private static void gompertz_cdf_test() //****************************************************************************80 // // Purpose: // // GOMPERTZ_CDF_TEST tests GOMPERTZ_CDF // // Licensing: // // This code is distributed under the GNU LGPL license. // // Modified: // // 03 April 2016 // // Author: // // John Burkardt // { int i; int seed = 123456789; Console.WriteLine(""); Console.WriteLine("GOMPERTZ_CDF_TEST"); Console.WriteLine(" GOMPERTZ_CDF evaluates the Gompertz CDF;"); Console.WriteLine(" GOMPERTZ_CDF_INV inverts the Gompertz CDF."); Console.WriteLine(" GOMPERTZ_PDF evaluates the Gompertz PDF;"); const double a = 2.0; const double b = 3.0; Console.WriteLine(""); Console.WriteLine(" PDF parameter A = " + a + ""); Console.WriteLine(" PDF parameter B = " + b + ""); if (!Gompertz.gompertz_check(a, b)) { Console.WriteLine(""); Console.WriteLine("GOMPERTZ_CDF_TEST - Fatal error!"); Console.WriteLine(" The parameters are not legal."); return; } Console.WriteLine(""); Console.WriteLine(" X PDF CDF CDF_INV"); Console.WriteLine(""); for (i = 1; i <= 10; i++) { double x = Gompertz.gompertz_sample(a, b, ref seed); double pdf = Gompertz.gompertz_pdf(x, a, b); double cdf = Gompertz.gompertz_cdf(x, a, b); double x2 = Gompertz.gompertz_cdf_inv(cdf, a, b); Console.WriteLine(" " + x.ToString(CultureInfo.InvariantCulture).PadLeft(12) + " " + pdf.ToString(CultureInfo.InvariantCulture).PadLeft(12) + " " + cdf.ToString(CultureInfo.InvariantCulture).PadLeft(12) + " " + x2.ToString(CultureInfo.InvariantCulture).PadLeft(12) + ""); } }
private static void gompertz_sample_test() //****************************************************************************80 // // Purpose: // // GOMPERTZ_SAMPLE_TEST tests GOMPERTZ_SAMPLE. // // Licensing: // // This code is distributed under the GNU LGPL license. // // Modified: // // 03 April 2016 // // Author: // // John Burkardt // { const int SAMPLE_NUM = 1000; int i; int seed = 123456789; double[] x = new double [SAMPLE_NUM]; Console.WriteLine(""); Console.WriteLine("GOMPERTZ_SAMPLE_TEST"); Console.WriteLine(" GOMPERTZ_MEAN computes the Gompertz mean;"); Console.WriteLine(" GOMPERTZ_SAMPLE samples the Gompertz distribution;"); Console.WriteLine(" GOMPERTZ_VARIANCE computes the Gompertz variance;"); const double a = 2.0; const double b = 3.0; Console.WriteLine(""); Console.WriteLine(" PDF parameter A = " + a + ""); Console.WriteLine(" PDF parameter B = " + b + ""); if (!Gompertz.gompertz_check(a, b)) { Console.WriteLine(""); Console.WriteLine("GOMPERTZ_SAMPLE_TEST - Fatal error!"); Console.WriteLine(" The parameters are not legal."); return; } for (i = 0; i < SAMPLE_NUM; i++) { x[i] = Gompertz.gompertz_sample(a, b, ref seed); } double mean = typeMethods.r8vec_mean(SAMPLE_NUM, x); double variance = typeMethods.r8vec_variance(SAMPLE_NUM, x); double xmax = typeMethods.r8vec_max(SAMPLE_NUM, x); double xmin = typeMethods.r8vec_min(SAMPLE_NUM, x); Console.WriteLine(""); Console.WriteLine(" Sample size = " + SAMPLE_NUM + ""); Console.WriteLine(" Sample mean = " + mean + ""); Console.WriteLine(" Sample variance = " + variance + ""); Console.WriteLine(" Sample maximum = " + xmax + ""); Console.WriteLine(" Sample minimum = " + xmin + ""); }