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Increase LUT size to 200 and add spice kernel pipeline - #32
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The 20-point linear LUT over [0, 5.3*tau] biased the static transfer curve by 0.5/1.6/2.9% at lam*tau = 3/20/60 against the closed-form renewal model (the residual grows with saturation depth because the microcell age density concentrates where the 0.27*tau grid is coarsest). At 200 points the residual drops to <= 0.1%, the MC noise floor of a 200k-step run; 2000 points buys nothing further. Lookup is an early-exit linear scan, so the runtime cost is negligible. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Summary
Related work
These changes resolve the LUT discretisation bias (issue #12, ~0.5–2.9% in static cross-check) and provide a repeatable derivation of the fast-output shaping kernel from the device circuit (issue #15).
Test plan
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