (overStep / stepRythm.size).to_i
 
         loopCount.times do
           addStepToResult(result, overBounusStep)
@@ -225,7 +225,7 @@ module BCDice
           return "失敗"
         end
 
-        level = (diff / 5) + 1
+        level = (diff / 5).to_i + 1
 
         return "成功 レベル：#{level}"
       end
diff --git a/lib/bcdice/game_system/EclipsePhase.rb b/lib/bcdice/game_system/EclipsePhase.rb
--- a/lib/bcdice/game_system/EclipsePhase.rb
+++ b/lib/bcdice/game_system/EclipsePhase.rb
@@ -21,7 +21,7 @@ module BCDice
         return nil unless cmp_op == :<=
 
         dice_value = total % 100 # 出目00は100ではなく00とする
-        dice_ten_place = dice_value / 10
+        dice_ten_place = (dice_value / 10).to_i
         dice_one_place = dice_value % 10
 
         if dice_ten_place == dice_one_place
diff --git a/lib/bcdice/game_system/Emoklore.rb b/lib/bcdice/game_system/Emoklore.rb
--- a/lib/bcdice/game_system/Emoklore.rb
+++ b/lib/bcdice/game_system/Emoklore.rb
@@ -65,7 +65,7 @@ module BCDice
         success_value = critical + success - fumble
         result = compare_result(success_value)
 
-        result.text = "#{values} ＞ #{success_value} ＞ #{translate('Emoklore.success_count', count: success_value)} #{result.text}"
+        result.text = "[#{values.join(', ')}] ＞ #{success_value} ＞ #{translate('Emoklore.success_count', count: success_value)} #{result.text}"
         return result
       end
 
diff --git a/lib/bcdice/game_system/Garactier.rb b/lib/bcdice/game_system/Garactier.rb
--- a/lib/bcdice/game_system/Garactier.rb
+++ b/lib/bcdice/game_system/Garactier.rb
@@ -433,7 +433,7 @@ module BCDice
           elsif fumble
             Result.fumble("ファンブル")
           else
-            success_level = (total - 4) / 2
+            success_level = ((total - 4) / 2).floor
             if success_level >= 11
               success_level = 11
             elsif success_level <= 0
diff --git a/lib/bcdice/game_system/GardenOrder.rb b/lib/bcdice/game_system/GardenOrder.rb
--- a/lib/bcdice/game_system/GardenOrder.rb
+++ b/lib/bcdice/game_system/GardenOrder.rb
@@ -66,12 +66,12 @@ module BCDice
       def get_critical_border(critical_border_text, success_rate)
         return critical_border_text.to_i unless critical_border_text.nil?
 
-        critical_border = [success_rate / 5, 1].max
+        critical_border = [success_rate / 5, 1].max.to_i
         return critical_border
       end
 
       def check_roll_repeat_attack(success_rate, repeat_count, critical_border)
-        success_rate_per_one = success_rate / repeat_count
+        success_rate_per_one = (success_rate / repeat_count).to_i
         # 連続攻撃は最終的な成功率が50%以上であることが必要 cf. p217
         if repeat_count > 1 && success_rate_per_one < 50
           return "D100<=#{success_rate_per_one}@#{critical_border} ＞ 連続攻撃は成功率が50％以上必要です"
diff --git a/lib/bcdice/game_system/Gundog.rb b/lib/bcdice/game_system/Gundog.rb
--- a/lib/bcdice/game_system/Gundog.rb
+++ b/lib/bcdice/game_system/Gundog.rb
@@ -34,7 +34,7 @@ module BCDice
         elsif target == "?"
           Result.nothing
         elsif total <= target
-          dig10 = total / 10
+          dig10 = (total / 10).to_i
           dig1 = total - dig10 * 10
           dig10 = 0 if dig10 >= 10
           dig1 = 0 if dig1 >= 10 # 条件的にはあり得ない(笑
diff --git a/lib/bcdice/game_system/GundogRevised.rb b/lib/bcdice/game_system/GundogRevised.rb
--- a/lib/bcdice/game_system/GundogRevised.rb
+++ b/lib/bcdice/game_system/GundogRevised.rb
@@ -45,7 +45,7 @@ module BCDice
         elsif target == "?"
           Result.nothing
         elsif total <= target
-          dig10 = total / 10
+          dig10 = (total / 10).to_i
           dig1 = total - dig10 * 10
           dig10 = 0 if dig10 >= 10
           dig1 = 0 if dig1 >= 10 # 条件的にはあり得ない(笑
diff --git a/lib/bcdice/game_system/GurpsFW.rb b/lib/bcdice/game_system/GurpsFW.rb
--- a/lib/bcdice/game_system/GurpsFW.rb
+++ b/lib/bcdice/game_system/GurpsFW.rb
@@ -321,7 +321,7 @@ module BCDice
           tableName = "財宝テーブル"
           diff = Regexp.last_match(1)
           depth = Regexp.last_match(2).to_i
-          num = depth / 10
+          num = (depth / 10).to_i
           if num >= 6
             num = 5
           end
diff --git a/lib/bcdice/game_system/HeroScale.rb b/lib/bcdice/game_system/HeroScale.rb
--- a/lib/bcdice/game_system/HeroScale.rb
+++ b/lib/bcdice/game_system/HeroScale.rb
@@ -159,11 +159,13 @@ module BCDice
 
