1 /* $NetBSD: bn_reverse.c,v 1.2 2017/01/28 21:31:47 christos 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 */ 42