/* nag_ztfttr (f01vhc) Example Program.
 *
 * Copyright 2014 Numerical Algorithms Group.
 *
 * Mark 25, 2014.
 */

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

int main(void)
{
  /* Scalars */
  Integer        exit_status = 0, inc1 = 1, indent = 0, ncols = 80;
  Integer        i, j, k, lar1, lar2, lenar, pda, pdar, q, mx, n, nx;
  /* Arrays */
  Complex        *a = 0, *ar = 0;
  char           nag_enum_transr[40], nag_enum_uplo[40], form[] = "%5.2f";
  /* Nag Types */
  Nag_MatrixType matrix;
  Nag_OrderType  order;
  Nag_RFP_Store  transr;
  Nag_UploType   uplo;
  NagError       fail;

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

  INIT_FAIL(fail);

  printf("nag_ztfttr (f01vhc) Example Program Results\n\n");
  /* Skip heading in data file*/
  scanf("%*[^\n] ");
  scanf("%" NAG_IFMT "%*[^\n] ", &n);
  scanf("%39s ", nag_enum_transr);
  scanf("%39s  %*[^\n] ", nag_enum_uplo);
  pda = n;
  lenar = (n * (n + 1))/2;
  if (!(a = NAG_ALLOC(pda*n, Complex)) || !(ar = NAG_ALLOC(lenar, Complex))) {
    printf("Allocation failure\n");
    exit_status = -1;
    goto END;
  }
  transr = (Nag_RFP_Store) nag_enum_name_to_value(nag_enum_transr);
  uplo = (Nag_UploType) nag_enum_name_to_value(nag_enum_uplo);
  /* Read an RFP matrix into array ar. */
  k = n/2;
  q = n - k;
  if (transr==Nag_RFP_Normal) {
    lar1 = 2*k+1;
    lar2 = q;
  } else {
    lar1 = q;
    lar2 = 2*k+1;
  }
  if (order==Nag_RowMajor) {
    pdar = lar2;
  } else {
    pdar = lar1;
  }
  for (i = 0; i < lar1; i++) {
    for (j = 0; j < lar2; j++) scanf(" ( %lf , %lf )", &AR(i,j).re,
                                     &AR(i,j).im);
  }

  /* Print the packed Rectangular Full Packed array */
  if (order==Nag_RowMajor) {
    mx = inc1;
    nx = lenar;
  } else {
    mx = lenar;
    nx = inc1;
  }

  fflush(stdout);
  nag_gen_complx_mat_print_comp(order, Nag_GeneralMatrix, Nag_NonUnitDiag, mx,
                              nx, ar, lenar, Nag_BracketForm, form,
                              "RFP Packed Array AR:", Nag_IntegerLabels, NULL,
                              Nag_NoLabels, NULL, ncols, indent, 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;
  }
  printf("\n");

  /* Convert triangular matrix from RFP (ar) to Full format (a) using
   * nag_ztfttr (f01vhc).
   */
  nag_ztfttr(order, transr, uplo, n, ar, a, pda, &fail);
  if (fail.code != NE_NOERROR) {
    printf("Error from  nag_ztfttr (f01vhc).\n%s\n", fail.message);
    exit_status = 1;
    goto END;
  }

  /* Print the unpacked array*/
  matrix = (uplo == Nag_Upper ? Nag_UpperMatrix : Nag_LowerMatrix);

  /* nag_gen_complx_mat_print_comp (x04dbc).
   * Print complex general matrix (comprehensive).
   */
  fflush(stdout);
  nag_gen_complx_mat_print_comp(order, matrix, Nag_NonUnitDiag, n, n, a, pda,
                                Nag_BracketForm, form, "Unpacked Matrix A:",
                                Nag_IntegerLabels, NULL, Nag_IntegerLabels,
                                NULL, ncols, indent, 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;
  }

 END:
  NAG_FREE(a);
  NAG_FREE(ar);
  return exit_status;
}