1/* comparisons.c -- Comparison functions.
2
3Copyright (C) 2008, 2009, 2011 INRIA
4
5This file is part of GNU MPC.
6
7GNU MPC is free software; you can redistribute it and/or modify it under
8the terms of the GNU Lesser General Public License as published by the
9Free Software Foundation; either version 3 of the License, or (at your
10option) any later version.
11
12GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
14FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
15more details.
16
17You should have received a copy of the GNU Lesser General Public License
18along with this program. If not, see http://www.gnu.org/licenses/ .
19*/
20
21#include "mpc-tests.h"
22
23/* comparisons, see description in mpc-tests.h */
24int
25same_mpfr_value (mpfr_ptr got, mpfr_ptr ref, int known_sign)
26{
27   /* The sign of zeroes and infinities is checked only when
28      known_sign is true.                                    */
29   if (mpfr_nan_p (got))
30      return mpfr_nan_p (ref);
31   if (mpfr_inf_p (got))
32      return mpfr_inf_p (ref) &&
33            (!known_sign || mpfr_signbit (got) == mpfr_signbit (ref));
34   if (mpfr_zero_p (got))
35      return mpfr_zero_p (ref) &&
36            (!known_sign || mpfr_signbit (got) == mpfr_signbit (ref));
37   return mpfr_cmp (got, ref) == 0;
38}
39
40int
41same_mpc_value (mpc_ptr got, mpc_ptr ref, known_signs_t known_signs)
42{
43   return    same_mpfr_value (mpc_realref (got), mpc_realref (ref), known_signs.re)
44          && same_mpfr_value (mpc_imagref (got), mpc_imagref (ref), known_signs.im);
45}
46