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comparison libtommath/bn_mp_cmp_d.c @ 1733:d529a52b2f7c coverity coverity

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merge coverity from main
author Matt Johnston <matt@ucc.asn.au>
date Fri, 26 Jun 2020 21:07:34 +0800
parents 1051e4eea25a
children
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1643:b59623a64678 1733:d529a52b2f7c
1 #include <tommath_private.h> 1 #include "tommath_private.h"
2 #ifdef BN_MP_CMP_D_C 2 #ifdef BN_MP_CMP_D_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 a digit */ 6 /* compare a digit */
19 int mp_cmp_d(mp_int * a, mp_digit b) 7 mp_ord mp_cmp_d(const mp_int *a, mp_digit b)
20 { 8 {
21 /* compare based on sign */ 9 /* compare based on sign */
22 if (a->sign == MP_NEG) { 10 if (a->sign == MP_NEG) {
23 return MP_LT; 11 return MP_LT;
24 } 12 }
25 13
26 /* compare based on magnitude */ 14 /* compare based on magnitude */
27 if (a->used > 1) { 15 if (a->used > 1) {
28 return MP_GT; 16 return MP_GT;
29 } 17 }
30 18
31 /* compare the only digit of a to b */ 19 /* compare the only digit of a to b */
32 if (a->dp[0] > b) { 20 if (a->dp[0] > b) {
33 return MP_GT; 21 return MP_GT;
34 } else if (a->dp[0] < b) { 22 } else if (a->dp[0] < b) {
35 return MP_LT; 23 return MP_LT;
36 } else { 24 } else {
37 return MP_EQ; 25 return MP_EQ;
38 } 26 }
39 } 27 }
40 #endif 28 #endif
41
42 /* ref: $Format:%D$ */
43 /* git commit: $Format:%H$ */
44 /* commit time: $Format:%ai$ */