/*******************************************************************************
 * Progressia
 * Copyright (C) 2020  Wind Corporation
 *
 * 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 *******************************************************************************/
package ru.windcorp.progressia.common.util;

public class BinUtil {
	
	public static int closestGreaterPowerOf2(int x) {
		x |= x >> 1;
		x |= x >> 2;
		x |= x >> 4;
		x |= x >> 8;
		x |= x >> 16;
		return x + 1;
	}
	
	public static int roundToGreaterPowerOf2(int x) {
		return closestGreaterPowerOf2(x - 1);
	}
	
	public static boolean isPowerOf2(int x) {
		return (x > 0) && ((x & (x - 1)) == 0);
	}

}
