bn_mp_cmp.c revision 1.1.1.1.22.1
1/* $NetBSD: bn_mp_cmp.c,v 1.1.1.1.22.1 2014/08/10 06:47:29 tls Exp $ */ 2 3#include <tommath.h> 4#ifdef BN_MP_CMP_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/* compare two ints (signed)*/ 21int 22mp_cmp (mp_int * a, mp_int * b) 23{ 24 /* compare based on sign */ 25 if (a->sign != b->sign) { 26 if (a->sign == MP_NEG) { 27 return MP_LT; 28 } else { 29 return MP_GT; 30 } 31 } 32 33 /* compare digits */ 34 if (a->sign == MP_NEG) { 35 /* if negative compare opposite direction */ 36 return mp_cmp_mag(b, a); 37 } else { 38 return mp_cmp_mag(a, b); 39 } 40} 41#endif 42 43/* Source: /cvs/libtom/libtommath/bn_mp_cmp.c,v */ 44/* Revision: 1.4 */ 45/* Date: 2006/12/28 01:25:13 */ 46