92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Vincent Barichard <Vincent.Barichard@univ-angers.fr>
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*
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* Contributing authors:
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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2012
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* Vincent Barichard, 2012
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <gecode/float.hh>
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#ifdef GECODE_HAS_MPFR
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#include <gmp.h>
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#include <mpfr.h>
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namespace Gecode { namespace Float {
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/// Type signatur of mpfr function
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typedef int mpfr_func(mpfr_t, const __mpfr_struct*, mp_rnd_t);
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/// Routine to call mpfr function with proper rounding
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forceinline double
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invoke_mpfr(FloatNum x, mpfr_func f, mp_rnd_t r) {
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mpfr_t xx;
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mpfr_init_set_d(xx, x, GMP_RNDN);
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f(xx, xx, r);
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FloatNum res = mpfr_get_d(xx, r);
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mpfr_clear(xx);
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return res;
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}
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/// Define mpfr functions with proper rounding
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#define GECODE_GENR_FUNC(name) \
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FloatNum Rounding::name##_down(FloatNum x) { \
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return invoke_mpfr(x, mpfr_##name, GMP_RNDD); \
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} \
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FloatNum Rounding::name##_up(FloatNum x) { \
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return invoke_mpfr(x, mpfr_##name, GMP_RNDU); \
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}
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GECODE_GENR_FUNC(exp)
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GECODE_GENR_FUNC(log)
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GECODE_GENR_FUNC(sin)
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GECODE_GENR_FUNC(cos)
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GECODE_GENR_FUNC(tan)
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GECODE_GENR_FUNC(asin)
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GECODE_GENR_FUNC(acos)
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GECODE_GENR_FUNC(atan)
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GECODE_GENR_FUNC(sinh)
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GECODE_GENR_FUNC(cosh)
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GECODE_GENR_FUNC(tanh)
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GECODE_GENR_FUNC(asinh)
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GECODE_GENR_FUNC(acosh)
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GECODE_GENR_FUNC(atanh)
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#undef GECODE_GENR_FUNC
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}}
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#endif
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// STATISTICS: float-var
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