Mercurial > dropbear
comparison libtommath/bn_mp_abs.c @ 1655:f52919ffd3b1
update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
* make key-generation compliant to FIPS 186.4
* fix includes in tommath_class.h
* update fuzzcorpus instead of error-out
* fixup fuzzing make-targets
* update Makefile.in
* apply necessary patches to ltm sources
* clean-up not required ltm files
* update to vanilla ltm 1.1.0
this already only contains the required files
* remove set/get double
author | Steffen Jaeckel <s_jaeckel@gmx.de> |
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date | Mon, 16 Sep 2019 15:50:38 +0200 |
parents | 8bba51a55704 |
children | 1051e4eea25a |
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1654:cc0fc5131c5c | 1655:f52919ffd3b1 |
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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 * |
5 * LibTomMath is a library that provides multiple-precision | 5 * LibTomMath is a library that provides multiple-precision |
6 * integer arithmetic as well as number theoretic functionality. | 6 * integer arithmetic as well as number theoretic functionality. |
7 * | 7 * |
8 * The library was designed directly after the MPI library by | 8 * The library was designed directly after the MPI library by |
9 * Michael Fromberger but has been written from scratch with | 9 * Michael Fromberger but has been written from scratch with |
10 * additional optimizations in place. | 10 * additional optimizations in place. |
11 * | 11 * |
12 * The library is free for all purposes without any express | 12 * SPDX-License-Identifier: Unlicense |
13 * guarantee it works. | |
14 * | |
15 * Tom St Denis, [email protected], http://libtom.org | |
16 */ | 13 */ |
17 | 14 |
18 /* b = |a| | 15 /* b = |a| |
19 * | 16 * |
20 * Simple function copies the input and fixes the sign to positive | 17 * Simple function copies the input and fixes the sign to positive |
21 */ | 18 */ |
22 int | 19 int mp_abs(const mp_int *a, mp_int *b) |
23 mp_abs (mp_int * a, mp_int * b) | |
24 { | 20 { |
25 int res; | 21 int res; |
26 | 22 |
27 /* copy a to b */ | 23 /* copy a to b */ |
28 if (a != b) { | 24 if (a != b) { |
29 if ((res = mp_copy (a, b)) != MP_OKAY) { | 25 if ((res = mp_copy(a, b)) != MP_OKAY) { |
30 return res; | 26 return res; |
31 } | 27 } |
32 } | 28 } |
33 | 29 |
34 /* force the sign of b to positive */ | 30 /* force the sign of b to positive */ |
35 b->sign = MP_ZPOS; | 31 b->sign = MP_ZPOS; |
36 | 32 |
37 return MP_OKAY; | 33 return MP_OKAY; |
38 } | 34 } |
39 #endif | 35 #endif |
40 | 36 |
41 /* ref: $Format:%D$ */ | 37 /* ref: HEAD -> master, tag: v1.1.0 */ |
42 /* git commit: $Format:%H$ */ | 38 /* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */ |
43 /* commit time: $Format:%ai$ */ | 39 /* commit time: 2019-01-28 20:32:32 +0100 */ |