//
// Filename:      pgm3_a.cpp
//
// Description:   Demonstration of Math Library functions #1
//
// ENSC 104:      Digital Computer Programming
//
// Instructor:    Dr. Walsh
//
// Section:       2
//
// Date Created:  02/23/98
// Last Modified: 02/23/98
//
// Name:          N/A
//

#include <iostream.h>
#include <math.h>

const float PI = 3.1415926;
const float PI_OVER_TWO = PI/2.0;
const float PI_OVER_FOUR = PI/4.0;

main()
   {
   float x;
   float y;
   float z;

   x = 9.0;
   y = sqrt( x );
   cout << "sqrt(" << x << ") = " << y << endl << endl;

   x = 1.0;
   y = exp( x );
   cout << "exp(" << x << ") = "  << y << endl << endl;

   x = 2.9;
   y = log( x );
   cout << "log(" << x << ") = " << y << endl << endl;

   x = 10000.0;
   y = log10( x );
   cout << "log10(" << x << ") = " << y << endl << endl;

   x = -1.23;
   y = fabs( x );
   cout << "fabs(" << x << ") = " << y << endl << endl;

   x = 1.23;
   y = ceil( x );
   cout << "ceil(" << x << ") = " << y << endl << endl;

   x = 1.23;
   y = floor( x );
   cout << "floor(" << x << ") = " << y << endl << endl;

   x = 2.1;
   y = 3.2;
   z = pow( x, y );
   cout << "pow(" << x << ", " << y << ") = " << z << endl << endl;

   x = 26.34;
   y = 20.0;
   z = fmod( x, y );
   cout << "fmod(" << x << ", " << y << ") = " << z << endl << endl;

   x = PI_OVER_FOUR;
   y = sin( x );
   cout << "sin(" << x << ") = " << y << endl << endl;

   x = PI_OVER_FOUR;
   y = cos( x );
   cout << "cos(" << x << ") = " << y << endl << endl;

   x = PI_OVER_FOUR;
   y = tan( x );
   cout << "tan(" << x << ") = " << y << endl << endl;

   return 0;
   }