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Float#to_d 2x faster for short decimals like prices and rates, skipping dtoa - #564

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czj wants to merge 3 commits into

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czj:float-to-d-fast-path

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Float#to_d 2x faster for short decimals like prices and rates, skipping dtoa#564
czj wants to merge 3 commits into
ruby:masterfrom
czj:float-to-d-fast-path

Commits on Oct 26, 2026
- Faster Float to BigDecimal conversion for doubles with a short decimal form
  
  czj
  and
  claude
  committed
  4d6f284
Commits on Oct 27, 2026
- Skip the Float#to_d fast path under -ffast-math and below 1e-22
  
  czj
  and
  claude
  committed
  123cd59
- Verify Float#to_d fast path candidates in exact integer arithmetic
  
  czj
  and
  claude
  committed
  659c937