view libtommath/bn_mp_reduce_setup.c @ 1490:9b87cbe931e3

build: Remove unused constructs: `space' and `AC_PROG_MAKE_SET' The makefile variable `space' is never used. The autoconf output variable `SET_MAKE' is never used, so the autoconf macro `AC_PROG_MAKE_SET' has been removed.
author Michael Witten <>
date Mon, 31 Jul 2017 23:55:52 +0000
parents 8bba51a55704
children f52919ffd3b1
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#include <tommath_private.h>
/* 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, [email protected],

/* 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);

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