Copyright 2011-2013 Free Software Foundation, Inc. This file is part of the GNU MP Library. The GNU MP Library is free software; you can redistribute it and/or modify it under the terms of either: * the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. or * the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. or both in parallel, as here. The GNU MP Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received copies of the GNU General Public License and the GNU Lesser General Public License along with the GNU MP Library. If not, see https://www.gnu.org/licenses/. This is "mini-gmp", a small implementation of a subset of GMP's mpn and mpz interfaces. It is intended for applications which need arithmetic on numbers larger than a machine word, but which don't need to handle very large numbers very efficiently. Those applications can include a copy of mini-gmp to get a GMP-compatible interface with small footprint. One can also arrange for optional linking with the real GMP library, using mini-gmp as a fallback when for some reason GMP is not available, or not desired as a dependency. The supported GMP subset is declared in mini-gmp.h. The implemented functions are fully compatible with the corresponding GMP functions, as specified in the GMP manual, with a few exceptions: mpz_set_str, mpz_init_set_str, mpz_get_str, mpz_out_str and mpz_sizeinbase support only |base| <= 36; mpz_export and mpz_import support only NAILS = 0. The REALLOC_FUNC and FREE_FUNC registered with mp_set_memory_functions does not get the correct size of the allocated block in the corresponding argument. mini-gmp always passes zero for these rarely used arguments. The implementation is a single file, mini-gmp.c. The performance target for mini-gmp is to be at most 10 times slower than the real GMP library, for numbers of size up to a few hundred bits. No asymptotically fast algorithms are included in mini-gmp, so it will be many orders of magnitude slower than GMP for very large numbers. You should never "install" mini-gmp. Applications can either just #include mini-gmp.c (but then, beware that it defines several macros and functions outside of the advertised interface). Or compile mini-gmp.c as a separate compilation unit, and use the declarations in mini-gmp.h. The tests subdirectory contains a testsuite. To use it, you need GMP and GNU make. Just run make check in the tests directory. If the hard-coded compiler settings are not right, you have to either edit the Makefile or pass overriding values on the make command line (e.g., make CC=cc check). Testing is not (yet) as thorough as for the real GMP. The current version was put together by Niels MÃ¶ller <nisse@lysator.liu.se>, with a fair amount of copy-and-paste from the GMP sources.