Artifact c60b69b613491e11ff5ff7b3842b85fa73516ee3986ab88bcaf3421f5a625457:

• File libtommath/bn_mp_reduce_setup.c — part of check-in [94cf70186e] at 2019-06-13 19:07:13 on branch libtommath — Update to latest libtommath's "develop" branch. On the way to 1.2.0 (user: jan.nijtmans size: 498) [more...]

#include "tommath_private.h"
#ifdef BN_MP_REDUCE_SETUP_C
/* LibTomMath, multiple-precision integer library -- Tom St Denis */
/* SPDX-License-Identifier: Unlicense */

/* pre-calculate the value required for Barrett reduction
 * For a given modulus "b" it calulates the value required in "a"
 */
mp_err mp_reduce_setup(mp_int *a, const mp_int *b)
{
   mp_err err;
   if ((err = mp_2expt(a, b->used * 2 * MP_DIGIT_BIT)) != MP_OKAY) {
      return err;
   }
   return mp_div(a, b, a, NULL);
}
#endif