bn_reverse.c
Go to the documentation of this file.00001 #include <tommath.h> 00002 #ifdef BN_REVERSE_C 00003 /* LibTomMath, multiple-precision integer library -- Tom St Denis 00004 * 00005 * LibTomMath is a library that provides multiple-precision 00006 * integer arithmetic as well as number theoretic functionality. 00007 * 00008 * The library was designed directly after the MPI library by 00009 * Michael Fromberger but has been written from scratch with 00010 * additional optimizations in place. 00011 * 00012 * The library is free for all purposes without any express 00013 * guarantee it works. 00014 * 00015 * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com 00016 */ 00017 00018 /* reverse an array, used for radix code */ 00019 void 00020 bn_reverse (unsigned char *s, int len) 00021 { 00022 int ix, iy; 00023 unsigned char t; 00024 00025 ix = 0; 00026 iy = len - 1; 00027 while (ix < iy) { 00028 t = s[ix]; 00029 s[ix] = s[iy]; 00030 s[iy] = t; 00031 ++ix; 00032 --iy; 00033 } 00034 } 00035 #endif 00036 00037 /* $Source: /cvsroot/tcl/libtommath/bn_reverse.c,v $ */ 00038 /* $Revision: 1.1.1.3 $ */ 00039 /* $Date: 2006/12/01 00:08:11 $ */
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