/* nag_blast_ztr_load (f16tgc) Example Program.
 *
 * Copyright 2024 Numerical Algorithms Group.
 *
 * Mark 30.2, 2024.
 */

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

int main(void) {

  /* Scalars */
  Complex alpha, diag;
  Integer exit_status, n, pda;

  /* Arrays */
  Complex *a = 0;
  char nag_enum_arg[40];

  /* Nag Types */
  NagError fail;
  Nag_OrderType order;
  Nag_UploType uplo;
  Nag_MatrixType matrix;

#ifdef NAG_COLUMN_MAJOR
  order = Nag_ColMajor;
#else
  order = Nag_RowMajor;
#endif

  exit_status = 0;
  INIT_FAIL(fail);

  printf("nag_blast_ztr_load (f16tgc) Example Program Results\n\n");

  /* Skip heading in data file */
  scanf("%*[^\n] ");

  /* Read the problem dimension */
  scanf("%" NAG_IFMT "%*[^\n] ", &n);

  /* Read the uplo parameter */
  scanf("%39s%*[^\n] ", nag_enum_arg);
  /* nag_enum_name_to_value (x04nac).
   * Converts NAG enum member name to value
   */
  uplo = (Nag_UploType)nag_enum_name_to_value(nag_enum_arg);

  /* Read scalar parameters */
  scanf(" ( %lf , %lf ) ( %lf , %lf )%*[^\n] ", &alpha.re, &alpha.im, &diag.re,
        &diag.im);

  pda = n;

  if (n > 0) {
    /* Allocate memory */
    if (!(a = NAG_ALLOC(n * n, Complex))) {
      printf("Allocation failure\n");
      exit_status = -1;
      goto END;
    }
  } else {
    printf("Invalid n\n");
    exit_status = 1;
    return exit_status;
  }

  /* nag_blast_ztr_load (f16tgc).
   * Initialize complex triangular matrix.
   *
   */
  nag_blast_ztr_load(order, uplo, n, alpha, diag, a, pda, &fail);
  if (fail.code != NE_NOERROR) {
    printf("Error from nag_blast_ztr_load.\n%s\n", fail.message);
    exit_status = 1;
    goto END;
  }

  if (uplo == Nag_Upper) {
    matrix = Nag_UpperMatrix;
  } else {
    matrix = Nag_LowerMatrix;
  }
  /* Print generated matrix A */
  /* nag_file_print_matrix_complex_gen_comp (x04dbc).
   * Print complex general matrix (comprehensive)
   */
  fflush(stdout);
  nag_file_print_matrix_complex_gen_comp(
      order, matrix, Nag_NonUnitDiag, n, n, a, pda, Nag_BracketForm, "%5.2f",
      "Generated Matrix A", Nag_IntegerLabels, 0, Nag_IntegerLabels, 0, 80, 0,
      0, &fail);
  if (fail.code != NE_NOERROR) {
    printf("Error from nag_file_print_matrix_complex_gen_comp (x04dbc).\n%s"
           "\n",
           fail.message);
    exit_status = 1;
    goto END;
  }

END:
  NAG_FREE(a);

  return exit_status;
}