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annotate libtommath/bn_reverse.c @ 289:497fddd4a94e

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code was untested and wrong.
author Matt Johnston <matt@ucc.asn.au>
date Wed, 08 Mar 2006 15:46:24 +0000
parents eed26cff980b
children 5ff8218bcee9
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1 #include <tommath.h>
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2 #ifdef BN_REVERSE_C
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3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
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4 *
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5 * LibTomMath is a library that provides multiple-precision
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6 * integer arithmetic as well as number theoretic functionality.
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7 *
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8 * The library was designed directly after the MPI library by
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9 * Michael Fromberger but has been written from scratch with
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10 * additional optimizations in place.
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11 *
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12 * The library is free for all purposes without any express
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13 * guarantee it works.
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14 *
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15 * Tom St Denis, [email protected], http://math.libtomcrypt.org
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16 */
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17
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18 /* reverse an array, used for radix code */
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19 void
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20 bn_reverse (unsigned char *s, int len)
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21 {
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22 int ix, iy;
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23 unsigned char t;
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24
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25 ix = 0;
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26 iy = len - 1;
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27 while (ix < iy) {
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28 t = s[ix];
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29 s[ix] = s[iy];
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30 s[iy] = t;
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31 ++ix;
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32 --iy;
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33 }
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34 }
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35 #endif