# include <math.h>
# include <stdio.h>
# include <stdlib.h>
# include <time.h>

# include "r8pbl.h"

int main ( );

void r8pbl_dif2_test ( );
void r8pbl_indicator_test ( );
void r8pbl_mv_test ( );
void r8pbl_print_test ( );
void r8pbl_print_some_test ( );
void r8pbl_random_test ( );
void r8pbl_to_r8ge_test ( );
void r8pbl_zeros_test ( );
void timestamp ( );

/******************************************************************************/

int main ( )

/******************************************************************************/
/*
  Purpose:

    r8pbl_test() tests r8pbl().

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    24 August 2022

  Author:

    John Burkardt
*/
{
  timestamp ( );
  printf ( "\n" );
  printf ( "r8pbl_test():\n" );
  printf ( "  C version\n" );
  printf ( "  Test r8pbl().\n" );

  r8pbl_dif2_test ( );
  r8pbl_indicator_test ( );
  r8pbl_mv_test ( );
  r8pbl_print_test ( );
  r8pbl_print_some_test ( );
  r8pbl_random_test ( );
  r8pbl_to_r8ge_test ( );
  r8pbl_zeros_test ( );
/*
  Terminate.
*/
  printf ( "\n" );
  printf ( "r8pbl_test():\n" );
  printf ( "  Normal end of execution.\n" );
  printf ( "\n" );
  timestamp ( );

  return 0;
}
/******************************************************************************/

void r8pbl_dif2_test ( )

/******************************************************************************/
/*
  Purpose:

    R8PBL_DIF2_TEST tests R8PBL_DIF2.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    21 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  int ml = 3;
  int n = 5;

  printf ( "\n" );
  printf ( "R8PBL_DIF2_TEST\n" );
  printf ( "  R8PBL_DIF2 sets up an R8PBL second difference matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Bandwidth ML = %d\n", ml );

  a = r8pbl_dif2 ( n, ml );

  r8pbl_print ( n, ml, a, "  The R8PBL second difference matrix:" );

  free ( a );

  return;
}
/******************************************************************************/

void r8pbl_indicator_test ( )

/******************************************************************************/
/*
  Purpose:

    R8PBL_INDICATOR_TEST tests R8PBL_INDICATOR.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    14 April 2013

  Author:

    John Burkardt
*/
{
  double *a;
  int ml = 3;
  int n = 9;

  printf ( "\n" );
  printf ( "R8PBL_INDICATOR_TEST\n" );
  printf ( "  R8PBL_INDICATOR sets up an R8PBL indicator matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Bandwidth ML = %d\n", ml );

  a = r8pbl_indicator ( n, ml );

  r8pbl_print ( n, ml, a, "  The R8PBL indicator matrix:" );

  free ( a );

  return;
}
/******************************************************************************/

void r8pbl_mv_test ( )

/******************************************************************************/
/*
  Purpose:
 
    R8PBL_MV_TEST tests R8PBL_MV.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    22 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  double *b;
  int ml = 2;
  int n = 5;
  int seed = 123456789;
  double *x;

  printf ( "\n" );
  printf ( "R8PBL_MV_TEST\n" );
  printf ( "  R8PBL_MV computes A*x, where A is an R8PBL matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N =     %d\n", n );
  printf ( "  Lower bandwidth ML = %d\n", ml );
/*
  Set the matrix.
*/
  a = r8pbl_random ( n, ml, &seed );

  r8pbl_print ( n, ml, a, "  Matrix A:" );
/*
  Set the desired solution.
*/
  x = r8vec_indicator1_new ( n );

  r8vec_print ( n, x, "  Vector x:" );
/*
  Compute the corresponding right hand side.
*/
  b = r8pbl_mv ( n, ml, a, x );

  r8vec_print ( n, b, "  Product b=A*x" );

  free ( a );
  free ( b );
  free ( x );

  return;
}
/******************************************************************************/

void r8pbl_print_test ( )

/******************************************************************************/
/*
  Purpose:

