Download, use, and learn about GMP, an open-source C library for arbitrary-precision arithmetic, with documentation and source code available.
High-precision math library for developers
The GNU MP Bignum Library (GMP) site is the home of a powerful open-source C library for arithmetic on big numbers. Here, you can download the latest source code, access detailed documentation, and find patches for the library.
Whether you’re a developer needing fast and precise calculations with large integers or rationals, or someone interested in open-source math libraries, this site gives you the tools and information you need. It’s supported by a dedicated volunteer community, making it a trusted resource for high-precision computing.
You’ll find clear manuals, links to different versions, and support for building GMP in various environments. The site is simple and straightforward, letting you quickly get what you need for your math or software development projects.
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