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

using namespace std;

# include "ellipsoid.h"

int main ( );
void ellipsoid_area_test ( );
void ellipsoid_volume_test ( );
void timestamp ( );

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

int main ( )

//****************************************************************************80
//
//  Purpose:
//
//    ellipsoid_test() tests ellipsoid().
//
//  Licensing:
//
//    This code is distributed under the MIT license. 
//
//  Modified:
//
//    05 January 2022
//
//  Author:
//
//    John Burkardt
//
{
  timestamp ( );
  cout << "\n";
  cout << "ellipsoid_test():\n";
  cout << "  C++ version\n";
  cout << "  Test ellipsoid().\n";

  ellipsoid_area_test ( );
  ellipsoid_volume_test ( );
//
//  Terminate.
//
  cout << "\n";
  cout << "ellipsoid_test():\n";
  cout << "  Normal end of execution.\n";
  cout << "\n";
  timestamp ( );

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

void ellipsoid_area_test ( )

//****************************************************************************80
//
//  Purpose:
//
//    ellipsoid_area_test() tests ellipsoid_area().
//
//  Licensing:
//
//    This code is distributed under the MIT license.
//
//  Modified:
//
//    06 January 2022
//
//  Author:
//
//    John Burkardt
//
{
  double a;
  double b;
  double c;
  double area;

  cout << "\n";
  cout << "ellipsoid_area_test():\n";
  cout << "  ellipsoid_area() computes the surface area of an ellipsoid\n";
  cout << "  satisfying the equation:\n";
  cout << "    (x/a)^2+(y/b)^2+(z/c)^2=1\n";

  cout << "\n";
  cout << "           A           B           C        Area\n";
  cout << "\n";

  a = 1.0;
  b = 0.8;
  c = 0.625;
  area = ellipsoid_area ( a, b, c );
  cout << "  " << setw(10) << a
       << "  " << setw(10) << b
       << "  " << setw(10) << c
       << "  " << setw(10) << area << "\n";

  a = 1.0;
  b = 1.0;
  c = 0.5;
  area = ellipsoid_area ( a, b, c );
  cout << "  " << setw(10) << a
       << "  " << setw(10) << b
       << "  " << setw(10) << c
       << "  " << setw(10) << area << "\n";

  a = 1.0;
  b = 1.0;
  c = 1.0;
  area = ellipsoid_area ( a, b, c );
  cout << "  " << setw(10) << a
       << "  " << setw(10) << b
       << "  " << setw(10) << c
       << "  " << setw(10) << area << "\n";

  a = 2.0;
  b = 1.0;
  c = 0.25;
  area = ellipsoid_area ( a, b, c );
  cout << "  " << setw(10) << a
       << "  " << setw(10) << b
       << "  " << setw(10) << c
       << "  " << setw(10) << area << "\n";

  a = 2.0;
  b = 3.0;
  c = 4.0;
  area = ellipsoid_area ( a, b, c );
  cout << "  " << setw(10) << a
       << "  " << setw(10) << b
       << "  " << setw(10) << c
       << "  " << setw(10) << area << "\n";

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

void ellipsoid_volume_test ( )

//****************************************************************************80
//
//  Purpose:
//
//    ellipsoid_volume_test() tests ellipsoid_volume().
//
//  Licensing:
//
//    This code is distributed under the MIT license.
//
//  Modified:
//
//    06 January 2022
//
//  Author:
//
//    John Burkardt
//
{
  double a;
  double b;
  double c;
  double volume;

  cout << "\n";
  cout << "ellipsoid_volume_test():\n";
  cout << "  ellipsoid_volume() computes the volume of an ellipsoid\n";
  cout << "  satisfying the equation:\n";
  cout << "    (x/a)^2+(y/b)^2+(z/c)^2=1\n";

  cout << "\n";
  cout << "           A           B           C        Volume\n";
  cout << "\n";

  a = 1.0;
  b = 0.8;
  c = 0.625;
  volume = ellipsoid_volume ( a, b, c );
  cout << "  " << setw(10) << a
       << "  " << setw(10) << b
       << "  " << setw(10) << c
       << "  " << setw(10) << volume << "\n";

  a = 1.0;
  b = 1.0;
  c = 0.5;
  volume = ellipsoid_volume ( a, b, c );
  cout << "  " << setw(10) << a
       << "  " << setw(10) << b
       << "  " << setw(10) << c
       << "  " << setw(10) << volume << "\n";

  a = 1.0;
  b = 1.0;
  c = 1.0;
  volume = ellipsoid_volume ( a, b, c );
  cout << "  " << setw(10) << a
       << "  " << setw(10) << b
       << "  " << setw(10) << c
       << "  " << setw(10) << volume << "\n";

  a = 2.0;
  b = 1.0;
  c = 0.25;
  volume = ellipsoid_volume ( a, b, c );
  cout << "  " << setw(10) << a
       << "  " << setw(10) << b
       << "  " << setw(10) << c
       << "  " << setw(10) << volume << "\n";

  a = 2.0;
  b = 3.0;
  c = 4.0;
  volume = ellipsoid_volume ( a, b, c );
  cout << "  " << setw(10) << a
       << "  " << setw(10) << b
       << "  " << setw(10) << c
       << "  " << setw(10) << volume << "\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
}