io.activej.common.HashUtils Maven / Gradle / Ivy
/*
* Copyright (C) 2020 ActiveJ LLC.
*
* 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.
*/
package io.activej.common;
public final class HashUtils {
public static long murmur3hash(long k) {
k ^= k >>> 33;
k *= 0xff51afd7ed558ccdL;
k ^= k >>> 33;
k *= 0xc4ceb9fe1a85ec53L;
k ^= k >>> 33;
return k;
}
public static int murmur3hash(int firstHash, int secondHash) {
return (int) murmur3hash(((long) firstHash << 32) | (secondHash & 0xFFFFFFFFL));
}
public static int murmur3hash(int k) {
return (int) murmur3hash((long) k);
}
}