/* nag_complex_airy_ai (s17dgc) Example Program.
 *
 * Copyright 2002 Numerical Algorithms Group.
 *
 * Mark 7, 2002.
 */

#include <nag.h>
#include <stdio.h>
#include <nag_stdlib.h>
#include <nags.h>

int main(void)
{
  Complex z, ai;
  Integer nz;
  Nag_ScaleResType scal_enum;
  Nag_FunType deriv_enum;
  char deriv, scal;

  Integer exit_status = EXIT_SUCCESS;
  NagError fail;

  INIT_FAIL(fail);

  /* Skip heading in data file */
  Vscanf("%*[^\n]");
  Vprintf("nag_complex_airy_ai (s17dgc) Example Program Results\n");
  Vprintf("  deriv         z         scal          ai        nz\n");
  while (scanf(" '%c' (%lf,%lf) '%c'%*[^\n] ",
               &deriv, &z.re, &z.im, &scal) != EOF)
    {
      /* Convert scal character to enum */
      if (scal == 's')
        {
          scal_enum = Nag_ScaleRes;
        }
      else if (scal == 'u')
        {
          scal_enum = Nag_UnscaleRes;
        }
      else
        {
          Vprintf("Unrecognised character for Nag_ScaleResType type\n");
          exit_status = -1;
          goto END;
        }
      /* Convert deriv character to enum */
      if (deriv == 'f')
        {
          deriv_enum = Nag_Function;
        }
      else if (deriv == 'd')
        {
          deriv_enum = Nag_Deriv;
        }
      else
        {
          Vprintf("Unrecognised character for Nag_FunType type\n");
          exit_status = -1;
          goto END;
        }
      /* nag_complex_airy_ai (s17dgc).
       * Airy functions Ai~(z) and ci~(z), complex z
       */
      nag_complex_airy_ai(deriv_enum, z, scal_enum, &ai, &nz, &fail);
      if (fail.code == NE_NOERROR)
        Vprintf("   '%c'  (%7.3f,%7.3f)  '%c'  (%7.3f,%7.3f)  %ld\n",
                deriv, z.re, z.im, scal, ai.re, ai.im, nz);
      else
        {
          Vprintf("Error from nag_complex_airy_ai (s17dgc).\n%s\n",
                  fail.message);
          exit_status = 1;
          goto END;
        }
    }
 END:
  return exit_status;
}