channel.cpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
* Vincent Barichard <Vincent.Barichard@univ-angers.fr>
*
* Copyright:
* Christian Schulte, 2006
* Vincent Barichard, 2012
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include "test/float.hh"
#include <gecode/minimodel.hh>
namespace Test { namespace Float {
namespace Channel {
class Int : public Test {
public:
Int(Gecode::FloatNum st)
: Test("Channel::Int",2,-1,2,st,CPLT_ASSIGNMENT,false) {}
virtual MaybeType solution(const Assignment& x) const {
Gecode::FloatNum tmp;
return (((modf(x[0].min(),&tmp)==0) ||
(modf(x[0].max(),&tmp)==0))
&& (x[0]==x[1])) ? MT_TRUE : MT_FALSE;
}
virtual void post(Gecode::Space& home, Gecode::FloatVarArray& x) {
using namespace Gecode;
IntVar iv(home,-1000,1000);
channel(home, x[0], iv);
channel(home, iv, x[1]);
}
};
class Bool : public Test {
public:
Bool(Gecode::FloatNum st)
: Test("Channel::Bool",2,0,1,st,CPLT_ASSIGNMENT,false) {}
virtual MaybeType solution(const Assignment& x) const {
Gecode::FloatNum tmp;
return (((modf(x[0].min(),&tmp)==0) ||
(modf(x[0].max(),&tmp)==0))
&& (x[0]==x[1])) ? MT_TRUE : MT_FALSE;
}
virtual void post(Gecode::Space& home, Gecode::FloatVarArray& x) {
using namespace Gecode;
BoolVar bv(home,0,1);
channel(home, x[0], bv);
channel(home, bv, x[1]);
}
};
Gecode::FloatNum step1 = 0.7;
Gecode::FloatNum step2 = 0.1;
Int ci(step1);
Bool cb(step2);
}
}}
// STATISTICS: test-float
Gecode::BoolVar
Boolean integer variables.
Definition int.hh:512
Gecode::FloatVarArray
Float variable array.
Definition float.hh:1030
Gecode::IntVar
Integer variables.
Definition int.hh:371
Gecode::Space
Computation spaces.
Definition core.hpp:1742
Test::Float::Assignment
Base class for assignments
Definition float.hh:80
Test::Float::Channel::Bool
Test channel between float and Boolean
Definition channel.cpp:68
Test::Float::Channel::Bool::post
virtual void post(Gecode::Space &home, Gecode::FloatVarArray &x)
Post constraint on x.
Definition channel.cpp:81
Test::Float::Channel::Bool::Bool
Bool(Gecode::FloatNum st)
Construct and register test.
Definition channel.cpp:71
Test::Float::Channel::Bool::solution
virtual MaybeType solution(const Assignment &x) const
Check whether x is solution.
Definition channel.cpp:74
Test::Float::Channel::Int
Test channel between float and integer
Definition channel.cpp:46
Test::Float::Channel::Int::solution
virtual MaybeType solution(const Assignment &x) const
Check whether x is solution.
Definition channel.cpp:52
Test::Float::Channel::Int::post
virtual void post(Gecode::Space &home, Gecode::FloatVarArray &x)
Post constraint on x.
Definition channel.cpp:59
Test::Float::Channel::Int::Int
Int(Gecode::FloatNum st)
Construct and register test.
Definition channel.cpp:49
Gecode::FloatNum
double FloatNum
Floating point number base type.
Definition float.hh:106
minimodel.hh
Gecode
Gecode toplevel namespace
Gecode::channel
void channel(Home home, FloatVar x0, IntVar x1)
Post propagator for channeling a float and an integer variable .
Definition channel.cpp:41
Gecode::min
void min(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
Definition arithmetic.cpp:67
Gecode::max
void max(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
Definition arithmetic.cpp:49
Test::Float::Channel
Tests for channel constraints
Definition channel.cpp:43
Test::Float::Channel::step2
Gecode::FloatNum step2
Definition channel.cpp:90
Test::Float::Channel::cb
Bool cb(step2)
Test::Float::Channel::ci
Int ci(step1)
Test::Float::Channel::step1
Gecode::FloatNum step1
Definition channel.cpp:89
Test::Float
Testing domain floats.
Definition float.cpp:43
Test::Float::CPLT_ASSIGNMENT
@ CPLT_ASSIGNMENT
Definition float.hh:62
Test::Float::MaybeType
MaybeType
Type for comparisons and solutions.
Definition float.hh:51
Test::Float::MT_FALSE
@ MT_FALSE
Definition float.hh:52
Test::Float::MT_TRUE
@ MT_TRUE
Definition float.hh:53
Test
General test support.
Definition afc.cpp:39
float.hh