1 /* comparisons.c -- Comparison functions. 2 3 Copyright (C) 2008, 2009, 2011 INRIA 4 5 This file is part of GNU MPC. 6 7 GNU MPC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU Lesser General Public License as published by the 9 Free Software Foundation; either version 3 of the License, or (at your 10 option) any later version. 11 12 GNU MPC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 14 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for 15 more details. 16 17 You should have received a copy of the GNU Lesser General Public License 18 along 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 */ 24 int 25 same_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 40 int 41 same_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