       def fate_body(natural_result)
         modified_result = natural_result.dup
-        modified_result.each do |result|
-          if result == 4
-            modified_result << @randomizer.roll_once(4)
-          end
+        additional = natural_result.count(4)
+        while additional > 0
+          value = @randomizer.roll_once(4)
+          modified_result.push(value)
+          additional -= 1 if value != 4
         end
+
         subtotal = results_multiplication(natural_result)
         total = results_multiplication(modified_result)
         message = "肉体の超越 ＞ #{subtotal}[#{natural_result.join(',')}] ＞ #{total}[#{modified_result.join(',')}]"
@@ -297,7 +299,7 @@ module BCDice
       def fate_acceptance(natural_result, order)
         subtotal = results_multiplication(natural_result)
         if order.length > 3 && order[2] =~ /^\d+$/ && order[3] =~ /^\d+$/
-          change_result = natural_result.min(2)
+          change_result = natural_result.sort().take(2)
           modified_result = natural_result.dup
           modified_result[modified_result.index(change_result[0])] = order[2].to_i
           modified_result[modified_result.index(change_result[1])] = order[3].to_i
@@ -460,7 +462,7 @@ module BCDice
         subtotal = results_multiplication(natural_result)
         modified_result = natural_result.dup
         depravity_num1 = natural_result[0] % 10
-        depravity_num10 = natural_result[0] / 10
+        depravity_num10 = (natural_result[0] / 10).to_i
         if depravity_num10 > 1
           modified_result << depravity_num10
         end
@@ -476,7 +478,7 @@ module BCDice
         modified_result = natural_result.dup
         modified_result << @randomizer.roll_once(60)
         subtotal = results_multiplication(natural_result)
-        total = results_multiplication(modified_result) / 2
+        total = (results_multiplication(modified_result) / 2).to_i
         message = "忘却の報い ＞ #{subtotal}[#{natural_result.join(',')}] ＞ #{total}[#{modified_result.join(',')}]"
         return message
       end
@@ -827,9 +829,9 @@ module BCDice
 
       def result_raoundup(result)
         if result.even?
-          return result / 2
+          return (result / 2).to_i
         else
-          return result / 2 + 1
+          return (result / 2).to_i + 1
         end
       end
     end
diff --git a/lib/bcdice/game_system/Hieizan.rb b/lib/bcdice/game_system/Hieizan.rb
--- a/lib/bcdice/game_system/Hieizan.rb
+++ b/lib/bcdice/game_system/Hieizan.rb
@@ -24,7 +24,7 @@ module BCDice
           Result.fumble("大失敗")
         elsif total >= 96
           Result.failure("自動失敗")
-        elsif total <= (target / 5)
+        elsif total <= (target / 5).to_i
           Result.critical("大成功")
         elsif total <= 1
           Result.success("自動成功")
diff --git a/lib/bcdice/game_system/HunterTheReckoning5th.rb b/lib/bcdice/game_system/HunterTheReckoning5th.rb
--- a/lib/bcdice/game_system/HunterTheReckoning5th.rb
+++ b/lib/bcdice/game_system/HunterTheReckoning5th.rb
@@ -141,7 +141,7 @@ module BCDice
 
       def get_critical_success(ten_dice)
         # 10の目が2個毎に追加2成功
-        return ((ten_dice / 2) * 2)
+        return ((ten_dice / 2).to_i * 2)
       end
 
       def make_dice_roll(dice_pool)
diff --git a/lib/bcdice/game_system/InfiniteFantasia.rb b/lib/bcdice/game_system/InfiniteFantasia.rb
--- a/lib/bcdice/game_system/InfiniteFantasia.rb
+++ b/lib/bcdice/game_system/InfiniteFantasia.rb
@@ -28,15 +28,15 @@ module BCDice
         end
 
         output =
-          if total <= (target / 32)
+          if total <= (target / 32).to_i
             "32レベル成功(32Lv+)"
-          elsif total <= (target / 16)
+          elsif total <= (target / 16).to_i
             "16レベル成功(16Lv+)"
-          elsif total <= (target / 8)
+          elsif total <= (target / 8).to_i
             "8レベル成功"
-          elsif total <= (target / 4)
+          elsif total <= (target / 4).to_i
             "4レベル成功"
-          elsif total <= (target / 2)
+          elsif total <= (target / 2).to_i
             "2レベル成功"
           else
             "1レベル成功"
diff --git a/lib/bcdice/game_system/KemonoNoMori.rb b/lib/bcdice/game_system/KemonoNoMori.rb
--- a/lib/bcdice/game_system/KemonoNoMori.rb
+++ b/lib/bcdice/game_system/KemonoNoMori.rb
@@ -71,7 +71,7 @@ module BCDice
 
