/* nag_matop_complex_gen_matrix_exp (f01fcc) Example Program.
 *
 * Copyright 2011, Numerical Algorithms Group.
 *
 * Mark 23, 2011.
 */

#include <nag.h>
#include <nag_stdlib.h>
#include <naga02.h>
#include <nagf01.h>
#include <nagx04.h>

int main(void)
{
  /* Scalars */
  Integer       exit_status = 0;
  Integer       pda;
  Integer       i, j, n;

  /* Arrays */
  Complex       *a = 0;

  /* NAG types */
  Nag_OrderType order;
  NagError      fail;

  INIT_FAIL(fail);

  printf("nag_matop_complex_gen_matrix_exp (f01fcc) Example Program Results");
  printf("\n\n");

  /* Read matrix dimension from data file. */
  scanf("%*[^\n]%ld%*[^\n]", &n);

  pda = n;
  if (!(a = NAG_ALLOC((pda)*(n), Complex)))
    {
      printf("Allocation failure\n");
      exit_status = -1;
      goto END;
    }

#ifdef NAG_COLUMN_MAJOR
#define A(I, J) a[(J-1)*pda + I-1]
  order = Nag_ColMajor;
#else
#define A(I, J) a[(I-1)*pda + J-1]
  order = Nag_RowMajor;
#endif

  /* Read A from data file. */
  for (i = 1; i <= n; i++)
    for (j = 1; j <= n; j++)
      scanf(" ( %lf , %lf ) ", &A(i, j).re, &A(i, j).im);
  scanf("%*[^\n]");

  /* nag_matop_complex_gen_matrix_exp (f01fcc) - Complex matrix exponential */
  nag_matop_complex_gen_matrix_exp(order, n, a, pda, &fail);
  if (fail.code != NE_NOERROR)
    {
      printf("%s\n", fail.message);
      exit_status = 1;
      goto END;
    }

  /* nag_gen_complx_mat_print(x04dac) - Print complex general matrix */
  nag_gen_complx_mat_print(order, Nag_GeneralMatrix, Nag_NonUnitDiag,
                           n, n, a, n, "Exp(A)", NULL, &fail);
  if (fail.code != NE_NOERROR)
    {
      printf("%s\n", fail.message);
      exit_status = 2;
      goto END;
    }

 END:

  if (a) NAG_FREE(a);

  return exit_status;
}