Accord.Tests.Math.QuadraticObjectiveFunctionTest.FunctionTest4 C# (CSharp) Method

        public void FunctionTest4()
        {
            double x = 0;
            double y = 0;
            double z = 0;

            Func<double> expected = () => -x * y + y * z;
            var actual = new QuadraticObjectiveFunction("-x*y + y*z");

            for (int i = 0; i < 10; i++)
            {
                for (int j = 0; j < 10; j++)
                {
                    for (int k = 0; k < 10; k++)
                    {
                        x = (i - 5) / 10.0;
                        y = (j - 5) / 10.0;
                        z = (k - 5) / 10.0;

                        double a = actual.Function(new[] { x, y, z });
                        double e = expected();

                        Assert.AreEqual(e, a, 1e-10);
                        Assert.IsFalse(Double.IsNaN(a));
                        Assert.IsFalse(Double.IsNaN(e));
                    }
                }
            }
        }