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comparison libtommath/bn_mp_rshd.c @ 1436:60fc6476e044

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Update to libtommath v1.0
author Matt Johnston <matt@ucc.asn.au>
date Sat, 24 Jun 2017 22:37:14 +0800
parents 5ff8218bcee9
children 8bba51a55704
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1435:f849a5ca2efc 1436:60fc6476e044
1 #include <tommath.h> 1 #include <tommath_private.h>
2 #ifdef BN_MP_RSHD_C 2 #ifdef BN_MP_RSHD_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.
10 * additional optimizations in place. 10 * additional optimizations in place.
11 * 11 *
12 * The library is free for all purposes without any express 12 * The library is free for all purposes without any express
13 * guarantee it works. 13 * guarantee it works.
14 * 14 *
15 * Tom St Denis, [email protected], http://math.libtomcrypt.com 15 * Tom St Denis, [email protected], http://libtom.org
16 */ 16 */
17 17
18 /* shift right a certain amount of digits */ 18 /* shift right a certain amount of digits */
19 void mp_rshd (mp_int * a, int b) 19 void mp_rshd (mp_int * a, int b)
20 { 20 {
30 mp_zero (a); 30 mp_zero (a);
31 return; 31 return;
32 } 32 }
33 33
34 { 34 {
35 register mp_digit *bottom, *top; 35 mp_digit *bottom, *top;
36 36
37 /* shift the digits down */ 37 /* shift the digits down */
38 38
39 /* bottom */ 39 /* bottom */
40 bottom = a->dp; 40 bottom = a->dp;
65 /* remove excess digits */ 65 /* remove excess digits */
66 a->used -= b; 66 a->used -= b;
67 } 67 }
68 #endif 68 #endif
69 69
70 /* $Source: /cvs/libtom/libtommath/bn_mp_rshd.c,v $ */ 70 /* $Source$ */
71 /* $Revision: 1.3 $ */ 71 /* $Revision$ */
72 /* $Date: 2006/03/31 14:18:44 $ */ 72 /* $Date$ */