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

# include "test_interp_1d.h"
# include "r8lib.h"

int main ( );
void test01 ( );
void test02 ( int nd );
void timestamp ( );

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

int main ( )

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

    test_interp_1d_test() tests test_interp_1d().

  Licensing:

    This code is distributed under the MIT license.

  Modified:

    28 August 2012

  Author:

    John Burkardt
*/
{
  int nd;

  timestamp ( );

  printf ( "\n" );
  printf ( "test_interp_1d_test():\n" );
  printf ( "  C version\n" );
  printf ( "  Test TEST_INTERP_1D().\n" );
  printf ( "  The R8LIB library is needed.\n" );

  test01 ( );

  nd = 11;
  test02 ( nd );
/*
  Terminate.
*/
  printf ( "\n" );
  printf ( "TEST_INTERP_1D_TEST\n" );
  printf ( "  Normal end of execution.\n" );
  printf ( "\n" );
  timestamp ( );

  return 0;
}
//****************************************************************************80

void test01 ( )

//****************************************************************************80
//
//  Purpose:
//
//    TEST01 simply prints the title of each function.
//
//  Licensing:
//
//    This code is distributed under the MIT license.
//
//  Modified:
//
//    28 August 2012
//
//  Author:
//
//    John Burkardt
//
{
  int prob;
  int prob_num;
  char *title;

  printf ( "\n" );
  printf ( "TEST01\n" );
  printf ( "  Print the title of each function.\n" );

  prob_num = p00_prob_num ( );
  
  printf ( "\n" );
  printf ( "  There are %d functions available:\n", prob_num );
  printf ( "  Index  Title\n" );
  printf ( "\n" );

  for ( prob = 1; prob <= prob_num; prob++ )
  {
    title = p00_title ( prob );
    printf ( "  %2d  %s\n", prob, title );
    free ( title );
  }
  return;
}
//****************************************************************************80

void test02 ( int nd )

//****************************************************************************80
//
//  Purpose:
//
//    TEST_INTERP_1D_TEST02 evaluates each test function at ND sample points.
//
//  Licensing:
//
//    This code is distributed under the MIT license.
//
//  Modified:
//
//    28 August 2012
//
//  Author:
//
//    John Burkardt
//
//  Parameters:
//
//    Input, int ND, the number of sample points.
//
{
  double a;
  double b;
  double *f;
  int j;
  int prob;
  int prob_num;
  double *x;

  printf ( "\n" );
  printf ( "TEST_INTERP_1D_TEST02\n" );
  printf ( "  Use P00_F to sample each function.\n" );

  prob_num = p00_prob_num ( );

  a = 0.0;
  b = 1.0;
  x = r8vec_linspace_new ( nd, a, b );

  printf ( "\n" );

  for ( prob = 1; prob <= prob_num; prob++ )
  {
    f = p00_f ( prob, nd, x );
    printf ( "\n" );
    printf ( "  X, F(X) for problem %d\n", prob );
    printf ( "\n" );
    for ( j = 0; j < nd; j++ )
    {
      printf ( "  %2d  %10f  %10g\n", j, x[j], f[j] );
    }
    free ( f );
  }

  free ( x );

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

void timestamp ( )

/******************************************************************************/
/*
  Purpose:
 
    timestamp() prints the current YMDHMS date as a time stamp.

  Example:

    17 June 2014 09:45:54 AM

  Licensing:

    This code is distributed under the MIT license. 

  Modified:

    01 May 2021

  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
}