Here you can find the source of hash(double value)
Parameter | Description |
---|---|
value | the value to be hashed |
public static int hash(double value)
//package com.java2s; /*//from ww w . j a v a 2 s . co m * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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. */ public class Main { /** * Returns an integer hash code representing the given double value. * * @param value the value to be hashed * @return the hash code */ public static int hash(double value) { long bits = Double.doubleToLongBits(value); return (int) (bits ^ (bits >>> 32)); } /** * Returns an integer hash code representing the given double array value. * * @param value the value to be hashed (may be null) * @return the hash code * @since 1.2 */ public static int hash(double[] value) { if (value == null) { return 0; } int result = value.length; for (int i = 0; i < value.length; ++i) { result = result * 31 + hash(value[i]); } return result; } }