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      1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
      2  *
      3  * LibTomCrypt is a library that provides various cryptographic
      4  * algorithms in a highly modular and flexible manner.
      5  *
      6  * The library is free for all purposes without any express
      7  * guarantee it works.
      8  *
      9  * Tom St Denis, tomstdenis (at) gmail.com, http://libtomcrypt.com
     10  */
     11 #include "tomcrypt.h"
     12 
     13 /**
     14    @file pmac_ntz.c
     15    PMAC implementation, internal function, by Tom St Denis
     16 */
     17 
     18 #ifdef LTC_PMAC
     19 
     20 /**
     21   Internal PMAC function
     22 */
     23 int pmac_ntz(unsigned long x)
     24 {
     25    int c;
     26    x &= 0xFFFFFFFFUL;
     27    c = 0;
     28    while ((x & 1) == 0) {
     29       ++c;
     30       x >>= 1;
     31    }
     32    return c;
     33 }
     34 
     35 #endif
     36 
     37 /* $Source: /cvs/libtom/libtomcrypt/src/mac/pmac/pmac_ntz.c,v $ */
     38 /* $Revision: 1.5 $ */
     39 /* $Date: 2006/11/03 00:39:49 $ */
     40