/*
* Copyright 2007-2010 Sun Microsystems, Inc.
*
* This file is part of Project Darkstar Server.
*
* Project Darkstar Server is free software: you can redistribute it
* and/or modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation and
* distributed hereunder to you.
*
* Project Darkstar Server 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*/
package com.sun.sgs.impl.util;
/** Utility methods for working with numbers. */
public final class Numbers {
/** This class should not be instantiated. */
private Numbers() { }
/**
* A utility method that adds two non-negative {@code long}s, returning
* {@link Long#MAX_VALUE} if the value would overflow.
*
* @param x first value
* @param y second value
* @return the sum
* @throws IllegalArgumentException if either argument is negative
*/
public static long addCheckOverflow(long x, long y) {
if (x < 0 || y < 0) {
throw new IllegalArgumentException(
"The arguments must not be negative");
}
long result = x + y;
return (result >= 0) ? result : Long.MAX_VALUE;
}
}