         # 行為判定の成功度は [目標値の10の位の数+1]
         # 継続判定の成功度は固定で+1
-        success_degree = is_action_judge ? target_total / 10 + 1 : 1
+        success_degree = is_action_judge ? (target_total / 10).to_i + 1 : 1
 
         dice_total = @randomizer.roll_once(12)
         debug('dice_total, target_total, success_degree = ', dice_total, target_total, success_degree)
diff --git a/lib/bcdice/game_system/LogHorizon.rb b/lib/bcdice/game_system/LogHorizon.rb
--- a/lib/bcdice/game_system/LogHorizon.rb
+++ b/lib/bcdice/game_system/LogHorizon.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require "bcdice/base"
+require "bcdice/arithmetic_evaluator"
 
 module BCDice
   module GameSystem
@@ -361,13 +362,13 @@ module BCDice
           if index <= 6
             translate("LogHorizon.TRS.below_lower_limit", value: 6) # 6以下の出目は未定義です
           elsif index <= 62
-            @items[index]
+            @items[index.to_s]
           elsif index <= 72
-            "#{@items[index - 10]}&80G"
+            "#{@items[(index - 10).to_s]}&80G"
           elsif index <= 82
-            "#{@items[index - 20]}&160G"
+            "#{@items[(index - 20).to_s]}&160G"
           elsif index <= 87
-            "#{@items[index - 30]}&260G"
+            "#{@items[(index - 30).to_s]}&260G"
           else
             translate("LogHorizon.TRS.exceed_upper_limit", value: 88) # 88以上の出目は未定義です
           end
@@ -382,7 +383,7 @@ module BCDice
           if index <= 6
             translate("LogHorizon.TRS.below_lower_limit", value: 6)
           elsif index <= 53
-            @items[index]
+            @items[index.to_s]
           else
             translate("LogHorizon.TRS.exceed_upper_limit", value: 54)
           end
@@ -397,13 +398,13 @@ module BCDice
           if index <= 6
             translate("LogHorizon.TRS.below_lower_limit", value: 6)
           elsif index <= 162
-            @items[index]
+            @items[index.to_s]
           elsif index <= 172
-            "#{@items[index - 10]}&200G"
+            "#{@items[(index - 10).to_s]}&200G"
           elsif index <= 182
-            "#{@items[index - 20]}&400G"
+            "#{@items[(index - 20).to_s]}&400G"
           elsif index <= 187
-            "#{@items[index - 30]}&600G"
+            "#{@items[(index - 30).to_s]}&600G"
           else
             translate("LogHorizon.TRS.exceed_upper_limit", value: 188)
           end
@@ -512,7 +513,7 @@ module BCDice
 
         table_name = translate("LogHorizon.ESTL.name")
         table = translate("LogHorizon.ESTL.items")
-        chosen = table[total].chomp
+        chosen = table[total.to_s].chomp
 
         return "#{table_name}(#{total}#{dice_str})\n#{chosen}"
       end
diff --git a/lib/bcdice/game_system/NightmareHunterDeep.rb b/lib/bcdice/game_system/NightmareHunterDeep.rb
--- a/lib/bcdice/game_system/NightmareHunterDeep.rb
+++ b/lib/bcdice/game_system/NightmareHunterDeep.rb
@@ -81,8 +81,8 @@ module BCDice
           return total >= target ? "成功" : "失敗"
         end
 
-        success_lv = (total + 1) / 5
-        success_nl = (total - 5) / 5
+        success_lv = ((total + 1) / 5).to_i
+        success_nl = ((total - 5) / 5).to_i
 
         return success_lv > 0 ? "Lv#{success_lv}/NL#{success_nl}成功" : "失敗"
       end
diff --git a/lib/bcdice/game_system/NinjaSlayer.rb b/lib/bcdice/game_system/NinjaSlayer.rb
--- a/lib/bcdice/game_system/NinjaSlayer.rb
+++ b/lib/bcdice/game_system/NinjaSlayer.rb
@@ -50,18 +50,18 @@ module BCDice
       end
 
       # 難易度の値の正規表現
-      DIFFICULTY_VALUE_RE = /UH|[2-6KENH]/i.freeze
+      DIFFICULTY_VALUE_RE = 'UH|[2-6KENH]'.freeze
       # 難易度の正規表現
-      DIFFICULTY_RE = /\[(#{DIFFICULTY_VALUE_RE})\]|@(#{DIFFICULTY_VALUE_RE})/io.freeze
+      DIFFICULTY_RE = "(\\[(#{DIFFICULTY_VALUE_RE})\\]|@(#{DIFFICULTY_VALUE_RE}))".freeze
 
