Java Float Number Almost Equal almostEquals(final float value, final float expected)

Description

almost Equals

License

Apache License

Declaration

public static boolean almostEquals(final float value, final float expected) 

Method Source Code

//package com.java2s;
/*/*from www .  j av a 2  s .c o 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 {
    public static boolean almostEquals(final float value, final float expected) {
        return equals(value, expected, 1E-15f);
    }

    public static boolean almostEquals(final double value, final double expected) {
        return equals(value, expected, 1E-15d);
    }

    public static boolean equals(final float value, final float expected, final float delta) {
        if (Double.isNaN(value)) {
            return false;
        }
        if (Math.abs(expected - value) > delta) {
            return false;
        }
        return true;
    }

    public static boolean equals(final double value, final double expected, final double delta) {
        if (Double.isNaN(value)) {
            return false;
        }
        if (Math.abs(expected - value) > delta) {
            return false;
        }
        return true;
    }
}

Related

1. almostEqual(float a, float b, float maxRelativeError)