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comparison libtommath/bn_mp_reduce_2k_setup_l.c @ 1739:13d834efc376 fuzz

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merge from main
author Matt Johnston <matt@ucc.asn.au>
date Thu, 15 Oct 2020 19:55:15 +0800
parents 1051e4eea25a
children
comparison
equal deleted inserted replaced
1562:768ebf737aa0 1739:13d834efc376
1 #include <tommath_private.h> 1 #include "tommath_private.h"
2 #ifdef BN_MP_REDUCE_2K_SETUP_L_C 2 #ifdef BN_MP_REDUCE_2K_SETUP_L_C
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis 3 /* LibTomMath, multiple-precision integer library -- Tom St Denis */
4 * 4 /* SPDX-License-Identifier: Unlicense */
5 * LibTomMath is a library that provides multiple-precision
6 * integer arithmetic as well as number theoretic functionality.
7 *
8 * The library was designed directly after the MPI library by
9 * Michael Fromberger but has been written from scratch with
10 * additional optimizations in place.
11 *
12 * The library is free for all purposes without any express
13 * guarantee it works.
14 *
15 * Tom St Denis, [email protected], http://libtom.org
16 */
17 5
18 /* determines the setup value */ 6 /* determines the setup value */
19 int mp_reduce_2k_setup_l(mp_int *a, mp_int *d) 7 mp_err mp_reduce_2k_setup_l(const mp_int *a, mp_int *d)
20 { 8 {
21 int res; 9 mp_err err;
22 mp_int tmp; 10 mp_int tmp;
23 11
24 if ((res = mp_init(&tmp)) != MP_OKAY) { 12 if ((err = mp_init(&tmp)) != MP_OKAY) {
25 return res; 13 return err;
26 } 14 }
27 15
28 if ((res = mp_2expt(&tmp, mp_count_bits(a))) != MP_OKAY) { 16 if ((err = mp_2expt(&tmp, mp_count_bits(a))) != MP_OKAY) {
29 goto ERR; 17 goto LBL_ERR;
30 } 18 }
31 19
32 if ((res = s_mp_sub(&tmp, a, d)) != MP_OKAY) { 20 if ((err = s_mp_sub(&tmp, a, d)) != MP_OKAY) {
33 goto ERR; 21 goto LBL_ERR;
34 } 22 }
35 23
36 ERR: 24 LBL_ERR:
37 mp_clear(&tmp); 25 mp_clear(&tmp);
38 return res; 26 return err;
39 } 27 }
40 #endif 28 #endif
41
42 /* ref: $Format:%D$ */
43 /* git commit: $Format:%H$ */
44 /* commit time: $Format:%ai$ */