/*
   testmath.cpp
   CIS 150
   6/3/2008
   David Klick
   
   This program demonstrates some basic math library
   functions.
*/

#include <cmath>
#include <iostream>
#include <iomanip>
using std::cin;
using std::cout;
using std::setw;
using std::fixed;
using std::showpoint;
using std::setprecision;
using std::endl;

void cont();

int main() {
   double x=5.78;
   double y=6.45;
   double z=-3.2;
   
   // display heading
   cout << "x -->     " << fixed << showpoint << setprecision(2)
        << setw(8) << x << setw(8) << y << setw(8) << z << '\n';
        
   // display results of functions on values
   cout << "fabs(x)   " << setw(8) << fabs(x) << setw(8)
        << fabs(y) << setw(8) << fabs(z) << '\n';
   cout << "ceil(x)   " << setw(8) << ceil(x) << setw(8)
        << ceil(y) << setw(8) << ceil(z) << '\n';
   cout << "floor(x)  " << setw(8) << floor(x) << setw(8)
        << floor(y) << setw(8) << floor(z) << "\n\n\n";

   cout << "fmod(7.6, 3.7) = " << fmod(7.6, 3.7) << '\n';
   cout << "sqrt(9.0) = " << sqrt(9.0) << '\n';
   cout << "pow(4.0, 3.0) = " << pow(4.0, 3.0) << "\n\n";

   cont();
   return 0;
}      

void cont() {
   if (cin.rdbuf()->sungetc() != -1 && cin.get() != '\n') cin.ignore(80,'\n');
   cout << "Press enter to continue...";
   cin.get();
}

/*
   Sample run:
   
   x -->         5.78    6.45   -3.20
   fabs(x)       5.78    6.45    3.20
   ceil(x)       6.00    7.00   -3.00
   floor(x)      5.00    6.00   -4.00


   fmod(7.6, 3.7) = 0.20
   sqrt(9.0) = 3.00
   pow(4.0, 3.0) = 64.00

   Press enter to continue...
*/