Mercurial > dropbear
comparison libtommath/bn_mp_reduce_2k_setup_l.c @ 1692:1051e4eea25a
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> |
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date | Tue, 26 May 2020 17:36:47 +0200 |
parents | f52919ffd3b1 |
children |
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1691:2d3745d58843 | 1692:1051e4eea25a |
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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 * SPDX-License-Identifier: Unlicense | |
13 */ | |
14 | 5 |
15 /* determines the setup value */ | 6 /* determines the setup value */ |
16 int mp_reduce_2k_setup_l(const mp_int *a, mp_int *d) | 7 mp_err mp_reduce_2k_setup_l(const mp_int *a, mp_int *d) |
17 { | 8 { |
18 int res; | 9 mp_err err; |
19 mp_int tmp; | 10 mp_int tmp; |
20 | 11 |
21 if ((res = mp_init(&tmp)) != MP_OKAY) { | 12 if ((err = mp_init(&tmp)) != MP_OKAY) { |
22 return res; | 13 return err; |
23 } | 14 } |
24 | 15 |
25 if ((res = mp_2expt(&tmp, mp_count_bits(a))) != MP_OKAY) { | 16 if ((err = mp_2expt(&tmp, mp_count_bits(a))) != MP_OKAY) { |
26 goto LBL_ERR; | 17 goto LBL_ERR; |
27 } | 18 } |
28 | 19 |
29 if ((res = s_mp_sub(&tmp, a, d)) != MP_OKAY) { | 20 if ((err = s_mp_sub(&tmp, a, d)) != MP_OKAY) { |
30 goto LBL_ERR; | 21 goto LBL_ERR; |
31 } | 22 } |
32 | 23 |
33 LBL_ERR: | 24 LBL_ERR: |
34 mp_clear(&tmp); | 25 mp_clear(&tmp); |
35 return res; | 26 return err; |
36 } | 27 } |
37 #endif | 28 #endif |
38 | |
39 /* ref: HEAD -> master, tag: v1.1.0 */ | |
40 /* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */ | |
41 /* commit time: 2019-01-28 20:32:32 +0100 */ |