Here you can find the source of shiftsForNextPowerOfTwo(final int targetSize)
public static int shiftsForNextPowerOfTwo(final int targetSize)
//package com.java2s; /*/*from w w w .j ava2s.c om*/ * @(#)$Id$$ * * Copyright 2006-2008 Makoto YUI * * Licensed 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. * * Contributors: * Makoto YUI - initial implementation */ public class Main { public static int shiftsForNextPowerOfTwo(final int targetSize) { int i; for (i = 0; (1 << i) < targetSize; i++) ; return i; } }