/home/ntakagi/work/tcl8.5.1/libtommath/bn_mp_cmp.c Source File

00001 #include <tommath.h>
00002 #ifdef BN_MP_CMP_C
00003 /* LibTomMath, multiple-precision integer library -- Tom St Denis
00004  *
00005  * LibTomMath is a library that provides multiple-precision
00006  * integer arithmetic as well as number theoretic functionality.
00007  *
00008  * The library was designed directly after the MPI library by
00009  * Michael Fromberger but has been written from scratch with
00010  * additional optimizations in place.
00011  *
00012  * The library is free for all purposes without any express
00013  * guarantee it works.
00014  *
00015  * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
00016  */
00017 
00018 /* compare two ints (signed)*/
00019 int
00020 mp_cmp (mp_int * a, mp_int * b)
00021 {
00022   /* compare based on sign */
00023   if (a->sign != b->sign) {
00024      if (a->sign == MP_NEG) {
00025         return MP_LT;
00026      } else {
00027         return MP_GT;
00028      }
00029   }
00030   
00031   /* compare digits */
00032   if (a->sign == MP_NEG) {
00033      /* if negative compare opposite direction */
00034      return mp_cmp_mag(b, a);
00035   } else {
00036      return mp_cmp_mag(a, b);
00037   }
00038 }
00039 #endif
00040 
00041 /* $Source: /cvsroot/tcl/libtommath/bn_mp_cmp.c,v $ */
00042 /* $Revision: 1.1.1.3 $ */
00043 /* $Date: 2006/12/01 00:08:11 $ */