d43cffdfe2
MPC is a C library for the arithmetic of complex numbers with arbitrarily high precision and correct rounding of the result. It is built upon and follows the same principles as MPFR. GCC >= 4.2 requires MPC.
47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
/* Comparison functions.
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Copyright (C) INRIA, 2008, 2009
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This file is part of the MPC Library.
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The MPC Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The MPC Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the MPC Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#include "mpc-tests.h"
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/* comparisons, see description in mpc-tests.h */
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int
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same_mpfr_value (mpfr_ptr got, mpfr_ptr ref, int known_sign)
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{
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/* The sign of zeroes and infinities is checked only when
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known_sign is true. */
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if (mpfr_nan_p (got))
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return mpfr_nan_p (ref);
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if (mpfr_inf_p (got))
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return mpfr_inf_p (ref) &&
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(!known_sign || mpfr_signbit (got) == mpfr_signbit (ref));
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if (mpfr_zero_p (got))
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return mpfr_zero_p (ref) &&
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(!known_sign || mpfr_signbit (got) == mpfr_signbit (ref));
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return mpfr_cmp (got, ref) == 0;
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}
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int
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same_mpc_value (mpc_ptr got, mpc_ptr ref, known_signs_t known_signs)
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{
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return same_mpfr_value (MPC_RE (got), MPC_RE (ref), known_signs.re)
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&& same_mpfr_value (MPC_IM (got), MPC_IM (ref), known_signs.im);
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}
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