google/double-conversion

Health v2 · maintenance only

Adoption not part of the score

1193 stars · 307 forks observed · 2026-09-01

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A C++ library providing efficient binary-decimal and decimal-binary conversion routines for IEEE doubles, extracted from the V8 JavaScript engine. It offers fast, correct string-to-double and double-to-string parsing and formatting.

Use cases

• parse decimal strings into IEEE doubles quickly
• format doubles as shortest round-trippable decimal strings
• replace slow strtod/atof in performance-critical code
• implement JSON or config parsers needing exact float parsing
• embed correct number conversion in a scripting engine

When to choose

• you need fast, standards-compliant float parsing or formatting in C++
• you want shortest round-trip decimal output for doubles
• you need battle-tested code proven in a major JS engine

When to avoid

• you only need basic conversions and std::to_string/stod suffices
• you work in a language with built-in fast float conversion
• you need arbitrary-precision decimal arithmetic

Facets

library · maturity stable

serialization parser developer-tools developer-tools performance cpp cross-platform floating-point ieee-754 number-parsing string-conversion v8 algorithms

Member repositories

For agents

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