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

# include "r8ri.h"

int main ( );
void r8ri_dif2_test ( );
void r8ri_indicator_test ( );
void r8ri_mtv_test ( );
void r8ri_mv_test ( );
void r8ri_print_test ( );
void r8ri_print_some_test ( );
void r8ri_random_test ( );
void r8ri_to_r8ge_test ( );
void r8ri_zeros_test ( );
void timestamp ( );

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

int main ( )

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

    r8ri_test() tests r8ri().

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    26 August 2022

  Author:

    John Burkardt
*/
{
  timestamp ( );
  printf ( "\n" );
  printf ( "r8ri_test()\n" );
  printf ( "  C version\n" );
  printf ( "  Test r8ri().\n" );

  r8ri_dif2_test ( );
  r8ri_indicator_test ( );
  r8ri_mtv_test ( );
  r8ri_mv_test ( );
  r8ri_print_test ( );
  r8ri_print_some_test ( );
  r8ri_random_test ( );
  r8ri_to_r8ge_test ( );
  r8ri_zeros_test ( );
/*
  Terminate.
*/
  printf ( "\n" );
  printf ( "r8ri_test():\n" );
  printf ( "  Normal end of execution.\n" );
  printf ( "\n" );
  timestamp ( );

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

void r8ri_dif2_test ( )

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

    R8RI_DIF2_TEST tests R8RI_DIF2.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    10 July 2016

  Author:

    John Burkardt
*/
{
  double a[14];
  int ija[14];
  int n = 5;
  int nz = 14;

  printf ( "\n" );
  printf ( "R8RI_DIF2_TEST\n" );
  printf ( "  R8RI_DIF2 sets up an R8RI indicator matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Storage NZ =     %d\n", nz );

  r8ri_dif2 ( n, nz, ija, a );

  r8ri_print ( n, nz, ija, a, "  The R8RI second difference matrix:" );

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

void r8ri_indicator_test ( )

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

    R8RI_INDICATOR_TEST tests R8RI_INDICATOR.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    10 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  int ija[11] = {
     6,  7,  7,  9, 10, 
    11,  2,  1,  3,  4, 
     3 };
  int n = 5;
  int nz = 11;

  printf ( "\n" );
  printf ( "R8RI_INDICATOR_TEST\n" );
  printf ( "  R8RI_INDICATOR returns an R8RI indicator matrix\n" );
  printf ( "  for a given sparsity pattern.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Storage NZ =     %d\n", nz );

  a = r8ri_indicator ( n, nz, ija );

  r8ri_print ( n, nz, ija, a, "  The R8RI matrix:" );

  free ( a );

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

void r8ri_mtv_test ( )

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

    R8RI_MTV_TEST tests R8RI_MTV.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    11 July 2016

  Author:

    John Burkardt
*/
{
  double a[11] = {
    3.0, 4.0, 5.0, 0.0, 8.0, 
    0.0, 1.0, 7.0, 9.0, 2.0, 
    6.0  };
  double *b;
  int ija[11] = {
     6,  7,  7,  9, 10, 
    11,  2,  1,  3,  4, 
     3 };
  int n = 5;
  int nz = 11;
  double *x;

  printf ( "\n" );
  printf ( "R8RI_MTV_TEST\n" );
  printf ( "  R8RI_MTV computes b=A'*x, where A is an R8RI matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Storage NZ =     %d\n", nz );

  r8ri_print ( n, nz, ija, a, "  The R8RI matrix:" );

  x = r8vec_indicator1_new ( n );

  r8vec_print ( n, x, "  The vector x:" );

  b = r8ri_mtv ( n, nz, ija, a, x );

  r8vec_print ( n, b, "  The product b=A'*x:" );

  free ( b );
  free ( x );

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

void r8ri_mv_test ( )

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

    R8RI_MV_TEST tests R8RI_MV.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    11 July 2016

  Author:

    John Burkardt
*/
{
  double a[11] = {
    3.0, 4.0, 5.0, 0.0, 8.0, 
    0.0, 1.0, 7.0, 9.0, 2.0, 
    6.0  };
  double *b;
  int ija[11] = {
     6,  7,  7,  9, 10, 
    11,  2,  1,  3,  4, 
     3 };
  int n = 5;
  int nz = 11;
  double *x;

  printf ( "\n" );
  printf ( "R8RI_MV_TEST\n" );
  printf ( "  R8RI_MV computes b=A*x, where A is an R8RI matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Storage NZ =     %d\n", nz );

  r8ri_print ( n, nz, ija, a, "  The R8RI matrix:" );

  x = r8vec_indicator1_new ( n );

  r8vec_print ( n, x, "  The vector x:" );

  b = r8ri_mv ( n, nz, ija, a, x );

  r8vec_print ( n, b, "  The product b=A*x:" );

  free ( b );
  free ( x );

