Implement Decimal32/64/128 arithmetic and comparison operators#130508

Merged

tannergooding merged 20 commits into

dotnet:mainfrom

tannergooding:tannergooding-decimal-ieee754-operators

Jul 13, 2026

Commits on Jul 10, 2026

Implement unary plus/negation for Decimal32/64/128

tannergooding
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Implement addition/subtraction for Decimal32/64/128

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Implement equality/inequality for Decimal32/64/128

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Implement relational comparisons for Decimal32/64/128

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Implement multiplication for Decimal32/64/128

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Implement division for Decimal32/64/128

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Implement increment and decrement for Decimal32/64/128

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Rewrite Decimal32/64/128 arithmetic to word-level integer operations

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Regenerate System.Runtime ref for Decimal32/64/128 via GenAPI

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Note reciprocal-multiply table optimization opportunity in WideDivideByTen

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Add Intel Decimal Floating-Point Math Library notice to THIRD-PARTY-NOTICES

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Merge remote-tracking branch 'dotnet/main' into tannergooding-decimal-ieee754-operators
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Treat non-canonical finite decimal encodings as zero when unpacking

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Skip WideDigitCount when the exponent already overflows to infinity

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Use the Power10 table for in-range operand alignment in AddDecimalIeee754

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Make increment/decrement operator test comments match their dataset

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Fix equality comment and unused parameter in decimal operator tests

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Implement Decimal32/64/128 arithmetic and comparison operators#130508

Implement Decimal32/64/128 arithmetic and comparison operators#130508
tannergooding merged 20 commits into
dotnet:mainfrom
tannergooding:tannergooding-decimal-ieee754-operators

Commits on Jul 10, 2026

Implement unary plus/negation for Decimal32/64/128

Implement addition/subtraction for Decimal32/64/128

Implement equality/inequality for Decimal32/64/128

Implement relational comparisons for Decimal32/64/128

Implement multiplication for Decimal32/64/128

Implement division for Decimal32/64/128

Implement increment and decrement for Decimal32/64/128

Rewrite Decimal32/64/128 arithmetic to word-level integer operations

Regenerate System.Runtime ref for Decimal32/64/128 via GenAPI

Note reciprocal-multiply table optimization opportunity in WideDivideByTen

Add Intel Decimal Floating-Point Math Library notice to THIRD-PARTY-NOTICES

Merge remote-tracking branch 'dotnet/main' into tannergooding-decimal-ieee754-operators

Treat non-canonical finite decimal encodings as zero when unpacking

Skip WideDigitCount when the exponent already overflows to infinity

Use the Power10 table for in-range operand alignment in AddDecimalIeee754

Make increment/decrement operator test comments match their dataset

Fix equality comment and unused parameter in decimal operator tests

Commits on Jul 11, 2026

Widen decimal wide-arithmetic helpers to native integers for the 32-bit and 64-bit formats

Propagate decimal NaN payloads and match the Intel invalid-operation NaN sign

Cross-validate decimal operators against the Intel reference vectors