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annotate tomsfastmath/src/bin/fp_to_unsigned_bin.c @ 643:a362b62d38b2 dropbear-tfm

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Add tomsfastmath from git rev bfa4582842bc3bab42e4be4aed5703437049502a with Makefile.in renamed
author Matt Johnston <matt@ucc.asn.au>
date Wed, 23 Nov 2011 18:10:20 +0700
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a362b62d38b2 Add tomsfastmath from git rev bfa4582842bc3bab42e4be4aed5703437049502a
Matt Johnston <matt@ucc.asn.au>
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1 /* TomsFastMath, a fast ISO C bignum library.
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2 *
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3 * This project is meant to fill in where LibTomMath
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4 * falls short. That is speed ;-)
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5 *
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6 * This project is public domain and free for all purposes.
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7 *
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8 * Tom St Denis, [email protected]
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9 */
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10 #include <tfm.h>
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12 void fp_to_unsigned_bin(fp_int *a, unsigned char *b)
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13 {
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14 int x;
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15 fp_int t;
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17 fp_init_copy(&t, a);
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19 x = 0;
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20 while (fp_iszero (&t) == FP_NO) {
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21 b[x++] = (unsigned char) (t.dp[0] & 255);
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22 fp_div_2d (&t, 8, &t, NULL);
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23 }
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24 fp_reverse (b, x);
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25 }
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27 /* $Source$ */
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28 /* $Revision$ */
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29 /* $Date$ */