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/* mpz_cmp(u,v) -- Compare U, V. Return postive, zero, or negative
based on if U > V, U == V, or U < V.
Copyright (C) 1991 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
The GNU MP Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the GNU MP Library; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef BERKELEY_MP
#include "mp.h"
#endif
#include "gmp.h"
#include "gmp-impl.h"
#ifndef BERKELEY_MP
int
#ifdef __STDC__
mpz_cmp (const MP_INT *u, const MP_INT *v)
#else
mpz_cmp (u, v)
const MP_INT *u;
const MP_INT *v;
#endif
#else /* BERKELEY_MP */
int
#ifdef __STDC__
mcmp (const MP_INT *u, const MP_INT *v)
#else
mcmp (u, v)
const MP_INT *u;
const MP_INT *v;
#endif
#endif /* BERKELEY_MP */
{
mp_size usize = u->size;
mp_size vsize = v->size;
mp_size size;
mp_size i;
mp_limb a, b;
mp_srcptr up, vp;
if (usize != vsize)
return usize - vsize;
if (usize == 0)
return 0;
size = ABS (usize);
up = u->d;
vp = v->d;
i = size - 1;
do
{
a = up[i];
b = vp[i];
i--;
if (i < 0)
break;
}
while (a == b);
if (a == b)
return 0;
if ((a < b) == (usize < 0))
return 1;
else
return -1;
}
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