bool.cpp

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2006
 *
 *  Last modified:
 *     $Date: 2009-02-05 11:48:53 +0100 (Thu, 05 Feb 2009) $ by $Author: schulte $
 *     $Revision: 8155 $
 *
 *  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
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 *  permit persons to whom the Software is furnished to do so, subject to
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#include <gecode/int.hh>

namespace Gecode { namespace Int {

  BoolVarImp BoolVarImp::s_one(1);
  BoolVarImp BoolVarImp::s_zero(0);

  ModEvent
  BoolVarImp::one_none(Space& home) {
    assert(none());
    bits() ^= (NONE ^ ONE);
    assert(one());
    IntDelta d(0);
    return notify(home,ME_BOOL_VAL,d);
  }

  ModEvent
  BoolVarImp::zero_none(Space& home) {
    assert(none());
    bits() ^= (NONE ^ ZERO);
    assert(zero());
    IntDelta d(1);
    return notify(home,ME_BOOL_VAL,d);
  }

}}

// STATISTICS: int-var