Accord.Tests.Interop.Math.LibBFGSComparisonTest.InvalidLineSearchTest2 C# (CSharp) Method

        public void InvalidLineSearchTest2()
        {
            int n = 10;

            Func<double[], double> function = (parameters) =>
            {
                return -(n * Math.Log(0) - n * Math.Log(Math.PI));
            };

            Func<double[], double[]> gradient = (parameters) =>
            {
                return new[] { 2.0, Double.NegativeInfinity };
            };

            double[] start = { 0, 0 };

            var lbfgs = new BroydenFletcherGoldfarbShanno(2, function, gradient);

            bool success = lbfgs.Minimize(start); 

            Assert.IsFalse(success);
        }