org.drools.core.util.BitMaskUtil Maven / Gradle / Ivy
/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.drools.core.util;
public class BitMaskUtil {
public static boolean intersect(long mask1, long mask2) {
return (mask1 & mask2) != 0;
}
public static long set(long mask, int pos) {
if (pos < 0) throw new IllegalArgumentException("negative position");
return mask | (1L << pos);
}
public static long reset(long mask, int pos) {
if (pos < 0) throw new IllegalArgumentException("negative position");
return mask & (Long.MAX_VALUE - (1L << pos));
}
public static boolean isSet(long mask, long bit) {
return (mask & bit) == bit;
}
public static boolean isPositionSet(long mask, int pos) {
return isSet(mask, 1L << pos);
}
}