       # 通常判定の正規表現
-      NJ_RE = /\A(S)?NJ(\d+)#{DIFFICULTY_RE}?\z/io.freeze
+      NJ_RE = /^(S)?NJ(\d+)#{DIFFICULTY_RE}?$/io.freeze
       # 回避判定の正規表現
-      EV_RE = %r{\AEV(\d+)#{DIFFICULTY_RE}?(?:/(\d+))?\z}io.freeze
+      EV_RE = /^EV(\d+)#{DIFFICULTY_RE}?(?:\/(\d+))?$/io.freeze
       # 近接攻撃の正規表現
-      AT_RE = /\AAT(\d+)#{DIFFICULTY_RE}?\z/io.freeze
+      AT_RE = /^AT(\d+)#{DIFFICULTY_RE}?$/io.freeze
       # 電子戦の正規表現
-      EL_RE = /\AEL(\d+)#{DIFFICULTY_RE}?\z/io.freeze
+      EL_RE = /^EL(\d+)#{DIFFICULTY_RE}?$/io.freeze
 
       # 回避判定のノード
       EV = Struct.new(:num, :difficulty, :targetValue)
@@ -83,7 +83,7 @@ module BCDice
         m = NJ_RE.match(str)
         return str unless m
 
-        b_roll = bRollCommand(m[2], integerValueOfDifficulty(m[3] || m[4]))
+        b_roll = bRollCommand(m[2], integerValueOfDifficulty(m[4] || m[5]))
         return "#{m[1]}#{b_roll}"
       end
 
@@ -129,8 +129,8 @@ module BCDice
       # @return [EV]
       def parseEV(m)
         num = m[1].to_i
-        difficulty = integerValueOfDifficulty(m[2] || m[3])
-        targetValue = m[4]&.to_i
+        difficulty = integerValueOfDifficulty(m[3] || m[4])
+        targetValue = m[5]&.to_i
 
         return EV.new(num, difficulty, targetValue)
       end
@@ -140,7 +140,7 @@ module BCDice
       # @return [AT]
       def parseAT(m)
         num = m[1].to_i
-        difficulty = integerValueOfDifficulty(m[2] || m[3])
+        difficulty = integerValueOfDifficulty(m[3] || m[4])
 
         return AT.new(num, difficulty)
       end
@@ -150,7 +150,7 @@ module BCDice
       # @return [EL]
       def parseEL(m)
         num = m[1].to_i
-        difficulty = integerValueOfDifficulty(m[2] || m[3])
+        difficulty = integerValueOfDifficulty(m[3] || m[4])
 
         return EL.new(num, difficulty)
       end
@@ -220,7 +220,7 @@ module BCDice
       def integerValueOfDifficulty(s)
         return 4 unless s
 
-        return s.to_i if /\A[2-6]\z/.match(s)
+        return s.to_i if /^[2-6]$/.match(s)
 
         return DIFFICULTY_SYMBOL_TO_INTEGER.fetch(s.upcase)
       end
diff --git a/lib/bcdice/game_system/RuinBreakers.rb b/lib/bcdice/game_system/RuinBreakers.rb
--- a/lib/bcdice/game_system/RuinBreakers.rb
+++ b/lib/bcdice/game_system/RuinBreakers.rb
@@ -67,8 +67,8 @@ module BCDice
           return nil
         end
 
-        success_rate = ArithmeticEvaluator.eval(m[1])
-        critical_border = m[4]&.to_i || [success_rate / 5, 1].max
+        success_rate = ArithmeticEvaluator.eval(m[1]).to_i
+        critical_border = m[4]&.to_i || [(success_rate / 5).to_i, 1].max
         fumble_border = m[6]&.to_i || (success_rate < 100 ? 96 : 99)
 
         total = @randomizer.roll_once(100)
diff --git a/lib/bcdice/game_system/RuneQuestRoleplayingInGlorantha.rb b/lib/bcdice/game_system/RuneQuestRoleplayingInGlorantha.rb
--- a/lib/bcdice/game_system/RuneQuestRoleplayingInGlorantha.rb
+++ b/lib/bcdice/game_system/RuneQuestRoleplayingInGlorantha.rb
@@ -138,7 +138,7 @@ module BCDice
           Result.success("#{result_prefix_str} 成功\n#{note_str}")
         else
           # 上記全てが当てはまらない時に突破可能な能力値を算出
-          "#{result_prefix_str} 相手側能力値#{active_ability_value + (50 + modifiy_value - roll_value) / 5}まで成功\n#{note_str}"
+          "#{result_prefix_str} 相手側能力値#{active_ability_value + ((50 + modifiy_value - roll_value) / 5).floor}まで成功\n#{note_str}"
         end
       end
 
diff --git a/lib/bcdice/game_system/Ryutama.rb b/lib/bcdice/game_system/Ryutama.rb
--- a/lib/bcdice/game_system/Ryutama.rb
+++ b/lib/bcdice/game_system/Ryutama.rb
@@ -86,14 +86,14 @@ module BCDice
 
         diceBase = dice1
 
-        dice1 = diceBase / 10
+        dice1 = (diceBase / 10).to_i
         dice2 = diceBase % 10
 
