public void testScalarMultiplyInf() {
Complex z = new Complex(1, 1);
Complex w = z.multiply(Double.POSITIVE_INFINITY);
assertEquals(w.getReal(), inf, 0);
assertEquals(w.getImaginary(), inf, 0);
w = z.multiply(Double.NEGATIVE_INFINITY);
assertEquals(w.getReal(), inf, 0);
assertEquals(w.getImaginary(), inf, 0);
}
public void testScalarMultiply() {
Complex x = new Complex(3.0, 4.0);
double y = 2.0;
Complex z = x.multiply(y);
assertEquals(6.0, z.getReal(), 1.0e-5);
assertEquals(8.0, z.getImaginary(), 1.0e-5);
}
public void testMultiply() {
Complex x = new Complex(3.0, 4.0);
Complex y = new Complex(5.0, 6.0);
Complex z = x.multiply(y);
assertEquals(-9.0, z.getReal(), 1.0e-5);
assertEquals(38.0, z.getImaginary(), 1.0e-5);
}
public void testMultiplyNaNInf() {
Complex z = new Complex(1, 1);
Complex w = z.multiply(infOne);
assertEquals(w.getReal(), inf, 0);
assertEquals(w.getImaginary(), inf, 0);
// [MATH-164]
assertTrue(new Complex(1, 0).multiply(infInf).equals(Complex.INF));
assertTrue(new Complex(-1, 0).multiply(infInf).equals(Complex.INF));
assertTrue(new Complex(1, 0).multiply(negInfZero).equals(Complex.INF));
w = oneInf.multiply(oneNegInf);
assertEquals(w.getReal(), inf, 0);
assertEquals(w.getImaginary(), inf, 0);
w = negInfNegInf.multiply(oneNaN);
assertTrue(Double.isNaN(w.getReal()));
assertTrue(Double.isNaN(w.getImaginary()));
}
public static void testArithmetic() {
Complex c1 = new Complex(1, 2);
Complex c2 = new Complex(1, 3);
Complex sum = c1.add(c2);
System.out.println("(" + c1 + ")" + " + " + "(" + c2 + ")" + " = " + sum);
Complex product = c1.multiply(c2);
System.out.println("(" + c1 + ")" + " * " + "(" + c2 + ")" + " = " + product);
Complex product2 = c1.multiply(2);
System.out.println("(" + c1 + ")" + " * " + "2" + " = " + product2);
// show step to get abs value
// + c1.getReal() + "^2 " + "+" + c1.getComplex() + "^2" + " = "
System.out.println("Absolute value of " + "(" + c1 + ")" + " = " + c1.abs());
System.out.println();
}
public void testScalarMultiplyNaN() {
Complex x = new Complex(3.0, 4.0);
Complex z = x.multiply(Double.NaN);
assertTrue(z.isNaN());
}
public void testMultiplyNaN() {
Complex x = new Complex(3.0, 4.0);
Complex z = x.multiply(Complex.NaN);
assertTrue(z.isNaN());
}