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gecode
float
rounding.cpp
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/* -*- 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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typedef
int
mpfr_func
(mpfr_t,
const
__mpfr_struct*, mp_rnd_t);
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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 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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Gecode::x
Post propagator for SetVar x
Definition:
set.hh:767
Gecode::log
void log(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition:
transcendental.cpp:53
Gecode::tanh
FloatVal tanh(const FloatVal &x)
Definition:
val.hpp:468
Gecode::acosh
FloatVal acosh(const FloatVal &x)
Definition:
val.hpp:476
Gecode::sin
void sin(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition:
trigonometric.cpp:52
Gecode::asinh
FloatVal asinh(const FloatVal &x)
Definition:
val.hpp:472
Gecode::acos
void acos(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition:
trigonometric.cpp:59
Gecode
Gecode toplevel namespace
float.hh
Gecode::r
Post propagator for SetVar SetOpType SetVar SetRelType r
Definition:
set.hh:767
Gecode::FloatNum
double FloatNum
Floating point number base type.
Definition:
float.hh:106
Gecode::tan
void tan(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition:
trigonometric.cpp:80
Gecode::sinh
FloatVal sinh(const FloatVal &x)
Definition:
val.hpp:460
Gecode::atanh
FloatVal atanh(const FloatVal &x)
Definition:
val.hpp:480
Gecode::Float::mpfr_func
int mpfr_func(mpfr_t, const __mpfr_struct *, mp_rnd_t)
Type signatur of mpfr function.
Definition:
rounding.cpp:48
GECODE_GENR_FUNC
#define GECODE_GENR_FUNC(name)
Define mpfr functions with proper rounding.
Definition:
rounding.cpp:62
Gecode::asin
void asin(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition:
trigonometric.cpp:45
forceinline
#define forceinline
Definition:
config.hpp:185
Gecode::cosh
FloatVal cosh(const FloatVal &x)
Definition:
val.hpp:464
Gecode::atan
void atan(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition:
trigonometric.cpp:73
Gecode::f
Post propagator for f(x \diamond_{\mathit{op}} y) \sim_r z \f$ void rel(Home home
Gecode::exp
void exp(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition:
transcendental.cpp:45
Gecode::cos
void cos(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition:
trigonometric.cpp:66
Gecode::Float::invoke_mpfr
double invoke_mpfr(FloatNum x, mpfr_func f, mp_rnd_t r)
Routine to call mpfr function with proper rounding.
Definition:
rounding.cpp:52