Here you can find the source of hashCode(float value)
public static final int hashCode(float value)
//package com.java2s; /*/*w w w . j av a 2s. c om*/ * Copyright 2013 Lyor Goldstein * * 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. */ public class Main { public static final int hashCode(float value) { return Float.floatToIntBits(value); } public static final int hashCode(final double value) { return hashCode(Double.doubleToLongBits(value)); } public static final int hashCode(final long value) { if (value == 0L) { return 0; } int hiValue = (int) ((value >> 32) & 0xFFFFFFFF), loValue = (int) (value & 0xFFFFFFFF); if (hiValue == 0) { return loValue; } else if (loValue == 0) { return hiValue; } else { return loValue ^ hiValue; } } }