Mercurial > dropbear

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

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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_CMP_C 2 #ifdef BN_MP_CMP_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 /* compare two ints (signed)*/ 6 /* compare two ints (signed)*/
19 int 7 mp_ord mp_cmp(const mp_int *a, const mp_int *b)
20 mp_cmp (mp_int * a, mp_int * b)
21 { 8 {
22 /* compare based on sign */ 9 /* compare based on sign */
23 if (a->sign != b->sign) { 10 if (a->sign != b->sign) {
24 if (a->sign == MP_NEG) { 11 if (a->sign == MP_NEG) {
25 return MP_LT; 12 return MP_LT;
26 } else { 13 } else {
27 return MP_GT; 14 return MP_GT;
28 } 15 }
29 } 16 }
30 17
31 /* compare digits */ 18 /* compare digits */
32 if (a->sign == MP_NEG) { 19 if (a->sign == MP_NEG) {
33 /* if negative compare opposite direction */ 20 /* if negative compare opposite direction */
34 return mp_cmp_mag(b, a); 21 return mp_cmp_mag(b, a);
35 } else { 22 } else {
36 return mp_cmp_mag(a, b); 23 return mp_cmp_mag(a, b);
37 } 24 }
38 } 25 }
39 #endif 26 #endif
40
41 /* ref: $Format:%D$ */
42 /* git commit: $Format:%H$ */
43 /* commit time: $Format:%ai$ */