/* Copyright 2009-2016 David Hadka
*
* This file is part of the MOEA Framework.
*
* The MOEA Framework is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* The MOEA Framework is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the MOEA Framework. If not, see <http://www.gnu.org/licenses/>.
*/
package org.moeaframework;
import org.junit.Assert;
/**
* Compares floating-point numbers allowing a small absolute error when
* determining equality.
*/
public class AbsoluteError implements FloatingPointError {
/**
* The maximum absolute error permitted when considering if two floating-
* point numbers are equal.
*/
private final double epsilon;
/**
* Creates a comparator of floating point values allowing a small absolute
* error when determining equality.
*
* @param epsilon the maximum absolute error permitted when considering if
* two floating-point numbers are equal
*/
public AbsoluteError(double epsilon) {
super();
this.epsilon = epsilon;
}
@Override
public void assertEquals(double d1, double d2) {
Assert.assertEquals(d1, d2, epsilon);
}
}