/* mpz_swap (dest_integer, src_integer) -- Swap U and V.

Copyright (C) 1997, 1998 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. */

#include "gmp.h"
#include "gmp-impl.h"

void
#if __STDC__
mpz_swap (mpz_ptr u, mpz_ptr v)
#else
mpz_swap (u, v)
     mpz_ptr u;
     mpz_ptr v;
#endif
{
  mp_ptr up, vp;
  mp_size_t usize, vsize;
  mp_size_t ualloc, valloc;

  ualloc = u->_mp_alloc;
  valloc = v->_mp_alloc;
  v->_mp_alloc = ualloc;
  u->_mp_alloc = valloc;

  usize = u->_mp_size;
  vsize = v->_mp_size;
  v->_mp_size = usize;
  u->_mp_size = vsize;

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