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