         if isValidDice(dice1, dice2)
           return dice1, dice2
         end
 
-        dice1 = diceBase / 100
+        dice1 = (diceBase / 100).to_i
         dice2 = diceBase % 100
 
         if isValidDice(dice1, dice2)
diff --git a/lib/bcdice/game_system/ShinMegamiTenseiKakuseihen.rb b/lib/bcdice/game_system/ShinMegamiTenseiKakuseihen.rb
--- a/lib/bcdice/game_system/ShinMegamiTenseiKakuseihen.rb
+++ b/lib/bcdice/game_system/ShinMegamiTenseiKakuseihen.rb
@@ -45,7 +45,7 @@ module BCDice
       def split_tens(value)
         value %= 100
 
-        ones = value / 10
+        ones = (value / 10).to_i
         tens = value % 10
 
         return [ones, tens]
diff --git a/lib/bcdice/game_system/Siren.rb b/lib/bcdice/game_system/Siren.rb
--- a/lib/bcdice/game_system/Siren.rb
+++ b/lib/bcdice/game_system/Siren.rb
@@ -50,7 +50,7 @@ module BCDice
           return Result.failure("(1D100<=#{target}) ＞ #{dice} ＞ 失敗")
         end
 
-        dig10 = dice / 10
+        dig10 = (dice / 10).floor
         dig1 = dice % 10
         if dig10 == 0
           dig10 = 10
@@ -74,7 +74,7 @@ module BCDice
 
         dice = @randomizer.roll_once(100)
 
-        dig10 = dice / 10
+        dig10 = (dice / 10).floor
         dig1 = dice % 10
         if dig10 == 0
           dig10 = 10
diff --git a/lib/bcdice/game_system/Skynauts.rb b/lib/bcdice/game_system/Skynauts.rb
--- a/lib/bcdice/game_system/Skynauts.rb
+++ b/lib/bcdice/game_system/Skynauts.rb
@@ -78,7 +78,7 @@ module BCDice
         debug("移動修正", bonus)
 
         total = @randomizer.roll_once(6)
-        move_point_base = (total / 2) <= 0 ? 1 : (total / 2)
+        move_point_base = (total / 2).to_i <= 0 ? 1 : (total / 2).to_i
         movePoint = move_point_base + bonus
         debug("移動エリア数", movePoint)
 
diff --git a/lib/bcdice/game_system/TensaiGunshiNiNaro.rb b/lib/bcdice/game_system/TensaiGunshiNiNaro.rb
--- a/lib/bcdice/game_system/TensaiGunshiNiNaro.rb
+++ b/lib/bcdice/game_system/TensaiGunshiNiNaro.rb
@@ -216,7 +216,7 @@ module BCDice
         # ダメージ計算
         damage = @randomizer.roll_sum(parsed.prefix_number, 6) + parsed.modify_number
         # HP減少量計算
-        dec = damage / parsed.target_number
+        dec = (damage / parsed.target_number).floor
 
         # HP減少量の最大値は3
         dec = 3 if dec > 3
diff --git a/lib/bcdice/game_system/ToshiakiHolyGrailWar.rb b/lib/bcdice/game_system/ToshiakiHolyGrailWar.rb
--- a/lib/bcdice/game_system/ToshiakiHolyGrailWar.rb
+++ b/lib/bcdice/game_system/ToshiakiHolyGrailWar.rb
@@ -80,7 +80,7 @@ module BCDice
         if modifier <= 10
           0
         else
-          modifier / 10
+          (modifier / 10).to_i
         end
       end
 
diff --git a/lib/bcdice/game_system/TunnelsAndTrolls.rb b/lib/bcdice/game_system/TunnelsAndTrolls.rb
--- a/lib/bcdice/game_system/TunnelsAndTrolls.rb
+++ b/lib/bcdice/game_system/TunnelsAndTrolls.rb
@@ -253,7 +253,7 @@ module BCDice
       end
 
       def success_level(total, dice_total)
-        level = (total - 15) / 5
+        level = ((total - 15) / 5).to_i
         if level <= 0
           "失敗 ＞ 経験値#{dice_total}"
         else
diff --git a/lib/bcdice/game_system/VampireTheMasquerade5th.rb b/lib/bcdice/game_system/VampireTheMasquerade5th.rb
--- a/lib/bcdice/game_system/VampireTheMasquerade5th.rb
+++ b/lib/bcdice/game_system/VampireTheMasquerade5th.rb
@@ -169,7 +169,7 @@ module BCDice
 
       def get_critical_success(ten_dice)
         # 10の目が2個毎に追加2成功
-        return ((ten_dice / 2) * 2)
+        return ((ten_dice / 2).to_i * 2)
       end
 
       def make_dice_roll(dice_pool)
diff --git a/lib/bcdice/game_system/Villaciel.rb b/lib/bcdice/game_system/Villaciel.rb
--- a/lib/bcdice/game_system/Villaciel.rb
+++ b/lib/bcdice/game_system/Villaciel.rb
@@ -210,8 +210,8 @@ module BCDice
 
