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Open-source constraint solver.
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/**
 * Copyright (c) 2016, Ecole des Mines de Nantes
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    This product includes software developed by the .
 * 4. Neither the name of the  nor the
 *    names of its contributors may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY  ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL  BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.chocosolver.solver.constraints.ternary;

import org.chocosolver.solver.constraints.Constraint;
import org.chocosolver.solver.variables.IntVar;

/**
 * X*Y = Z
 * 

 *
 * @author Charles Prud'homme
 * @since 26/01/11
 */
public class Times extends Constraint {

    private static boolean inIntBounds(IntVar x, IntVar y) {
        boolean l1 = inIntBounds((long) x.getLB() * (long) y.getLB());
        boolean l2 = inIntBounds((long) x.getUB() * (long) y.getLB());
        boolean l3 = inIntBounds((long) x.getLB() * (long) y.getUB());
        boolean l4 = inIntBounds((long) x.getUB() * (long) y.getUB());
        return l1 && l2 && l3 && l4;
    }

	/**
	 * @param l1 a long
	 * @return Integer.MIN_VALUE < l1 < Integer.MAX_VALUE
	 */
    public static boolean inIntBounds(long l1) {
        return l1 > Integer.MIN_VALUE && l1 < Integer.MAX_VALUE;
    }

    public Times(IntVar v1, IntVar v2, IntVar result) {
        super("Times",new PropTimesNaive(v1,v2,result));
//        if (!inIntBounds(v1, v2)) {
//            throw new SolverException("Integer overflow.\nConsider reducing the variable domains.");
//        }
    }
}