/* RISO: an implementation of distributed belief networks.
* Copyright (C) 1999, Robert Dodier.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA, 02111-1307, USA,
* or visit the GNU web site, www.gnu.org.
*/
package riso.numerical;
public class Complex
{
public double real, imag;
public Complex() { real = imag = 0; }
public static void mul( Complex x, Complex y, Complex z )
{
z.real = x.real * y.real - x.imag * y.imag;
z.imag = x.real * y.imag + x.imag * y.real;
}
public static void sub( Complex x, Complex y, Complex z )
{
z.real = x.real - y.real;
z.imag = x.imag - y.imag;
}
public static void add( Complex x, Complex y, Complex z )
{
z.real = x.real + y.real;
z.imag = x.imag + y.imag;
}
}