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Rust port of libbf released as Beeg Float library

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Key points

  • Full IEEE 754 compliance with advanced features
  • Supports transcendental functions and decimal floating point
  • Optimized performance compared to C libbf and GMP

Overview of Beeg Float

Beeg Float is a Rust translation of the libbf library, authored by Fabrice Bellard, that provides arbitrary-precision floating-point capabilities. It incorporates complete IEEE 754 semantics, including features like signed zeros, NaN, infinities, subnormals, and all rounding modes.

Functionality and Features

The library supports various transcendental functions such as exponential, logarithmic, and trigonometric calculations. Additionally, it offers independent base-10 arithmetic through its BigDecimal type, making it adaptable for different numerical applications.

Performance Comparisons

Beeg Float is designed to maintain optimal performance similar to its C counterpart, particularly in operations like multiplication and transcendentals. Comparative benchmarks indicate that it achieves throughput comparable to libbf with minimal overhead from Rust's checks.

Benefits of Pure Rust Implementation

As a pure Rust library, Beeg Float avoids the complexities of external dependencies and system-wide installations. It can be easily integrated into projects via the cargo package manager, functioning across various targets including WASM and embedded systems.

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Reporting from

A Rust port of Fabrice Bellard's arbitrary-precision floating-point library, named Beeg Float, has been released. It offers full IEEE 754 compliance, various transcendental functions, and is fully compatible with no_std in Rust, providing a pure Rust implementation with no dependencies.