Java Double to Int doubleToInt64(Double r)

Description

double To Int

License

Open Source License

Parameter

Parameter	Description
r	a parameter

Declaration

public static Long doubleToInt64(Double r) 

Method Source Code

//package com.java2s;
/**//from   w w  w . j a  v a 2 s . com
 * SqlJetUtility.java
 * Copyright (C) 2009-2010 TMate Software Ltd
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * For information on how to redistribute this software under
 * the terms of a license other than GNU General Public License
 * contact TMate Software at support@sqljet.com
 */

public class Main {
    /**
     * @param r
     * @return
     */
    public static Long doubleToInt64(Double r) {
        if (r == null)
            return null;
        if (r == Double.NaN)
            return null;
        if (r == Double.POSITIVE_INFINITY)
            return null;
        if (r == Double.NEGATIVE_INFINITY)
            return null;
        final double rdbl = r.doubleValue();
        final double rint = Math.rint(rdbl);
        if (rdbl != rint)
            return null;
        return Long.valueOf(r.longValue());
    }
}

Related

1. doubleToInt(double deg)
2. doubleToInt(double[] doubles)
3. doubleToInt(double[] values)
4. doubleToInt(double[][] array)
5. doubleToInt100000(double d)
6. doubleToInt64Bits(double d)
7. doubleToInteger(Double num)
8. doubleToIntString(final double value)