double-conversion ☆

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Description:
Binary-decimal and decimal-binary routines for IEEE doubles

Type: Formula | Latest Version: 3.4.0@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: c-plus-plus library floating-point conversion math

Install: brew install double-conversion

About:
Double-conversion is a high-performance C++ library that provides binary-to-decimal and decimal-to-binary conversion routines for IEEE double-precision floating-point numbers. It is designed for accuracy and speed, making it ideal for applications that need to convert floating-point values to strings and back. This library powers the number-to-string conversion in many modern JavaScript engines and other performance-critical systems.

Key Features:

High-performance C++ implementation
IEEE 754 compliant for accurate conversions
Minimal dependencies
Widely used in major JavaScript engines like V8

Use Cases:

Implementing fast floating-point to string conversion in compilers or interpreters
Building high-performance data serialization systems
Developing applications requiring precise numerical formatting

Alternatives:

Ryu – Ryu is a newer algorithm that often provides even faster float-to-string conversions, while double-conversion is a well-established and robust library.
Standard Library (std::to_chars) – C++17's std::to_chars offers a standard, locale-independent way to convert numbers, but double-conversion may offer more control or performance in specific legacy or high-demand scenarios.

License: BSD-3-Clause

Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, sonoma, arm64_linux, x86_64_linux

Version History

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