1 #include <tommath.h> 2 #ifdef BN_MP_ABS_C 3 /* LibTomMath, multiple-precision integer library -- Tom St Denis 4 * 5 * LibTomMath is a library that provides multiple-precision 6 * integer arithmetic as well as number theoretic functionality. 7 * 8 * The library was designed directly after the MPI library by 9 * Michael Fromberger but has been written from scratch with 10 * additional optimizations in place. 11 * 12 * The library is free for all purposes without any express 13 * guarantee it works. 14 * 15 * Tom St Denis, tomstdenis (at) gmail.com, http://math.libtomcrypt.com 16 */ 17 18 /* b = |a| 19 * 20 * Simple function copies the input and fixes the sign to positive 21 */ 22 int 23 mp_abs (mp_int * a, mp_int * b) 24 { 25 int res; 26 27 /* copy a to b */ 28 if (a != b) { 29 if ((res = mp_copy (a, b)) != MP_OKAY) { 30 return res; 31 } 32 } 33 34 /* force the sign of b to positive */ 35 b->sign = MP_ZPOS; 36 37 return MP_OKAY; 38 } 39 #endif 40 41 /* $Source: /cvs/libtom/libtommath/bn_mp_abs.c,v $ */ 42 /* $Revision: 1.3 $ */ 43 /* $Date: 2006/03/31 14:18:44 $ */ 44