    R8PBL_PRINT_TEST tests R8PBL_PRINT.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    21 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  int ml = 3;
  int n = 9;

  printf ( "\n" );
  printf ( "R8PBL_PRINT_TEST\n" );
  printf ( "  R8PBL_PRINT prints an R8PBL matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Bandwidth ML = %d\n", ml );

  a = r8pbl_indicator ( n, ml );

  r8pbl_print ( n, ml, a, "  The R8PBL matrix:" );

  free ( a );

  return;
}
/******************************************************************************/

void r8pbl_print_some_test ( )

/******************************************************************************/
/*
  Purpose:

    R8PBL_PRINT_SOME_TEST tests R8PBL_PRINT_SOME.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    22 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  int ml = 4;
  int n = 9;

  printf ( "\n" );
  printf ( "R8PBL_PRINT_SOME_TEST\n" );
  printf ( "  R8PBL_PRINT_SOME prints soem of an R8PBL matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Bandwidth ML = %d\n", ml );

  a = r8pbl_indicator ( n, ml );

  r8pbl_print_some ( n, ml, a, 3, 4, 7, 8, "  Row(3:7), Col(4:8):" );

  free ( a );

  return;
}
/******************************************************************************/

void r8pbl_random_test ( )

/******************************************************************************/
/*
  Purpose:

    R8PBL_RANDOM_TEST tests R8PBL_RANDOM.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    22 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  int ml = 3;
  int n = 9;
  int seed = 123456789;

  printf ( "\n" );
  printf ( "R8PBL_RANDOM_TEST\n" );
  printf ( "  R8PBL_RANDOM randomizes an R8PBL matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Bandwidth ML = %d\n", ml );

  a = r8pbl_random ( n, ml, &seed );

  r8pbl_print ( n, ml, a, "  The R8PBL random matrix:" );

  free ( a );

  return;
}
/******************************************************************************/

void r8pbl_to_r8ge_test ( )

/******************************************************************************/
/*
  Purpose:

    R8PBL_TO_R8GE_TEST tests R8PBL_TO_R8GE.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    22 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  double *a_r8ge;
  int ml = 3;
  int n = 9;

  printf ( "\n" );
  printf ( "R8PBL_TO_R8GE_TEST\n" );
  printf ( "  R8PBL_TO_R8GE converts an R8PBL matrix to R8GE format.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Bandwidth ML = %d\n", ml );

  a = r8pbl_indicator ( n, ml );

  r8pbl_print ( n, ml, a, "  The R8PBL matrix:" );

  a_r8ge = r8pbl_to_r8ge ( n, ml, a );

  r8ge_print ( n, n, a_r8ge, "  The R8GE matrix:" );

  free ( a );
  free ( a_r8ge );

  return;
}
/******************************************************************************/

void r8pbl_zeros_test ( )

/******************************************************************************/
/*
  Purpose:

    R8PBL_ZEROS_TEST tests R8PBL_ZEROS.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    21 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  int ml = 3;
  int n = 5;

  printf ( "\n" );
  printf ( "R8PBL_ZEROS_TEST\n" );
  printf ( "  R8PBL_ZEROS zeros an R8PBL matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Bandwidth ML = %d\n", ml );

  a = r8pbl_zeros ( n, ml );

  r8pbl_print ( n, ml, a, "  The R8PBL zero matrix:" );

  free ( a );

  return;
}
/******************************************************************************/

void timestamp ( )

/******************************************************************************/
/*
  Purpose:

    TIMESTAMP prints the current YMDHMS date as a time stamp.

  Example:

    31 May 2001 09:45:54 AM

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    24 September 2003

  Author:

    John Burkardt
*/
{
# define TIME_SIZE 40

  static char time_buffer[TIME_SIZE];
  const struct tm *tm;
  time_t now;

  now = time ( NULL );
  tm = localtime ( &now );

  strftime ( time_buffer, TIME_SIZE, "%d %B %Y %I:%M:%S %p", tm );

  printf ( "%s\n", time_buffer );

  return;
# undef TIME_SIZE
}