Returns the smallest power of two that is greater than
/**
Copyright (C) 2009,2010 Tobias Domhan
This file is part of AndOpenGLCam.
AndObjViewer 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, either version 3 of the License, or
(at your option) any later version.
AndObjViewer 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 AndObjViewer. If not, see <http://www.gnu.org/licenses/>.
*/
//package edu.dhbw.andar;
/**
* @author Tobias Domhan
*
*/
class GenericFunctions {
/**
* returns the smallest power of two that is greater than
* or equal to the absolute value of x
* @param x
* @return
*/
static final public int nextPowerOfTwo(int x) {
double val = (double) x;
return (int) Math.pow(2, Math.ceil(log2(val)));
}
/**
* return the log of x base 2
* @param x
* @return
*/
static final public double log2(double x) {
return Math.log(x)/Math.log(2);
}
}
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