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1.8.1.1
gecode
minimodel
lin-rel.hpp
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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, 2005
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*
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* Last modified:
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* $Date: 2010-02-03 21:13:34 +1100 (Wed, 03 Feb 2010) $ by $Author: schulte $
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* $Revision: 10262 $
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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 {
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/*
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* Operations for linear expressions
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*
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*/
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forceinline
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LinRel::LinRel(
void
) {}
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forceinline
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LinRel::LinRel(
const
LinExpr
& l,
IntRelType
irt0,
const
LinExpr
&
r
)
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: e(l-r), irt(irt0) {}
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forceinline
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LinRel::LinRel(
const
LinExpr
& l,
IntRelType
irt0,
int
r
)
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: e(l-r), irt(irt0) {}
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forceinline
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LinRel::LinRel(
int
l,
IntRelType
irt0,
const
LinExpr
&
r
)
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: e(l-r), irt(irt0) {}
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forceinline
IntRelType
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LinRel::neg(
IntRelType
irt) {
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switch
(irt) {
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case
IRT_EQ
:
return
IRT_NQ
;
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case
IRT_NQ
:
return
IRT_EQ
;
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case
IRT_LQ
:
return
IRT_GR
;
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case
IRT_LE
:
return
IRT_GQ
;
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case
IRT_GQ
:
return
IRT_LE
;
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case
IRT_GR
:
return
IRT_LQ
;
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default
:
GECODE_NEVER
;
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}
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return
IRT_LQ
;
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}
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forceinline
void
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LinRel::post
(
Home
home,
bool
t,
IntConLevel
icl)
const
{
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e.
post
(home,t ? irt : neg(irt),icl);
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}
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forceinline
void
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LinRel::post
(
Home
home,
const
BoolVar
&
b
,
bool
t,
IntConLevel
icl)
const
{
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e.
post
(home,t ? irt : neg(irt),b,icl);
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}
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}
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// STATISTICS: minimodel-any