float-rel.hpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Vincent Barichard <Vincent.Barichard@univ-angers.fr>
*
* Copyright:
* 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,
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* 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,
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#ifdef GECODE_HAS_FLOAT_VARS
namespace Gecode {
/*
* Operations for linear float relations
*
*/
forceinline
LinFloatRel::LinFloatRel(void) {}
forceinline
LinFloatRel::LinFloatRel(const LinFloatExpr& l, FloatRelType frt0, const LinFloatExpr& r)
: e(l-r), frt(frt0) {}
forceinline
LinFloatRel::LinFloatRel(const LinFloatExpr& l, FloatRelType frt0, FloatVal r)
: e(l-r), frt(frt0) {}
forceinline
LinFloatRel::LinFloatRel(FloatVal l, FloatRelType frt0, const LinFloatExpr& r)
: e(l-r), frt(frt0) {}
forceinline FloatRelType
LinFloatRel::neg(FloatRelType frt) {
switch (frt) {
case FRT_EQ: return FRT_NQ;
case FRT_NQ: return FRT_EQ;
case FRT_LQ: return FRT_GR;
case FRT_LE: return FRT_GQ;
case FRT_GQ: return FRT_LE;
case FRT_GR: return FRT_LQ;
default: GECODE_NEVER;
}
return FRT_LQ;
}
forceinline void
LinFloatRel::post(Home home, bool t) const {
e.post(home,t ? frt : neg(frt));
}
forceinline void
LinFloatRel::post(Home home, const BoolVar& b, bool t) const {
e.post(home,t ? frt : neg(frt),b);
}
}
#endif
// STATISTICS: minimodel-any
Gecode::BoolVar
Boolean integer variables.
Definition int.hh:512
Gecode::FloatVal
Float value type.
Definition float.hh:334
Gecode::Home
Home class for posting propagators
Definition core.hpp:856
Gecode::LinFloatExpr
Float expressions
Definition minimodel.hh:822
Gecode::LinFloatRel::post
void post(Home home, bool t) const
Post propagator for relation (if t is false for negated relation).
Definition float-rel.hpp:72
Gecode::FloatRelType
FloatRelType
Relation types for floats.
Definition float.hh:1068
Gecode::FRT_EQ
@ FRT_EQ
Equality ( ).
Definition float.hh:1069
Gecode::FRT_GR
@ FRT_GR
Greater ( ).
Definition float.hh:1074
Gecode::FRT_NQ
@ FRT_NQ
Disequality ( ).
Definition float.hh:1070
Gecode::FRT_LE
@ FRT_LE
Less ( ).
Definition float.hh:1072
Gecode::FRT_LQ
@ FRT_LQ
Less or equal ( ).
Definition float.hh:1071
Gecode::FRT_GQ
@ FRT_GQ
Greater or equal ( ).
Definition float.hh:1073
Gecode
Gecode toplevel namespace
forceinline
#define forceinline
Definition config.hpp:187
GECODE_NEVER
#define GECODE_NEVER
Assert that this command is never executed.
Definition macros.hpp:56