// File:  proj3tester.C
//
// Test main for Project 3, Fixed Point Arithmetic
//
// NOTE TO GRADERS:  Because of the use of floating point numbers,
// some students may have answers that are approximations.  For example,
// the answer may be 12.3400, but the student's answer is 12.3399
// This is fine.
//
// Also, grade each test based on the STUDENT'S input to the test.  That
// is, if his/her input to the cast test (i.e., float(value)) is supposed to
// be 3.5, but his/her input is (incorrectly) 81.34, grade him/her for the
// cast test based on the answer to float(81.34).

#include <iostream.h>
#include "Fixed.H"

void main()
{
      // Testing constructor

      cout << "*** Testing constructor ***\n\n";
      Fixed a, b(12.3456), c(12.3456, -2), d(12.3456, 0);
      Fixed e(12.3456, 1), f(12.3456, 7), g(-12.3456, 5);

      cout << "[Fixed a -> 0.0]" << endl;
      cout << "a = " << a << endl;
      cout << "[Fixed b(12.3456) -> 12.34]" << endl;
      cout << "b = " << b << endl;
      cout << "[Fixed c(12.3456, -2) -> 12.34]" << endl;
      cout << "c = " << c << endl;
      cout << "[Fixed d(12.3456, 0) -> 12.0]" << endl;
      cout << "d = " << d << endl;
      cout << "[Fixed e(12.3456, 1)] -> 12.3" << endl;
      cout << "e = " << e << endl;
      cout << "[Fixed f(12.3456, 7) -> 12.3456000 or 12.3456]" << endl;
      cout << "f = " << f << endl;
      cout << "[Fixed g(-12.3456, 5) -> -12.34560 or -12.3456]" << endl;
      cout << "g = " << g << endl;

#if 1
      // Testing constructor overflow

      cout << "\n*** Testing constructor overflow ***\n\n";

      cout << "[Fixed h(12.34, 9) -> 'precision reduced' msg & h = 12.34000000 or 12.34]" << endl;
      Fixed h(12.34, 9);
      cout << "h = " << h << endl;
#endif

#if 1
      // Testing setPrecision

      cout << "\n*** Testing setPrecision ***\n\n";

      cout << "[b = 12.34]" << endl;
      cout << "b = " << b << endl;
      cout << "[b.setPrecision(5) -> 12.34000 or 12.34]\n";
      b.setPrecision(5);
      cout << "b = " << b << endl;

      cout << "\n[f = 12.3456000 or 12.3456]" << endl;
      cout << "f = " << f << endl;
      cout << "[f.setPrecision(-4) -> error msg & f = 12.3456000 or 12.3456]\n";
      f.setPrecision(-4);
      cout << "f = " << f << endl;

       
      cout << "\n[f.setPrecision(1) -> 12.3]\n";
      f.setPrecision(1);
      cout << "f = " << f << endl;     
#endif      

#if 1
      // Testing overflow in setPrecision

      cout << "\n*** Testing overflow in setPrecision ***\n\n";

      Fixed i(12.3456, 4);

      cout << "[i = 12.3456]" << endl;
      cout << "i = " << i << endl;

      cout << "\n[i.setPrecision(10) -> 'precision reduced' msg & i= 12.34560000 or 12.3456]" << endl;
      i.setPrecision(10);
      cout << "i = " << i << endl;
#endif

#if 1
     // Testing arithmetic operations

      cout << "\n*** Testing arithmetic operations ***\n\n";

      Fixed a1(4321.56, 2), a2(65.4321, 4);
      Fixed a3(3.12, 2), a4(2.0, 0), answer;

      cout << "[a1 = 4321.56]" << endl;
      cout << "a1 = " << a1 << endl;
      cout << "[a2 = 65.4321]" << endl;
      cout << "a2 = " << a2 << endl;
      cout << "[a3 = 3.12]" << endl;
      cout << "a3 = " << a3 << endl;
      cout << "[a4 = 2.0]" << endl;
      cout << "a4 = " << a4 << endl;

      answer = a1 + a2;
      cout << "\n[a1 + a2 -> 4386.9921]" << endl;
      cout << "a1 + a2 = " << answer << endl;