         roll_result1 = @randomizer.roll_once(D6)
         chart_text, roll_result2 = case chart_symbol
-                                   when 'V' then get_table_by_1d6(VILLACIEL_PREVIOUS_JOB_CHART[(roll_result1 - 1) / 3])
-                                   when 'A' then get_table_by_1d6(ARMESEAR_PREVIOUS_JOB_CHART[(roll_result1 - 1) / 2])
+                                   when 'V' then get_table_by_1d6(VILLACIEL_PREVIOUS_JOB_CHART[((roll_result1 - 1) / 3).to_i])
+                                   when 'A' then get_table_by_1d6(ARMESEAR_PREVIOUS_JOB_CHART[((roll_result1 - 1) / 2).to_i])
                                    end
 
         chart_title = case chart_symbol
@@ -278,7 +278,7 @@ module BCDice
                                                    when 6 then 3
                                                    end
                                      get_table_by_1d6(VILLACIEL_PETIT_QUEST_CHART[chart_index])
-                                   when 'A' then get_table_by_1d6(ARMESEAR_PETIT_QUEST_CHART[(roll_result1 - 1) / 2])
+                                   when 'A' then get_table_by_1d6(ARMESEAR_PETIT_QUEST_CHART[((roll_result1 - 1) / 2).to_i])
                                    end
 
         chart_title = case chart_symbol
diff --git a/lib/bcdice/game_system/Warhammer.rb b/lib/bcdice/game_system/Warhammer.rb
--- a/lib/bcdice/game_system/Warhammer.rb
+++ b/lib/bcdice/game_system/Warhammer.rb
@@ -56,9 +56,9 @@ module BCDice
         return nil unless cmp_op == :<=
 
         if total <= target
-          Result.success("成功(成功度#{(target - total) / 10})")
+          Result.success("成功(成功度#{((target - total) / 10).to_i})")
         else
-          Result.failure("失敗(失敗度#{(total - target) / 10})")
+          Result.failure("失敗(失敗度#{((total - target) / 10).to_i})")
         end
       end
 
diff --git a/lib/bcdice/game_system/Warhammer4.rb b/lib/bcdice/game_system/Warhammer4.rb
--- a/lib/bcdice/game_system/Warhammer4.rb
+++ b/lib/bcdice/game_system/Warhammer4.rb
@@ -62,8 +62,8 @@ module BCDice
         return Result.nothing if target == '?'
         return nil unless cmp_op == :<=
 
-        t10 = total / 10
-        d10 = target / 10
+        t10 = (total / 10).to_i
+        d10 = (target / 10).to_i
         sl = d10 - t10
 
         if total <= 5 && sl < 1
@@ -301,7 +301,7 @@ module BCDice
         if dice == 100
           return 0, 0
         else
-          return dice / 10, dice % 10
+          return (dice / 10).to_i, dice % 10
         end
       end
 
diff --git a/lib/bcdice/game_system/WerewolfTheApocalypse5th.rb b/lib/bcdice/game_system/WerewolfTheApocalypse5th.rb
--- a/lib/bcdice/game_system/WerewolfTheApocalypse5th.rb
+++ b/lib/bcdice/game_system/WerewolfTheApocalypse5th.rb
@@ -76,7 +76,7 @@ module BCDice
         if rage_dice_pool >= 0
           rage_dice_text, rage_success_dice, rage_ten_dice, brutal_result_dice = make_dice_roll(rage_dice_pool)
 
-          brutal_outcome = brutal_result_dice / 2
+          brutal_outcome = (brutal_result_dice / 2).floor
           ten_dice += rage_ten_dice
           success_dice += rage_success_dice
 
@@ -161,7 +161,7 @@ module BCDice
 
       def get_critical_success(ten_dice)
         # 10の目が2個毎に追加2成功
-        return ((ten_dice / 2) * 2)
+        return ((ten_dice / 2).floor * 2)
       end
 
       def make_dice_roll(dice_pool)
diff --git a/lib/bcdice/game_system/Yggdrasill.rb b/lib/bcdice/game_system/Yggdrasill.rb
--- a/lib/bcdice/game_system/Yggdrasill.rb
+++ b/lib/bcdice/game_system/Yggdrasill.rb
@@ -198,7 +198,7 @@ module BCDice
             1
           elsif value <= 11
             dice = @randomizer.roll_once(6)
-            total = dice / 2
+            total = (dice / 2).to_i
             "#{total}(#{dice}[#{dice}]/2)"
           elsif value <= 14
             dice = @randomizer.roll_once(6)
diff --git a/lib/bcdice/game_system/beginning_idol/chain_d66_table.rb b/lib/bcdice/game_system/beginning_idol/chain_d66_table.rb
--- a/lib/bcdice/game_system/beginning_idol/chain_d66_table.rb
+++ b/lib/bcdice/game_system/beginning_idol/chain_d66_table.rb
@@ -18,7 +18,7 @@ module BCDice
           dice = randomizer.roll_barabara(2, 6).sort
 
