Java Integer Create toInternal(int x)

Description

encode the classical Dimacs representation (negated integers for negated literals) into the internal format.

License

Open Source License

Parameter

Parameter	Description
x	the literal in Dimacs format

Return

the literal in internal format.

Declaration

public static int toInternal(int x) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * SAT4J: a SATisfiability library for Java Copyright (C) 2004-2008 Daniel Le Berre
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU Lesser General Public License Version 2.1 or later (the
 * "LGPL"), in which case the provisions of the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of the LGPL, and not to allow others to use your version of
 * this file under the terms of the EPL, indicate your decision by deleting
 * the provisions above and replace them with the notice and other provisions
 * required by the LGPL. If you do not delete the provisions above, a recipient
 * may use your version of this file under the terms of the EPL or the LGPL.
 * //from  www . ja v  a2s.c o  m
 * Based on the original MiniSat specification from:
 * 
 * An extensible SAT solver. Niklas Een and Niklas Sorensson. Proceedings of the
 * Sixth International Conference on Theory and Applications of Satisfiability
 * Testing, LNCS 2919, pp 502-518, 2003.
 *
 * See www.minisat.se for the original solver in C++.
 * 
 *******************************************************************************/

public class Main {
    /**
     * encode the classical Dimacs representation (negated integers for negated
     * literals) into the internal format.
     * 
     * @param x
     *            the literal in Dimacs format
     * @return the literal in internal format.
     * @since 2.2
     */
    public static int toInternal(int x) {
        return ((x < 0) ? ((-x) << 1) ^ 1 : (x << 1));
    }
}

Related

1. toIntegerOrNull(String s)
2. toIntegers(String[] values)
3. toIntegerValue(byte... bytes)
4. toIntegerValue(String value)
5. toInterfacesString(Class[] classes, StringBuffer sb)
6. toInternalClassName(String className)
7. toInternalClassName(String name)
8. toInternalDescription(String className)
9. toInternalForm(String internalForm)