Artifact 72119aaa588d27eef9567f83ca0cb4edb22c5c0c752abc7054142061de342638:

• File libtommath/bn_mp_submod.c — part of check-in [7d72d6cbfb] at 2019-10-07 11:37:36 on branch libtommath — Update to latest "develop" branch (user: jan.nijtmans size: 510) [more...]

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

/* d = a - b (mod c) */
mp_err mp_submod(const mp_int *a, const mp_int *b, const mp_int *c, mp_int *d)
{
   mp_err err;
   mp_int t;

   if ((err = mp_init(&t)) != MP_OKAY) {
      return err;
   }

   if ((err = mp_sub(a, b, &t)) != MP_OKAY) {
      goto LBL_ERR;
   }
   err = mp_mod(&t, c, d);

LBL_ERR:
   mp_clear(&t);
   return err;
}
#endif