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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Christian Schulte <schulte@gecode.org>
5 *
6 * Copyright:
7 * Christian Schulte, 2016
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining
14 * a copy of this software and associated documentation files (the
15 * "Software"), to deal in the Software without restriction, including
16 * without limitation the rights to use, copy, modify, merge, publish,
17 * distribute, sublicense, and/or sell copies of the Software, and to
18 * permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be
22 * included in all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 *
32 */
33
34#ifndef GECODE_FLOAT_BOOL_HH
35#define GECODE_FLOAT_BOOL_HH
36
37#include <gecode/float.hh>
38
39/**
40 * \namespace Gecode::Float::Bool
41 * \brief Boolean propagators
42 */
43
44namespace Gecode { namespace Float { namespace Bool {
45
46 /**
47 * \brief If-then-else propagator
48 *
49 * Requires \code #include <gecode/float/bool.hh> \endcode
50 * \ingroup FuncFloatProp
51 */
52 template<class View>
53 class Ite : public Propagator {
54 protected:
55 /// View for condition
56 Int::BoolView b;
57 /// Views
58 View x0, x1, x2;
59 /// Constructor for cloning \a p
60 Ite(Space& home, Ite& p);
61 /// Constructor for creation
62 Ite(Home home, Int::BoolView b, View x0, View x1, View x2);
63 public:
64 /// Cost function (defined as low ternary)
65 virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
66 /// Schedule function
67 virtual void reschedule(Space& home);
68 /// Copy propagator during cloning
69 virtual Actor* copy(Space& home);
70 /// Perform propagation
71 virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
72 /// Post if-then-else propagator
73 static ExecStatus post(Home home, Int::BoolView b,
74 View x0, View x1, View x2);
75 /// Delete propagator and return its size
76 virtual size_t dispose(Space& home);
77 };
78
79}}}
80
81#include <gecode/float/bool/ite.hpp>
82
83#endif
84
85// STATISTICS: float-prop
86