test_params.c

Test for parameter reading in extra.h

Test for parameter reading in extra.h

Here is the typical skeleton file that I use when I need namelists.

The 3 key steps in main are (i) param declaration, (ii) adding parameters, (iii) cleanup.

init_param ();
add_param ("N", &N, "int");
cleanup_param ();

#include "../libs/extra.h"

Declare two global variable, nu and dh, which will be modified by the namelist.

double nu = 0.;
double dh[2] = {0., 1.};

int main(int argc,char* argv[]) {

The type of parameters that we can read in a namelist are “int”, “double”, and “array”

  init_param();
  add_param ("N", &N, "int");
  add_param ("nu", &nu, "double");
  add_param ("dh", &dh[0], "array");


  // Search for the configuration file with a given path or read params.in
  if (argc == 2)
    strcpy(file_param,argv[1]); // default: params.in

  read_params(file_param);

Create an output directory named outdir_0001 or use a higher number if 0001 already exists

  create_outdir();

copy the configuration file in that directory

  backup_config(file_param);

Free the params variable

  cleanup_param ();
}