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GNU MP 4.1.2

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1. Introduction to GNU MP

GNU MP is a portable library written in C for arbitrary precision arithmetic on integers, rational numbers, and floating-point numbers. It aims to provide the fastest possible arithmetic for all applications that need higher precision than is directly supported by the basic C types.

Many applications use just a few hundred bits of precision; but some applications may need thousands or even millions of bits. GMP is designed to give good performance for both, by choosing algorithms based on the sizes of the operands, and by carefully keeping the overhead at a minimum.

The speed of GMP is achieved by using fullwords as the basic arithmetic type, by using sophisticated algorithms, by including carefully optimized assembly code for the most common inner loops for many different CPUs, and by a general emphasis on speed (as opposed to simplicity or elegance).

There is carefully optimized assembly code for these CPUs: ARM, DEC Alpha 21064, 21164, and 21264, AMD 29000, AMD K6, K6-2 and Athlon, Hitachi SuperH and SH-2, HPPA 1.0, 1.1 and 2.0, Intel Pentium, Pentium Pro/II/III, Pentium 4, generic x86, Intel IA-64, i960, Motorola MC68000, MC68020, MC88100, and MC88110, Motorola/IBM PowerPC 32 and 64, National NS32000, IBM POWER, MIPS R3000, R4000, SPARCv7, SuperSPARC, generic SPARCv8, UltraSPARC, DEC VAX, and Zilog Z8000. Some optimizations also for Cray vector systems, Clipper, IBM ROMP (RT), and Pyramid AP/XP.

There are two public mailing lists of interest. One for general questions and discussions about usage of the GMP library and one for discussions about development of GMP. There's more information about the mailing lists at http://swox.com/mailman/listinfo/. These lists are not for bug reports.

The proper place for bug reports is bug-gmp@gnu.org. See 4. Reporting Bugs for info about reporting bugs.

For up-to-date information on GMP, please see the GMP web pages at

http://swox.com/gmp/

The latest version of the library is available at

ftp://ftp.gnu.org/gnu/gmp

Many sites around the world mirror `ftp.gnu.org', please use a mirror near you, see http://www.gnu.org/order/ftp.html for a full list.