      answer = a1 - a2;
      cout << "\n[a1 - a2 -> 4256.1279]" << endl;
      cout << "a1 - a2 = " << answer << endl;

      answer = a2 - a1;
      cout << "\n[a2 - a1 -> -4256.1279]" << endl;
      cout << "a2 - a1 = " << answer << endl;

      answer = a2 * a3;
      cout << "\n[a2 * a3 -> 204.1481" << endl;
      cout << "a2 * a3 = " << answer << endl;

      answer = a3 / a4;
      cout << "\n[a3 / a4 -> 1.56]" << endl;
      cout << "a3 / a4 = " << answer << endl;
#endif

#if 1
      // Testing overflow in addition

      cout << "\n*** Testing overflow in addition ***\n\n";

      Fixed a5(1.4, 9), a6(1.3, 9);

      cout << "[a5 = 1.400000000 or 1.4]" << endl;
      cout << "a5 = " << a5 << endl;
      cout << "[a6 = 1.300000000 or 1.3]" << endl;
      cout << "a6 = " << a6 << endl;

      cout << "\n[a5 + a6 -> 'precision reduced' msg & a5 + a6 = 2.70000000 or 2.7]" << endl;
      answer = a5 + a6;
      cout << "a5 + a6 = " << answer << endl;
#endif

#if 1
      // Testing assignment overloading

      cout << "\n*** Testing assignment overloading ***\n\n";

      cout << "[b = g -> b = g = -12.34560 or -12.3456]" << endl;
      b = g;
      cout << "b = " << b << endl;
      cout << "g = " << g << endl;

      cout << "\n[b = g = a -> b = g = a = 0.0]" << endl;
      b = g = a;
      cout << "b = " << b << endl;
      cout << "g = " << g << endl;
      cout << "a = " << a << endl;

      cout << "\n[a = 65.43 -> 65.43]" << endl;
      a = 65.432;
      cout << "a = " << a << endl;

      cout << "\n[a = b = 1.2345 -> a = b = 1.23]" << endl;
      a = b = 1.2345;
      cout << "a = " << a << endl;
      cout << "b = " << b << endl;

      cout << "\n[b = 34.05 -> 34.05]" << endl;
      b = 34.05;
      cout << "b = " << b << endl; 
#endif

#if 1
      // Testing cast operation

      cout << "*** Testing cast operation ***\n\n";

      cout << "[a = 1.23]" << endl;
      cout << "a = " << a << endl;

      cout << "\n[float(a) -> 1.23]" << endl;
      cout << "float(a) = " << float(a) << endl;
      cout << "[a still = 1.23]" << endl;
      cout << "a = " << a << endl;

      cout << "\n[b = 34.05]" << endl;
      cout << "b = " << b << endl;

      cout << "\n[float(b) -> 34.05]" << endl;
      cout << "float(b) = " << float(b) << endl;
      cout << "[b still = 34.05]" << endl;
      cout << "b = " << b << endl;
#endif

#if 1
      // Testing trig operations

      cout << "\n*** Testing trig operations ***\n\n";

      cout << "[c = 12.34]" << endl;
      cout << "c = " << c << endl;

      cout << "\n[sin(c) -> 0.22 or 0.22 with more decimal places]" << endl;
      cout << "sin(c) = " << sin(c) << endl;

      cout << "\n[cos(c) -> 0.97 or 0.97 with more decimal places]" << endl;
      cout << "cos(c) = " << cos(c) << endl;

      cout << "\n[atan(c) -> 1.48 or 1.48 with more decimal places]" << endl;
      cout << "atan(c) = " << atan(c) << endl;
#endif

#if 1
      // Testing pow operation

      cout << "\n*** Testing pow operation ***\n\n";

      cout << "[e = 12.3]" << endl;
      cout << "e = " << e << endl;

      cout << "\n[pow(e, 3) -> 1860.8 or 1860.8 with more decimal places]" << endl;
      cout << "pow(e, 3) = " << pow(e, 3) << endl;
#endif
      cout << "\n*** End of program. ***\n";
}