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

void r8ri_print_test ( )

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

    R8RI_PRINT_TEST tests R8RI_PRINT.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    11 July 2016

  Author:

    John Burkardt
*/
{
  double a[11] = {
    3.0, 4.0, 5.0, 0.0, 8.0, 
    0.0, 1.0, 7.0, 9.0, 2.0, 
    6.0  };
  int ija[11] = {
     6,  7,  7,  9, 10, 
    11,  2,  1,  3,  4, 
     3 };
  int n = 5;
  int nz = 11;

  printf ( "\n" );
  printf ( "R8RI_PRINT_TEST\n" );
  printf ( "  R8RI_PRINT prints an R8RI matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Storage NZ =     %d\n", nz );

  r8ri_print ( n, nz, ija, a, "  The R8RI matrix:" );

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

void r8ri_print_some_test ( )

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

    R8RI_PRINT_SOME_TEST tests R8RI_PRINT_SOME.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    11 July 2016

  Author:

    John Burkardt
*/
{
  double a[34] = {
    4.0,  4.0,  4.0,  4.0,  4.0, 
    4.0,  4.0,  4.0,  4.0,  0.0, 
   -1.0, -1.0, -1.0, -1.0, -1.0, 
   -1.0, -1.0, -1.0, -1.0, -1.0, 
   -1.0, -1.0, -1.0, -1.0, -1.0, 
   -1.0, -1.0, -1.0, -1.0, -1.0, 
   -1.0, -1.0, -1.0, -1.0  };
  int ija[34] = {
     10, 12, 15, 17, 20, 
     24, 27, 29, 32, 34, 
      1,  3,  0,  2,  4, 
      1,  5,  0,  4,  6, 
      1,  3,  5,  7,  2, 
      4,  8,  3,  7,  4, 
      6,  8,  5,  7 };
  int n = 9;
  int nz = 34;

  printf ( "\n" );
  printf ( "R8RI_PRINT_SOME_TEST\n" );
  printf ( "  R8RI_PRINT_SOME prints some of an R8RI matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Storage NZ =     %d\n", nz );

  r8ri_print_some ( n, nz, ija, a, 0, 3, 8, 5, "  Rows(0-8), Cols(3-5):" );

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

void r8ri_random_test ( )

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

    R8RI_RANDOM_TEST tests R8RI_RANDOM.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    11 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  int ija[11] = {
     6,  7,  7,  9, 10, 
    11,  2,  1,  3,  4, 
     3 };
  int n = 5;
  int nz = 11;
  int seed;

  printf ( "\n" );
  printf ( "R8RI_RANDOM_TEST\n" );
  printf ( "  R8RI_RANDOM randomizes an R8RI matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Storage NZ =     %d\n", nz );

  seed = 123456789;
  a = r8ri_random ( n, nz, ija, &seed );

  r8ri_print ( n, nz, ija, a, "  The R8RI matrix:" );

  free ( a );

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

void r8ri_to_r8ge_test ( )

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

    R8RI_TO_R8GE_TEST tests R8RI_TO_R8GE.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    11 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  double *a_r8ge;
  int ija[11] = {
     6,  7,  7,  9, 10, 
    11,  2,  1,  3,  4, 
     3 };
  int n = 5;
  int nz = 11;

  printf ( "\n" );
  printf ( "R8RI_TO_R8GE_TEST\n" );
  printf ( "  R8RI_TO_R8GE converts an R8RI matrix to R8GE format.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Storage NZ =     %d\n", nz );

  a = r8ri_indicator ( n, nz, ija );

  r8ri_print ( n, nz, ija, a, "  The R8RI matrix:" );

  a_r8ge = r8ri_to_r8ge ( n, nz, ija, a );

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

  free ( a );
  free ( a_r8ge );

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

void r8ri_zeros_test ( )

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

    R8RI_ZEROS_TEST tests R8RI_ZEROS.

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    11 July 2016

  Author:

    John Burkardt
*/
{
  double *a;
  int ija[11] = {
     6,  7,  7,  9, 10, 
    11,  2,  1,  3,  4, 
     3 };
  int n = 5;
  int nz = 11;

  printf ( "\n" );
  printf ( "R8RI_ZEROS_TEST\n" );
  printf ( "  R8RI_ZEROS zeros an R8RI matrix.\n" );
  printf ( "\n" );
  printf ( "  Matrix order N = %d\n", n );
  printf ( "  Storage NZ =     %d\n", nz );

  a = r8ri_zeros ( n, nz, ija );

  r8ri_print ( n, nz, ija, a, "  The R8RI 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
}