fast_float ☆

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Description:
Fast and exact implementation of the C++ from_chars functions for number types

Type: Formula | Latest Version: 8.1.0@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: c++ parsing performance header-only library

Install: brew install fast_float

About:
Fast_float is a header-only C++ library that provides a high-performance parser for converting strings to floating-point numbers. It accurately implements the C++17 std::from_chars algorithm for floats and doubles, offering significant speed improvements over traditional methods like strtod. This library is ideal for applications requiring rapid parsing of large datasets or log files.

Key Features:

High-speed parsing, often faster than standard library functions
Exact and standards-compliant implementation of from_chars
Header-only library for easy integration
Zero dependencies

Use Cases:

Parsing large CSV or JSON files efficiently
High-performance data ingestion pipelines
Financial data processing where speed and accuracy are critical

Alternatives:

std::from_chars – Standard library implementation, which may be slower or less optimized depending on the compiler and platform.
Strtod – Older C-style function; significantly slower and locale-dependent.

License: Apache-2.0

Bottles available for: all

Version History

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