System.Numerics.Tests.ComplexTests.Abs_Advanced C# (CSharp) Method

        public static void Abs_Advanced(double real, double imaginary, double expected)
        {
            var complex = new Complex(real, imaginary);
            double abs = Complex.Abs(complex);

            Assert.True((abs.Equals(expected) || IsDiffTolerable(abs, expected)),
                string.Format("Abs({0}, {1}) Actual: {2}, Expected: {3}", real, imaginary, abs, expected));

            double absNegative = Complex.Abs(-complex);
            Assert.True(absNegative.Equals(abs),
                string.Format("Abs({0}, {1}) = {2} != Abs(-neg)={3}", real, imaginary, abs, absNegative));
        }