floatingPoint.cpp

void smallerF()
{
  cout << "MIN FLOAT test" << endl;
  errno = 0;
  stringstream ss;
  ss << "1.17549430e-39";
  cout << "Min possible :\t" << FLT_MIN << endl;
  cout << "str: \t\t" << ss.str() << endl;
  float converted = strtof(ss.str().c_str(), NULL);
  cout << "Error: \t\t" << (errno == ERANGE ? "Range error" : "No error") << endl;
  cout << "Converted: \t" << converted << endl;
  cout << "Normal :\t" << (isnormal(converted) ? "True" : "False") << endl;
  cout << "Comparison: \t" << (converted < FLT_MIN ? "smaller" : "greater or equal") << endl;
}