/*
* Copyright (C) 2008-2015 by Holger Arndt
*
* This file is part of the Universal Java Matrix Package (UJMP).
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership and licensing.
*
* UJMP 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 2
* of the License, or (at your option) any later version.
*
* UJMP 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 UJMP; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
package org.ujmp.core.util;
public class Complex {
private final double real;
private final double img;
public Complex(final double real, final double img) {
this.real = real;
this.img = img;
}
public final double abs() {
return Math.sqrt(real * real + img * img);
}
public final Complex times(final Complex c2) {
final double real2 = this.real * c2.real - this.img * c2.img;
final double img2 = this.img * c2.real + this.real * c2.img;
return new Complex(real2, img2);
}
public final Complex plus(final Complex c2) {
final double real = this.real + c2.real;
final double img = this.img + c2.img;
return new Complex(real, img);
}
public final Complex minus(final Complex c2) {
final double real = this.real - c2.real;
final double img = this.img - c2.img;
return new Complex(real, img);
}
}