libtommath ☆

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Description:
C library for number theoretic multiple-precision integers

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: c-library mathematics cryptography big-integer number-theory

Install: brew install libtommath

About:
Libtommath is a portable and efficient C library for number theoretic multiple-precision integers. It provides routines for arithmetic on large integers, supporting operations like addition, multiplication, and modular exponentiation. Its value lies in being a standalone dependency for applications requiring high-precision math without relying on larger, more complex libraries.

Key Features:

Portable C code with no dependencies
Comprehensive set of arithmetic and number theoretic functions
Configurable memory allocation
Small and embeddable codebase

Use Cases:

Cryptographic implementations requiring large integer math
Scientific computing applications
Embedded systems development

Alternatives:

GMP (GNU Multiple Precision Arithmetic Library) – GMP is often faster but has more complex dependencies and a LGPL license, whereas Libtommath is public domain and simpler to embed.

Version History

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