Method abs

src/test/java/com/thealgorithms/maths/FFTTest.java:85–90

()

    // Testing the function abs, assertEqual test
    @Test
    void abs() {
        FFT.Complex complex1 = new FFT.Complex(2.0, 3.0);
        double abs = complex1.abs();
        assertEquals(Math.sqrt(13), abs);
    }

    // Testing the function divide complex, assertEqual test.
    @Test