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comparison libtommath/bn_mp_abs.c @ 1692:1051e4eea25a

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Update LibTomMath to 1.2.0 (#84) * update C files * update other files * update headers * update makefiles * remove mp_set/get_double() * use ltm 1.2.0 API * update ltm_desc * use bundled tommath if system-tommath is too old * XMALLOC etc. were changed to MP_MALLOC etc.
author Steffen Jaeckel <s@jaeckel.eu>
date Tue, 26 May 2020 17:36:47 +0200
parents f52919ffd3b1
children
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1691:2d3745d58843 1692:1051e4eea25a
1 #include "tommath_private.h" 1 #include "tommath_private.h"
2 #ifdef BN_MP_ABS_C 2 #ifdef BN_MP_ABS_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 * SPDX-License-Identifier: Unlicense
13 */
14 5
15 /* b = |a| 6 /* b = |a|
16 * 7 *
17 * Simple function copies the input and fixes the sign to positive 8 * Simple function copies the input and fixes the sign to positive
18 */ 9 */
19 int mp_abs(const mp_int *a, mp_int *b) 10 mp_err mp_abs(const mp_int *a, mp_int *b)
20 { 11 {
21 int res; 12 mp_err err;
22 13
23 /* copy a to b */ 14 /* copy a to b */
24 if (a != b) { 15 if (a != b) {
25 if ((res = mp_copy(a, b)) != MP_OKAY) { 16 if ((err = mp_copy(a, b)) != MP_OKAY) {
26 return res; 17 return err;
27 } 18 }
28 } 19 }
29 20
30 /* force the sign of b to positive */ 21 /* force the sign of b to positive */
31 b->sign = MP_ZPOS; 22 b->sign = MP_ZPOS;
32 23
33 return MP_OKAY; 24 return MP_OKAY;
34 } 25 }
35 #endif 26 #endif
36
37 /* ref: HEAD -> master, tag: v1.1.0 */
38 /* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
39 /* commit time: 2019-01-28 20:32:32 +0100 */