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1.8.18
gecode
float
rounding.hpp
Go to the documentation of this file.
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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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* 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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*
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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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namespace
Gecode
{
namespace
Float {
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forceinline
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Rounding::Rounding
(
void
) {
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RoundingBase::init();
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}
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forceinline
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Rounding::~Rounding
(
void
) {}
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forceinline
FloatNum
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Rounding::median
(
FloatNum
x
,
FloatNum
y
) {
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return
RoundingBase::median(
x
,
y
);
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}
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#define GECODE_ROUND_OP(name) \
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forceinline FloatNum \
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Rounding::name##_down(FloatNum x, FloatNum y) { \
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return RoundingBase::name##_down(x,y); \
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} \
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forceinline FloatNum \
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Rounding::name##_up(FloatNum x, FloatNum y) { \
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return RoundingBase::name##_up(x,y); \
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}
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GECODE_ROUND_OP
(add)
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GECODE_ROUND_OP
(sub)
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GECODE_ROUND_OP
(mul)
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GECODE_ROUND_OP
(
div
)
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#undef GECODE_ROUND_OP
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#define GECODE_ROUND_FUN(name) \
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forceinline FloatNum \
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Rounding::name##_down(FloatNum x) { \
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return RoundingBase::name##_down(x); \
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} \
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forceinline FloatNum \
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Rounding::name##_up(FloatNum x) { \
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return RoundingBase::name##_up(x); \
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}
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GECODE_ROUND_FUN
(
sqrt
)
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#if defined(_M_X64) || defined(_M_IA64)
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// Workaround as MSVC on x64 does not have a rint function
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forceinline
FloatNum
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Rounding::int_down
(
FloatNum
x
) {
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return
floor(
x
);
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}
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forceinline
FloatNum
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Rounding::int_up
(
FloatNum
x
) {
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return
ceil(
x
);
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}
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#else
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GECODE_ROUND_FUN
(
int
)
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#endif
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#undef GECODE_ROUND_FUN
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}}
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// STATISTICS: float-var
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Gecode::Float::Rounding::int_down
FloatNum int_down(FloatNum x)
Return next downward-rounded integer of x (domain: )
Gecode::x
Post propagator for SetVar x
Definition:
set.hh:767
Gecode::y
Post propagator for SetVar SetOpType SetVar y
Definition:
set.hh:767
Gecode::Float::Rounding::int_up
FloatNum int_up(FloatNum x)
Return next upward-rounded integer of x (domain: )
Gecode::Float::Rounding::~Rounding
~Rounding(void)
Destructor (restores previous rounding mode)
Definition:
rounding.hpp:41
Gecode::Float::Rounding::Rounding
Rounding(void)
Default constructor (configures full rounding mode)
Definition:
rounding.hpp:37
Gecode::div
void div(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
Definition:
arithmetic.cpp:127
Gecode
Gecode toplevel namespace
GECODE_ROUND_FUN
#define GECODE_ROUND_FUN(name)
Definition:
rounding.hpp:65
Gecode::sqrt
void sqrt(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition:
arithmetic.cpp:102
Gecode::FloatNum
double FloatNum
Floating point number base type.
Definition:
float.hh:106
GECODE_ROUND_OP
#define GECODE_ROUND_OP(name)
Definition:
rounding.hpp:48
forceinline
#define forceinline
Definition:
config.hpp:185
Gecode::Float::Rounding::median
FloatNum median(FloatNum x, FloatNum y)
Return median of x and y (domain: )
Definition:
rounding.hpp:44