# include <cmath>
# include <cstdlib>
# include <ctime>
# include <iostream>
# include <iomanip>

using namespace std;

# include "machar.hpp"

int main ( );
void r4_machar_test ( );
void r8_machar_test ( );
void timestamp ( );

//****************************************************************************80

int main ( )

//****************************************************************************80
//
//  Purpose:
//
//    machar_test() tests machar().
//
//  Licensing:
//
//    This code is distributed under the MIT license. 
//
//  Modified:
//
//    11 November 2006
//
//  Author:
//
//    John Burkardt
//
{
  timestamp ( );
  cout << "\n";
  cout << "MACHAR_TEST():\n";
  cout << "  C++ version\n";
  cout << "  Test MACHAR().\n";

  r4_machar_test ( );
  r8_machar_test ( );
//
//  Terminate.
//
  cout << "\n";
  cout << "MACHAR_TEST():\n";
  cout << "  Normal end of execution.\n";
  cout << "\n";
  timestamp ( );

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

void r4_machar_test ( )

//****************************************************************************80
//
//  Purpose:
//
//    R4_MACHAR_TEST tests R4_MACHAR.
//
//  Licensing:
//
//    This code is distributed under the MIT license. 
//
//  Modified:
//
//    24 April 2007
//
//  Author:
//
//    John Burkardt
//
{
  float eps;
  float epsneg;
  long int ibeta;
  long int iexp;
  long int irnd;
  long int it;
  long int machep;
  long int maxexp;
  long int minexp;
  long int negep;
  long int ngrd;
  float xmax;
  float xmin;

  cout << "\n";
  cout << "R4_MACHAR_TEST\n";
  cout << "  R4_MACHAR computes single\n";
  cout << "  precision machine constants.\n";

  r4_machar ( &ibeta, &it, &irnd, &ngrd, &machep, &negep, &iexp,
    &minexp, &maxexp, &eps, &epsneg, &xmin, &xmax );

  cout << "\n";
  cout << "  IBETA =  " << ibeta << "\n";
  cout << "  IT =     " << it << "\n";
  cout << "  IRND =   " << irnd << "\n";
  cout << "  NGRD =   " << ngrd << "\n";
  cout << "  MACHEP = " << machep << "\n";
  cout << "  NEGEP =  " << negep << "\n";
  cout << "  IEXP =   " << iexp << "\n";
  cout << "  MINEXP = " << minexp << "\n";
  cout << "  MAXEXP = " << maxexp << "\n";
  cout << setw(26) << setprecision(16) << "  EPS =    " << eps << "\n";
  cout << setw(26) << setprecision(16) << "  EPSNEG = " << epsneg << "\n";
  cout << setw(26) << setprecision(16) << "  XMIN =   " << xmin << "\n";
  cout << setw(26) << setprecision(16) << "  XMAX =   " << xmax << "\n";

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

void r8_machar_test ( )

//****************************************************************************80
//
//  Purpose:
//
//    R8_MACHAR_TEST tests R8_MACHAR.
//
//  Licensing:
//
//    This code is distributed under the MIT license. 
//
//  Modified:
//
//    24 April 2007
//
//  Author:
//
//    John Burkardt
//
{
  double eps;
  double epsneg;
  long int ibeta;
  long int iexp;
  long int irnd;
  long int it;
  long int machep;
  long int maxexp;
  long int minexp;
  long int negep;
  long int ngrd;
  double xmax;
  double xmin;

  cout << "\n";
  cout << "R8_MACHAR_TEST\n";
  cout << "  R8_MACHAR computes double\n";
  cout << "  precision machine constants.\n";

  r8_machar ( &ibeta, &it, &irnd, &ngrd, &machep, &negep, &iexp,
    &minexp, &maxexp, &eps, &epsneg, &xmin, &xmax );

  cout << "\n";
  cout << "  IBETA =  " << ibeta << "\n";
  cout << "  IT =     " << it << "\n";
  cout << "  IRND =   " << irnd << "\n";
  cout << "  NGRD =   " << ngrd << "\n";
  cout << "  MACHEP = " << machep << "\n";
  cout << "  NEGEP =  " << negep << "\n";
  cout << "  IEXP =   " << iexp << "\n";
  cout << "  MINEXP = " << minexp << "\n";
  cout << "  MAXEXP = " << maxexp << "\n";
  cout << setw(26) << setprecision(16) << "  EPS =    " << eps << "\n";
  cout << setw(26) << setprecision(16) << "  EPSNEG = " << epsneg << "\n";
  cout << setw(26) << setprecision(16) << "  XMIN =   " << xmin << "\n";
  cout << setw(26) << setprecision(16) << "  XMAX =   " << xmax << "\n";

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

void timestamp ( )

//****************************************************************************80
//
//  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:
//
//    19 March 2018
//
//  Author:
//
//    John Burkardt
//
{
# define TIME_SIZE 40

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

  now = std::time ( NULL );
  tm_ptr = std::localtime ( &now );

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

  std::cout << time_buffer << "\n";

  return;
# undef TIME_SIZE
}