1 // SPDX-License-Identifier: BSD-2-Clause
2 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
3 *
4 * LibTomCrypt is a library that provides various cryptographic
5 * algorithms in a highly modular and flexible manner.
6 *
7 * The library is free for all purposes without any express
8 * guarantee it works.
9 */
10 #include "tomcrypt_private.h"
11
12 /**
13 @file pmac_ntz.c
14 PMAC implementation, internal function, by Tom St Denis
15 */
16
17 #ifdef LTC_PMAC
18
19 /**
20 Internal PMAC function
21 */
pmac_ntz(unsigned long x)22 int pmac_ntz(unsigned long x)
23 {
24 int c;
25 x &= 0xFFFFFFFFUL;
26 c = 0;
27 while ((x & 1) == 0) {
28 ++c;
29 x >>= 1;
30 }
31 return c;
32 }
33
34 #endif
35
36 /* ref: $Format:%D$ */
37 /* git commit: $Format:%H$ */
38 /* commit time: $Format:%ai$ */
39