diff options
Diffstat (limited to 'libtommath/bn_mp_mod.c')
| -rw-r--r-- | libtommath/bn_mp_mod.c | 39 |
1 files changed, 13 insertions, 26 deletions
diff --git a/libtommath/bn_mp_mod.c b/libtommath/bn_mp_mod.c index 793a06c..8fbfe08 100644 --- a/libtommath/bn_mp_mod.c +++ b/libtommath/bn_mp_mod.c @@ -1,44 +1,31 @@ #include "tommath_private.h" #ifdef BN_MP_MOD_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. - * - * SPDX-License-Identifier: Unlicense - */ +/* LibTomMath, multiple-precision integer library -- Tom St Denis */ +/* SPDX-License-Identifier: Unlicense */ /* c = a mod b, 0 <= c < b if b > 0, b < c <= 0 if b < 0 */ -int mp_mod(const mp_int *a, const mp_int *b, mp_int *c) +mp_err mp_mod(const mp_int *a, const mp_int *b, mp_int *c) { mp_int t; - int res; + mp_err err; - if ((res = mp_init_size(&t, b->used)) != MP_OKAY) { - return res; + if ((err = mp_init_size(&t, b->used)) != MP_OKAY) { + return err; } - if ((res = mp_div(a, b, NULL, &t)) != MP_OKAY) { - mp_clear(&t); - return res; + if ((err = mp_div(a, b, NULL, &t)) != MP_OKAY) { + goto LBL_ERR; } - if ((mp_iszero(&t) != MP_NO) || (t.sign == b->sign)) { - res = MP_OKAY; + if (MP_IS_ZERO(&t) || (t.sign == b->sign)) { + err = MP_OKAY; mp_exch(&t, c); } else { - res = mp_add(b, &t, c); + err = mp_add(b, &t, c); } +LBL_ERR: mp_clear(&t); - return res; + return err; } #endif - -/* ref: HEAD -> master, tag: v1.1.0 */ -/* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */ -/* commit time: 2019-01-28 20:32:32 +0100 */ |