Mercurial > dropbear
comparison tomsfastmath/src/bin/fp_to_unsigned_bin.c @ 643:a362b62d38b2 dropbear-tfm
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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| children |
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| 642:33fd2f3499d2 | 643:a362b62d38b2 |
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| 1 /* TomsFastMath, a fast ISO C bignum library. | |
| 2 * | |
| 3 * This project is meant to fill in where LibTomMath | |
| 4 * falls short. That is speed ;-) | |
| 5 * | |
| 6 * This project is public domain and free for all purposes. | |
| 7 * | |
| 8 * Tom St Denis, [email protected] | |
| 9 */ | |
| 10 #include <tfm.h> | |
| 11 | |
| 12 void fp_to_unsigned_bin(fp_int *a, unsigned char *b) | |
| 13 { | |
| 14 int x; | |
| 15 fp_int t; | |
| 16 | |
| 17 fp_init_copy(&t, a); | |
| 18 | |
| 19 x = 0; | |
| 20 while (fp_iszero (&t) == FP_NO) { | |
| 21 b[x++] = (unsigned char) (t.dp[0] & 255); | |
| 22 fp_div_2d (&t, 8, &t, NULL); | |
| 23 } | |
| 24 fp_reverse (b, x); | |
| 25 } | |
| 26 | |
| 27 /* $Source$ */ | |
| 28 /* $Revision$ */ | |
| 29 /* $Date$ */ |