private static void dipole_sample_test()
//****************************************************************************80
//
// Purpose:
//
// DIPOLE_SAMPLE_TEST tests DIPOLE_SAMPLE;
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 24 January 2007
//
// Author:
//
// John Burkardt
//
{
const int SAMPLE_NUM = 1000;
const int TEST_NUM = 3;
int seed = 123456789;
double[] test_a =
{
0.0, Math.PI / 4.0, Math.PI / 2.0
}
;
double[] test_b =
{
1.0, 0.5, 0.0
}
;
int test_i;
double[] x = new double[SAMPLE_NUM];
Console.WriteLine("");
Console.WriteLine("DIPOLE_SAMPLE_TEST");
Console.WriteLine(" DIPOLE_SAMPLE samples the Dipole distribution;");
for (test_i = 0; test_i < TEST_NUM; test_i++)
{
double a = test_a[test_i];
double b = test_b[test_i];
Console.WriteLine("");
Console.WriteLine(" PDF parameter A = " + a + "");
Console.WriteLine(" PDF parameter B = " + b + "");
if (!Dipole.dipole_check(a, b))
{
Console.WriteLine("");
Console.WriteLine("DIPOLE_SAMPLE_TEST - Fatal error!");
Console.WriteLine(" The parameters are not legal.");
return;
}
int i;
for (i = 0; i < SAMPLE_NUM; i++)
{
x[i] = Dipole.dipole_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 + "");
}
}
private static void dipole_cdf_test()
//****************************************************************************80
//
// Purpose:
//
// DIPOLE_CDF_TEST tests DIPOLE_CDF.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 24 January 2007
//
// Author:
//
// John Burkardt
//
{
const int TEST_NUM = 3;
int seed = 123456789;
int test_i;
double[] test_a =
{
0.0, Math.PI / 4.0, Math.PI / 2.0
}
;
double[] test_b =
{
1.0, 0.5, 0.0
}
;
Console.WriteLine("");
Console.WriteLine("DIPOLE_CDF_TEST");
Console.WriteLine(" DIPOLE_CDF evaluates the Dipole CDF;");
Console.WriteLine(" DIPOLE_CDF_INV inverts the Dipole CDF.");
Console.WriteLine(" DIPOLE_PDF evaluates the Dipole PDF;");
for (test_i = 0; test_i < TEST_NUM; test_i++)
{
double a = test_a[test_i];
double b = test_b[test_i];
Console.WriteLine("");
Console.WriteLine(" PDF parameter A = " + a + "");
Console.WriteLine(" PDF parameter B = " + b + "");
if (!Dipole.dipole_check(a, b))
{
Console.WriteLine("");
Console.WriteLine("DIPOLE_CDF_TEST - Fatal error!");
Console.WriteLine(" The parameters are not legal.");
return;
}
Console.WriteLine("");
Console.WriteLine(" X PDF CDF CDF_INV");
Console.WriteLine("");
int i;
for (i = 1; i <= 10; i++)
{
double x = Dipole.dipole_sample(a, b, ref seed);
double pdf = Dipole.dipole_pdf(x, a, b);
double cdf = Dipole.dipole_cdf(x, a, b);
double x2 = Dipole.dipole_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) + "");
}
}
}
