private static void sgmg_create_rule(int dim_num, int level_max,
int[] rule, int[] growth, int[] np, double[] p,
Func <int, int, double[], double[], double[]>[] gw_compute_points,
Func <int, int, double[], double[], double[]>[] gw_compute_weights,
double tol, string file_name)
//***************************************************************************80
//
// Purpose:
//
// SGMG_CREATE_RULE creates the requested rule and writes it to a file.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 02 July 2013
//
// Author:
//
// John Burkardt
//
// Parameters:
//
// Input, integer DIM_NUM, the spatial dimension.
//
// Input, integer LEVEL_MAX, the level that defines the grid.
//
// Input, int RULE[DIM_NUM], the rule in each dimension.
// 1, "CC", Clenshaw Curtis, Closed Fully Nested.
// 2, "F2", Fejer Type 2, Open Fully Nested.
// 3, "GP", Gauss Patterson, Open Fully Nested.
// 4, "GL", Gauss Legendre, Open Weakly Nested.
// 5, "GH", Gauss Hermite, Open Weakly Nested.
// 6, "GGH", Generalized Gauss Hermite, Open Weakly Nested.
// 7, "LG", Gauss Laguerre, Open Non Nested.
// 8, "GLG", Generalized Gauss Laguerre, Open Non Nested.
// 9, "GJ", Gauss Jacobi, Open Non Nested.
// 10, "HGK", Hermite Genz-Keister, Open Fully Nested.
// 11, "UO", User supplied Open, presumably Non Nested.
// 12, "UC", User supplied Closed, presumably Non Nested.
//
// Input, int GROWTH[DIM_NUM], the growth rule in each dimension.
// 0, "DF", default growth associated with this quadrature rule;
// 1, "SL", slow linear, L+1;
// 2 "SO", slow linear odd, O=1+2((L+1)/2)
// 3, "ML", moderate linear, 2L+1;
// 4, "SE", slow exponential;
// 5, "ME", moderate exponential;
// 6, "FE", full exponential.
//
// Input, int NP[RULE_NUM], the number of parameters used by each rule.
//
// Input, double P[sum(NP[*])], the parameters needed by each rule.
//
// Input, void ( *GW_COMPUTE_POINTS[] ) ( int order, int np, double p[], double x[] ),
// an array of pointers to functions which return the 1D quadrature points
// associated with each spatial dimension for which a Golub Welsch rule
// is used.
//
// Input, void ( *GW_COMPUTE_WEIGHTS[] ) ( int order, int np, double p[], double w[] ),
// an array of pointers to functions which return the 1D quadrature weights
// associated with each spatial dimension for which a Golub Welsch rule
// is used.
//
// Input, double TOL, a tolerance for point equality.
//
// Input, string FILE_NAME, the main name of the output files.
//
{
Console.WriteLine("");
Console.WriteLine("SGMG_CREATE_RULE");
Console.WriteLine(" Create the requested sparse grid rule, and write it");
Console.WriteLine(" to X, W and R files.");
//
// Compute necessary data.
//
int point_total_num = SGMG.sgmg_size_total(dim_num,
level_max, rule, growth);
int point_num = SGMG.sgmg_size(dim_num, level_max,
rule, np, p, gw_compute_points, tol, growth);
int[] sparse_unique_index = new int[point_total_num];
SGMG.sgmg_unique_index(dim_num, level_max, rule,
np, p, gw_compute_points, tol, point_num, point_total_num,
growth, ref sparse_unique_index);
int[] sparse_order = new int[dim_num * point_num];
int[] sparse_index = new int[dim_num * point_num];
SGMG.sgmg_index(dim_num, level_max, rule, point_num,
point_total_num, sparse_unique_index, growth, ref sparse_order, ref sparse_index);
//
// Compute points and weights.
//
double[] sparse_point = new double [dim_num * point_num];
SGMG.sgmg_point(dim_num, level_max, rule, np,
p, gw_compute_points, point_num, sparse_order, sparse_index,
growth, ref sparse_point);
double[] sparse_weight = new double[point_num];
SGMG.sgmg_weight(dim_num, level_max, rule, np,
p, gw_compute_weights, point_num, point_total_num, sparse_unique_index,
growth, ref sparse_weight);
//
// Write points and weights to files.
//
SGMG.sgmg_write(dim_num, rule, np, p,
point_num, sparse_weight, sparse_point, file_name);
}
