1 /* $NetBSD: bn_mp_to_signed_bin.c,v 1.1.1.2 2014/04/24 12:45:31 pettai Exp $ */ 2 3 #include <tommath.h> 4 #ifdef BN_MP_TO_SIGNED_BIN_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 /* store in signed [big endian] format */ mp_to_signed_bin(mp_int * a,unsigned char * b)21int mp_to_signed_bin (mp_int * a, unsigned char *b) 22 { 23 int res; 24 25 if ((res = mp_to_unsigned_bin (a, b + 1)) != MP_OKAY) { 26 return res; 27 } 28 b[0] = (unsigned char) ((a->sign == MP_ZPOS) ? 0 : 1); 29 return MP_OKAY; 30 } 31 #endif 32 33 /* Source: /cvs/libtom/libtommath/bn_mp_to_signed_bin.c,v */ 34 /* Revision: 1.4 */ 35 /* Date: 2006/12/28 01:25:13 */ 36