           value = dice[0] * 10 + dice[1]
-          chosen = @items[value]
+          chosen = @items[value.to_s]
           body = chosen.map { |item| item.respond_to?(:roll) ? item.roll(randomizer) : item }.join("\n")
 
           return "#{@name}(#{value}) ＞ #{body}"
diff --git a/lib/bcdice/game_system/beginning_idol/costume_table.rb b/lib/bcdice/game_system/beginning_idol/costume_table.rb
--- a/lib/bcdice/game_system/beginning_idol/costume_table.rb
+++ b/lib/bcdice/game_system/beginning_idol/costume_table.rb
@@ -20,7 +20,7 @@ module BCDice
         # @return [String]
         def roll(randomizer)
           value = randomizer.roll_d66(D66SortType::ASC)
-          "#{@name}(#{value}) ＞ #{@items[value]}"
+          "#{@name}(#{value}) ＞ #{@items[value.to_s]}"
         end
 
         # @return [DiceTable::D66Table]
diff --git a/lib/bcdice/game_system/beginning_idol/random_event_table.rb b/lib/bcdice/game_system/beginning_idol/random_event_table.rb
--- a/lib/bcdice/game_system/beginning_idol/random_event_table.rb
+++ b/lib/bcdice/game_system/beginning_idol/random_event_table.rb
@@ -21,7 +21,7 @@ module BCDice
           name = I18n.t("BeginningIdol.RE.name", locale: @locale)
           result_format = I18n.t("BeginningIdol.RE.format", locale: @locale)
 
-          chosen = table[:items][d66_index]
+          chosen = table[:items][d66_index.to_s]
 
           return "#{name} ＞ (1D6) ＞ #{first_index}\n#{table[:name]} ＞ [#{d66_index}] ＞ #{format(result_format, event: chosen[0], page: chosen[1])}"
         end
diff --git a/lib/bcdice/game_system/beginning_idol/table.rb b/lib/bcdice/game_system/beginning_idol/table.rb
--- a/lib/bcdice/game_system/beginning_idol/table.rb
+++ b/lib/bcdice/game_system/beginning_idol/table.rb
@@ -76,9 +76,9 @@ module BCDice
             I18n.t("BeginningIdol.GG.name", locale: locale),
             I18n.t("BeginningIdol.GG.items", locale: locale).to_h do |index, value|
               chain =
-                if [23, 24, 25].include?(index)
+                if ["23", "24", "25"].include?(index)
                   [value, rare_skill_table]
-                elsif index == 56
+                elsif index == "56"
                   [value, item_table]
                 else
                   [value]
@@ -88,9 +88,13 @@ module BCDice
             end
           )
 
+          ha_items = I18n.t("BeginningIdol.HA.items", locale: locale)
+          ha_items["22"] = [ha_items["22"], SkillHometown.new(skill_table)].flatten
+
+
           ha = ChainD66Table.new(
             I18n.t("BeginningIdol.HA.name", locale: locale),
-            I18n.t("BeginningIdol.HA.items", locale: locale).dup.tap { |items| items[22].push(SkillHometown.new(skill_table)) }
+            ha_items
           )
 
           {
diff --git a/lib/bcdice/game_system/cthulhu7th/full_auto.rb b/lib/bcdice/game_system/cthulhu7th/full_auto.rb
--- a/lib/bcdice/game_system/cthulhu7th/full_auto.rb
+++ b/lib/bcdice/game_system/cthulhu7th/full_auto.rb
@@ -43,7 +43,7 @@ module BCDice
           broken_number = m[3].to_i
           bonus_dice_count = m[4].to_i
           stop_count = m[5]&.downcase || ""
-          bullet_set_count_cap = m[6]&.to_i || diff / 10
+          bullet_set_count_cap = m[6]&.to_i || (diff / 10).to_i
 
           output = ""
 
@@ -55,8 +55,8 @@ module BCDice
           end
 
           # ボレーの上限の設定がおかしい場合の注意表示
-          if (bullet_set_count_cap > diff / 10) && (diff > 39) && !m[6].nil?
-            bullet_set_count_cap = diff / 10
+          if (bullet_set_count_cap > (diff / 10).to_i) && (diff > 39) && !m[6].nil?
+            bullet_set_count_cap = (diff / 10).to_i
             output += "ボレーの弾丸の数の上限は\[技能値÷10（切り捨て）\]発なので、それより高い数を指定できません。ボレーの弾丸の数を#{bullet_set_count_cap}発に変更します。\n"
           elsif (diff <= 39) && (bullet_set_count_cap > 3) && !m[6].nil?
             bullet_set_count_cap = 3
@@ -247,7 +247,7 @@ module BCDice
         end
 
         def getSetOfBullet(diff, bullet_set_count_cap)
-          bullet_set_count = diff / 10
+          bullet_set_count = (diff / 10).to_i
 
