/* Comparison functions.

Copyright (C) 2008, 2009 Philippe Th\'eveny

This file is part of the MPC Library.

The MPC Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.

The MPC 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 Lesser General Public
License for more details.

You should have received a copy of the GNU Lesser General Public License
along with the MPC 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 "mpc-tests.h"

/* comparisons, see description in mpc-tests.h */
int
same_mpfr_value (mpfr_ptr got, mpfr_ptr ref, int known_sign)
{
   /* The sign of zeroes and infinities is checked only when
      known_sign is true.                                    */
   if (mpfr_nan_p (got))
      return mpfr_nan_p (ref);
   if (mpfr_inf_p (got))
      return mpfr_inf_p (ref) &&
            (!known_sign || mpfr_signbit (got) == mpfr_signbit (ref));
   if (mpfr_zero_p (got))
      return mpfr_zero_p (ref) &&
            (!known_sign || mpfr_signbit (got) == mpfr_signbit (ref));
   return mpfr_cmp (got, ref) == 0;
}

int
same_mpc_value (mpc_ptr got, mpc_ptr ref, known_signs_t known_signs)
{
   return    same_mpfr_value (MPC_RE (got), MPC_RE (ref), known_signs.re)
          && same_mpfr_value (MPC_IM (got), MPC_IM (ref), known_signs.im);
}