/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hashtable;
import java.util.Random;
public class RandomGen {
private int which = 0;
private Random randJ;
private MT randMT;
private R250_521 randR;
public RandomGen(int which) {
this.which = which;
randJ = new Random();
randMT = new MT();
randR = new R250_521();
}
public long next() {
switch (which) {
case 1:
return randJ.nextLong();
case 2:
return randMT.random() * randMT.random();
case 3:
return randR.random() * randR.random();
default:
return 0;
}
}
}