M5 #335: Audit and convert monetary Decimal arithmetic to checked helpers#371

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joaquinbejar merged 10 commits into

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M5/issue-335-checked-decimal-monetary

Apr 19, 2026

Commits on Apr 19, 2026

feat(error): add DecimalError::Overflow and checked d_add/d_sub/d_mul/d_div helpers
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feat(pricing): route monetary-boundary arithmetic through checked d_* helpers
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feat(greeks): route Greek scaling/annualisation through checked d_div helpers
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feat(position): route pnl_at_expiration and unrealized_pnl through checked d_* helpers
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feat(strategies): route multi-leg P&L aggregation through checked d_sum
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feat(volatility,chain): route variance and exposure aggregations through checked d_* helpers
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chore(decimal): drop #[allow(dead_code)] shims from d_* helpers
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address review: finish checked-d_* chains in pricing and greeks
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address review: finish checked-d_* in volatility kernels
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address review: dedup strategy trace! P&L and clarify Overflow doc
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