Contents

/*
 *  Main authors:
 *     Christian Schulte <[e-mail]>
 *
 *  Contributing authors:
 *     Guido Tack <[e-mail]>
 *
 *  Copyright:
 *     Christian Schulte, 2004
 *     Guido Tack, 2004
 *
 *  Last modified:
 *     $Date: 2006-08-04 16:03:17 +0200 (Fri, 04 Aug 2006) $ by $Author: schulte $
 *     $Revision: 3511 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
 *  See the file "LICENSE" for information on usage and
 *  redistribution of this file, and for a
 *     DISCLAIMER OF ALL WARRANTIES.
 *
 */

namespace Gecode {

  /*
   * BAB search engine
   *
   */

  namespace Search {

    forceinline
    BabEngine::BabEngine(unsigned int c_d0, unsigned int a_d,
			 Stop* st, size_t sz)
      : EngineCtrl(st,sz), rcs(a_d), cur(NULL),
	mark(0), es(ES_SOLUTION), best(NULL),
	c_d(c_d0), d(0) {}


    forceinline void
    BabEngine::init(Space* s) {
      cur = s;
    }

    forceinline size_t
    BabEngine::stacksize(void) const {
      return rcs.stacksize();
    }

    forceinline
    BabEngine::~BabEngine(void) {
      rcs.reset();
      delete best;
      delete cur;
    }
  }

  /*
   * Control for bab search engine
   *
   */

  template <class T>
  forceinline
  BAB<T>::BAB(T* s, unsigned int c_d, unsigned int a_d, Search::Stop* st)
    : Search::BAB(s,c_d,a_d,st,sizeof(T)) {}

  template <class T>
  forceinline T*
  BAB<T>::next(void) {
    Space *s1, *s2;
    while (e.explore(s1,s2) == Search::BabEngine::ES_CONSTRAIN)
      static_cast<T*>(s1)->constrain(static_cast<T*>(s2));
    return static_cast<T*>(s1);
  }




  /*
   * BAB convenience
   *
   */

  template <class T>
  T*
  bab(T* s, unsigned int c_d, unsigned int a_d, Search::Stop* st) {
    BAB<T> b(s,c_d,a_d,st);
    T* l = NULL;
    while (T* n = b.next()) {
      delete l; l = n;
    }
    return l;
  }

}

// STATISTICS: search-any

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
gecoder-with-gecode-0.7.1	ext/gecode-1.3.1/gecode/search/bab.icc