/* nag_elliptic_integral_F (s21bec) Example Program.
 *
 * Copyright 2008, Numerical Algorithms Group.
 *
 * Mark 9, 2009.
 */
/* Pre-processor includes */
#include <stdio.h>
#include <nag.h>
#include <nagx04.h>
#include <nag_stdlib.h>
#include <nags.h>
#include <nagx01.h>

int main(int argc, char *argv[])
{
  FILE     *fpout;
  /*Integer scalar and array declarations */
  Integer  exit_status = 0;
  Integer  ix;
  /*Double scalar and array declarations */
  double   dm, f, phi, pi;
  NagError fail;

  INIT_FAIL(fail);

  /* Check for command-line IO options */
  fpout = nag_example_file_io(argc, argv, "-results", NULL);
  fprintf(fpout, "%s\n",
          "nag_elliptic_integral_F (s21bec) Example Program Results");
  fprintf(fpout, "\n");
  fprintf(fpout, "%s\n", "    phi    dm       nag_elliptic_integral_F");
  fprintf(fpout, "\n");
  pi = nag_pi;
  for (ix = 1; ix <= 3; ix++)
    {
      phi = ix*pi/6.00e0;
      dm = ix*0.250e0;
      /*
       * nag_elliptic_integral_F (s21bec)
       * Elliptic integral of 1st kind, Legendre form, F( phi |m)
       */
      f = nag_elliptic_integral_F(phi, dm, &fail);
      if (fail.code != NE_NOERROR)
        {
          fprintf(fpout, "Error from nag_elliptic_integral_F (s21bec).\n%s\n",
                  fail.message);
          exit_status = 1;
          goto END;
        }
      fprintf(fpout, "%7.2f%7.2f%12.4f\n", phi, dm, f);
    }

 END:
  if (fpout != stdout) fclose(fpout);

  return exit_status;
}