/* nag_sum_fft_complex_1d_multi (c06psc) Example Program.
 *
 * Copyright 2017 Numerical Algorithms Group.
 *
 * Mark 26.1, 2017.
 */

#include <nag.h>
#include <stdio.h>
#include <nag_stdlib.h>
#include <nagc06.h>

int main(void)
{
  /* Scalars */
  Integer exit_status = 0, i, m, n;
  /* Arrays */
  Complex *x = 0;
  char title[60];
  /* Nag Types */
  NagError fail;

  INIT_FAIL(fail);

  printf("nag_sum_fft_complex_1d_multi (c06psc) Example Program Results\n\n");
  fflush(stdout);

  /* Read dimensions of array and array values from data file. */
  scanf("%*[^\n] %" NAG_IFMT "%" NAG_IFMT "%*[^\n]", &m, &n);
  if (!(x = NAG_ALLOC((m * n), Complex)))
  {
    printf("Allocation failure\n");
    exit_status = -1;
    goto END;
  }
  for (i = 0; i < m * n; i++)
    scanf(" ( %lf , %lf ) ", &x[i].re, &x[i].im);

  /* nag_gen_complx_mat_print_comp (x04dbc).
   * Print complex general matrix (comprehensive).
   */
  sprintf(title, "Original data values\n");
  nag_gen_complx_mat_print_comp(Nag_RowMajor, Nag_GeneralMatrix,
                                Nag_NonUnitDiag, m, n, x, n, Nag_AboveForm,
                                "%7.4f", title, Nag_NoLabels, 0, Nag_NoLabels,
                                0, 80, 0, NULL, &fail);
  if (fail.code != NE_NOERROR) {
    printf("Error from nag_gen_complx_mat_print_comp (x04dbc).\n%s\n",
           fail.message);
    exit_status = 1;
    goto END;
  }

  /* nag_sum_fft_complex_1d_multi (c06psc).
   * Multiple one-dimensional complex discrete Fourier transform (Forward).
   */
  nag_sum_fft_complex_1d_multi(Nag_ForwardTransform, n, m, x, &fail);
  if (fail.code != NE_NOERROR) {
    printf("Error from nag_sum_fft_complex_1d_multi (c06psc).\n%s\n",
           fail.message);
    exit_status = 2;
    goto END;
  }
  sprintf(title, "Components of discrete Fourier transform\n");
  nag_gen_complx_mat_print_comp(Nag_RowMajor, Nag_GeneralMatrix,
                                Nag_NonUnitDiag, m, n, x, n, Nag_AboveForm,
                                "%7.4f", title, Nag_NoLabels, 0, Nag_NoLabels,
                                0, 80, 0, NULL, &fail);
  if (fail.code != NE_NOERROR) {
    printf("Error from nag_gen_complx_mat_print_comp (x04dbc).\n%s\n",
           fail.message);
    exit_status = 3;
    goto END;
  }

  /* nag_sum_fft_complex_1d_multi (c06psc).
   * Multiple one-dimensional complex discrete Fourier transform (Backward).
   */
  nag_sum_fft_complex_1d_multi(Nag_BackwardTransform, n, m, x, &fail);
  if (fail.code != NE_NOERROR) {
    printf("Error from nag_sum_fft_complex_1d_multi (c06psc).\n%s\n",
           fail.message);
    exit_status = 4;
    goto END;
  }
  sprintf(title, "Original sequence as restored by inverse transform\n");
  nag_gen_complx_mat_print_comp(Nag_RowMajor, Nag_GeneralMatrix,
                                Nag_NonUnitDiag, m, n, x, n, Nag_AboveForm,
                                "%7.4f", title, Nag_NoLabels, 0, Nag_NoLabels,
                                0, 80, 0, NULL, &fail);
  if (fail.code != NE_NOERROR) {
    printf("Error from nag_gen_complx_mat_print_comp (x04dbc).\n%s\n",
           fail.message);
    exit_status = 5;
  }

END:
  NAG_FREE(x);
  return exit_status;
}