#include <tommath.h> #ifdef BN_MP_REDUCE_SETUP_C /* LibTomMath, multiple-precision integer library -- Tom St Denis * * LibTomMath is a library that provides multiple-precision * integer arithmetic as well as number theoretic functionality. * * The library was designed directly after the MPI library by * Michael Fromberger but has been written from scratch with * additional optimizations in place. * * The library is free for all purposes without any express * guarantee it works. * * Tom St Denis, tomstdenis@gmail.com, http://libtom.org */ /* pre-calculate the value required for Barrett reduction * For a given modulus "b" it calulates the value required in "a" */ int mp_reduce_setup (mp_int * a, mp_int * b) { int res; if ((res = mp_2expt (a, b->used * 2 * DIGIT_BIT)) != MP_OKAY) { return res; } return mp_div (a, b, a, NULL); } #endif /* $Source: /cvs/libtom/libtommath/bn_mp_reduce_setup.c,v $ */ /* $Revision: 1.4 $ */ /* $Date: 2006/12/28 01:25:13 $ */