Mercurial > dropbear
comparison libtommath/bn_mp_to_signed_bin.c @ 1436:60fc6476e044
Update to libtommath v1.0
author | Matt Johnston <matt@ucc.asn.au> |
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date | Sat, 24 Jun 2017 22:37:14 +0800 |
parents | 5ff8218bcee9 |
children | 8bba51a55704 |
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1435:f849a5ca2efc | 1436:60fc6476e044 |
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1 #include <tommath.h> | 1 #include <tommath_private.h> |
2 #ifdef BN_MP_TO_SIGNED_BIN_C | 2 #ifdef BN_MP_TO_SIGNED_BIN_C |
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis | 3 /* LibTomMath, multiple-precision integer library -- Tom St Denis |
4 * | 4 * |
5 * LibTomMath is a library that provides multiple-precision | 5 * LibTomMath is a library that provides multiple-precision |
6 * integer arithmetic as well as number theoretic functionality. | 6 * integer arithmetic as well as number theoretic functionality. |
10 * additional optimizations in place. | 10 * additional optimizations in place. |
11 * | 11 * |
12 * The library is free for all purposes without any express | 12 * The library is free for all purposes without any express |
13 * guarantee it works. | 13 * guarantee it works. |
14 * | 14 * |
15 * Tom St Denis, [email protected], http://math.libtomcrypt.com | 15 * Tom St Denis, [email protected], http://libtom.org |
16 */ | 16 */ |
17 | 17 |
18 /* store in signed [big endian] format */ | 18 /* store in signed [big endian] format */ |
19 int mp_to_signed_bin (mp_int * a, unsigned char *b) | 19 int mp_to_signed_bin (mp_int * a, unsigned char *b) |
20 { | 20 { |
21 int res; | 21 int res; |
22 | 22 |
23 if ((res = mp_to_unsigned_bin (a, b + 1)) != MP_OKAY) { | 23 if ((res = mp_to_unsigned_bin (a, b + 1)) != MP_OKAY) { |
24 return res; | 24 return res; |
25 } | 25 } |
26 b[0] = (unsigned char) ((a->sign == MP_ZPOS) ? 0 : 1); | 26 b[0] = (a->sign == MP_ZPOS) ? (unsigned char)0 : (unsigned char)1; |
27 return MP_OKAY; | 27 return MP_OKAY; |
28 } | 28 } |
29 #endif | 29 #endif |
30 | 30 |
31 /* $Source: /cvs/libtom/libtommath/bn_mp_to_signed_bin.c,v $ */ | 31 /* $Source$ */ |
32 /* $Revision: 1.3 $ */ | 32 /* $Revision$ */ |
33 /* $Date: 2006/03/31 14:18:44 $ */ | 33 /* $Date$ */ |