src/tests/paranoidcalculator.cpp

   1 #include "main.h"
   2 #include "real.h"
   3 #include <cmath>
   4 #include <cassert>
   5 #include <list>
   6 #include <bitset>
   7 #include <iostream>
   8 #include <cfloat>
   9 #include <fenv.h>
  10 #include "paranoidnumber.h"
  11
  12 using namespace std;
  13 using namespace IPDF;
  14
  15 int main(int argc, char ** argv)
  16 {
  17         Debug("FLT_MAX = %.40f", FLT_MAX);
  18         Debug("FLT_MIN = %.40f", FLT_MIN);
  19         Debug("FLT_EPSILON = %.40f", FLT_EPSILON);
  20         Debug("Sizeof ParanoidNumber::digit_t is %u", sizeof(ParanoidNumber::digit_t));
  21         Debug("Sizeof ParanoidNumber is %u", sizeof(ParanoidNumber));
  22         Debug("Sizeof double is %u", sizeof(double));
  23         Debug("Sizeof ParanoidNumber* %u", sizeof(ParanoidNumber*));
  24
  25         string token("");
  26         cin >> token;
  27         ParanoidNumber a(token.c_str());
  28         double da = a.ToDouble();
  29         float fa = da;
  30         while (cin.good())
  31         {
  32                 char op;
  33                 cin >> op;
  34                 token = "";
  35                 for (char c = cin.peek(); cin.good() && !iswspace(c); c = cin.peek())
  36                 {
  37                         if (c == '+' || c == '-' || c == '*' || c == '/')
  38                         {
  39                                 break;
  40                         }
  41                         token += c;
  42                         c = cin.get();
  43                 }
  44                 //Debug("String is \"%s\"", token.c_str());
  45                 float fb = strtof(token.c_str(), NULL);
  46                 double db = strtod(token.c_str(), NULL);
  47                 ParanoidNumber b(token.c_str());
  48                 Debug("a is {%s} \"%lf\"", a.Str().c_str(), a.ToDouble());
  49                 Debug("b is {%s} \"%lf\"", b.Str().c_str(), b.ToDouble());
  50                 Debug("db is %lf", db);
  51                 switch (op)
  52                 {
  53                         case '+':
  54                                 a += b;
  55                                 fa += fb;
  56                                 da += db;
  57                                 break;
  58                         case '-':
  59                                 a -= b;
  60                                 fa -= fb;
  61                                 da -= db;
  62                                 break;
  63                         case '*':
  64                                 a *= b;
  65                                 fa *= fb;
  66                                 da *= db;
  67                                 break;
  68                         case '/':
  69                                 a /= b;
  70                                 fa /= fb;
  71                                 da /= db;
  72                                 break;
  73                 }
  74
  75                 Debug("a is: {%s}", a.Str().c_str());
  76                 Debug("a as double: %.40lf", a.ToDouble());
  77                 Debug("a as float: %.40f", a.ToFloat());
  78                 Debug("a as int64_t: %ld", a.Convert<int64_t>());
  79                 Debug("floats give: %.40f", fa);
  80                 Debug("double gives: %.40lf", da);
  81
  82
  83         }
  84 }