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Import gmp 2.0.2

/* 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, 1993, 1994, 1996 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 Library General Public License as published by
the Free Software Foundation; either version 2 of the License, 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 Library General Public
License for more details.

You should have received a copy of the GNU Library General Public License
along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */

#ifdef BERKELEY_MP
#include "mp.h"
#endif
#include "gmp.h"
#include "gmp-impl.h"

#ifndef BERKELEY_MP
int
#if __STDC__
mpz_cmp (mpz_srcptr u, mpz_srcptr v)
#else
mpz_cmp (u, v)
     mpz_srcptr u;
     mpz_srcptr v;
#endif
#else /* BERKELEY_MP */
int
#if __STDC__
mcmp (mpz_srcptr u, mpz_srcptr v)
#else
mcmp (u, v)
     mpz_srcptr u;
     mpz_srcptr v;
#endif
#endif /* BERKELEY_MP */
{
  mp_size_t usize = u->_mp_size;
  mp_size_t vsize = v->_mp_size;
  mp_size_t size;
  mp_srcptr up, vp;
  int cmp;

  if (usize != vsize)
    return usize - vsize;

  if (usize == 0)
    return 0;

  size = ABS (usize);

  up = u->_mp_d;
  vp = v->_mp_d;

  cmp = mpn_cmp (up, vp, size);

  if (cmp == 0)
    return 0;

  if ((cmp < 0) == (usize < 0))
    return 1;
  else
    return -1;
}