Add coeff ops counter#2
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Counts modular coefficient operations so feynman-bench can report a num_ops metric per reduction: - coeff_ops: monomial-level ops in the Laporta substitution kernel (add_to) - presolve_ops: ops in the presolve (add_ibps) Both are per-sector atomics persisted to the per-sector DB via increment() and summed in Evaluate(), printed as "Coeff ops:", "Presolve ops:", "Total ops:" in the STATISTICS block. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Two fixes to make Total ops an honest count of modular multiplicative ops: - presolve_ops: each add_ibps outer iteration does (dim+1) coefficient multiplications per single-equation branch and 2*(dim+1) for the both-equations branch, not 1. Bump accordingly instead of once per iter. - div_ops (new): count modular inversions in mul_inv(), one per pivot coefficient computation. The trailing multiply of a division is left uncounted, symmetric with FIRE 7's nmod_div. Total ops = coeff_ops + presolve_ops + div_ops, printed in STATISTICS and persisted per-sector for master aggregation. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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