           if bullet_set_count_cap < bullet_set_count
             bullet_set_count = bullet_set_count_cap
@@ -261,7 +261,7 @@ module BCDice
         end
 
         def getHitBulletCountBase(diff, bullet_set_count)
-          hit_bullet_count_base = (bullet_set_count / 2)
+          hit_bullet_count_base = (bullet_set_count / 2).to_i
 
           if (diff >= 1) && (diff < 30)
             hit_bullet_count_base = 1 # 技能値29以下での最低値保障
diff --git a/lib/bcdice/loader.rb b/lib/bcdice/loader.rb
--- a/lib/bcdice/loader.rb
+++ b/lib/bcdice/loader.rb
@@ -28,7 +28,7 @@ module BCDice
       class_name = id.tr(":.", "_")
 
       # 対象ディレクトリの外にあるファイルをロードされないように制約を設ける
-      unless /\A[A-Z]\w*\z/.match?(class_name)
+      unless /^[A-Z]\w*$/.match?(class_name)
         return nil
       end
 
diff --git a/lib/bcdice/preprocessor.rb b/lib/bcdice/preprocessor.rb
--- a/lib/bcdice/preprocessor.rb
+++ b/lib/bcdice/preprocessor.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require "bcdice/arithmetic"
+
 module BCDice
   # 入力文字列に対して前処理を行う
   #
diff --git a/lib/bcdice/user_defined_dice_table.rb b/lib/bcdice/user_defined_dice_table.rb
--- a/lib/bcdice/user_defined_dice_table.rb
+++ b/lib/bcdice/user_defined_dice_table.rb
@@ -108,7 +108,7 @@ module BCDice
     def parse
       return if @rows
 
-      lines = @text.split(/\R/).map(&:rstrip).reject(&:empty?)
+      lines = @text.split(/\r?\n/).map(&:rstrip).reject(&:empty?)
       @name = lines.shift
       @type = lines.shift.upcase
       @rows = lines
diff --git a/test/data/KillDeathBusiness.toml b/test/data/KillDeathBusiness.toml
--- a/test/data/KillDeathBusiness.toml
+++ b/test/data/KillDeathBusiness.toml
@@ -1451,7 +1451,7 @@ rands = [
 [[ test ]]
 game_system = "KillDeathBusiness"
 input = "POT"
-output = "ヘル司会者 リアクション表(好印象ver)(6) ＞ 「いやぁ面白い回答でした！　座布団を差し上げます、いーちにーい……ところで今、視聴率何%でしたっけ？」\n視聴率の確認に乗じて座布団の枚数を誤魔化される。\n座布団の枚数を3枚増減させる。"
+output = "ヘル司会者 リアクション表(好印象ver)(6) ＞ 「いやぁ面白い回答でした！　座布団を差し上げます、いーちにーい……ところで今、視聴率何％でしたっけ？」\n視聴率の確認に乗じて座布団の枚数を誤魔化される。\n座布団の枚数を3枚増減させる。"
 rands = [
   { sides = 6, value = 6 },
   { sides = 6, value = 6 },
diff --git a/test/data/calc.toml b/test/data/calc.toml
--- a/test/data/calc.toml
+++ b/test/data/calc.toml
@@ -256,3 +256,57 @@ input = "sc1+4*3/2"
 output = "c(1+4*3/2) ＞ 7"
 secret = true
 rands = []
+
+[[ test ]]
+game_system = "DiceBot"
+input = "C(1/2F)"
+output = "c(1/2F) ＞ 0"
+rands = []
+
+[[ test ]]
+game_system = "DiceBot"
+input = "1d(3/2U)"
+output = "(1D2) ＞ 1"
+rands = [{ sides = 2, value = 1 }]
+
+[[ test ]]
+game_system = "DiceBot"
+input = "(3/2F)d1"
+output = "(1D1) ＞ 1"
+rands = [{ sides = 1, value = 1 }]
+
+[[ test ]]
+game_system = "DiceBot"
+input = "c((1+2)/2F) 切り捨て"
+output = "c((1+2)/2F) ＞ 1"
+rands = [{ sides = 1, value = 1 }]
+
+[[ test ]]
+game_system = "DiceBot"
+input = "C(-5/10F)"
+output = "c(-5/10F) ＞ -1"
+rands = []
+
+[[ test ]]
+game_system = "DiceBot"
+input = "C(-5/10C)"
+output = "c(-5/10C) ＞ 0"
+rands = []
+
+[[ test ]]
+game_system = "DiceBot"
+input = "C(-6/10R)"
+output = "c(-6/10R) ＞ -1"
+rands = []
+
+[[ test ]]
+game_system = "DiceBot"
+input = "C(-5/10R)"
+output = "c(-5/10R) ＞ -1"
+rands = []
+
+[[ test ]]
+game_system = "DiceBot"
+input = "C(-4/10R)"
+output = "c(-4/10R) ＞ 0"
+rands = []