crypto/external/bsd/heimdal/dist/lib/hcrypto/libtommath/bn_reverse.c

   1 /*      $NetBSD: bn_reverse.c,v 1.1.1.2 2014/04/24 12:45:31 pettai Exp $        */
   2
   3 #include <tommath.h>
   4 #ifdef BN_REVERSE_C
   5 /* LibTomMath, multiple-precision integer library -- Tom St Denis
   6  *
   7  * LibTomMath is a library that provides multiple-precision
   8  * integer arithmetic as well as number theoretic functionality.
   9  *
  10  * The library was designed directly after the MPI library by
  11  * Michael Fromberger but has been written from scratch with
  12  * additional optimizations in place.
  13  *
  14  * The library is free for all purposes without any express
  15  * guarantee it works.
  16  *
  17  * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
  18  */
  19
  20 /* reverse an array, used for radix code */
  21 void
  22 bn_reverse (unsigned char *s, int len)
  23 {
  24   int     ix, iy;
  25   unsigned char t;
  26
  27   ix = 0;
  28   iy = len - 1;
  29   while (ix < iy) {
  30     t     = s[ix];
  31     s[ix] = s[iy];
  32     s[iy] = t;
  33     ++ix;
  34     --iy;
  35   }
  36 }
  37 #endif
  38
  39 /* Source: /cvs/libtom/libtommath/bn_reverse.c,v  */
  40 /* Revision: 1.4  */
  41 /* Date: 2006/12/28 01:25:13  */