floating point comparison algorithm

[nobody]

The floating point comparison algorithm does not seem 
to work if one of the floating points is zero and the 
other one is close to zero. Here's the code sample 
I've used:

close_at_tolerance<double> checker(0.01);

const double a = 0.0;
const double b = 0.0000001;

bool res = checker(a, b);
if (!res)
{
  std::cerr << "ERROR" << std::endl;
}

I think the following check must be added in the 
close_at_tolerance<FPT>::operator() function:
bool operator()( FPT left, FPT right ) const
{
   if (left == 0.0 || right == 0.0)
   {
      return (p_fraction_tolerance.get() >  
              tt_detail::fpt_abs(left-right));
   }

   // ...
}

My email address is "tom.vanroey@vito.be".

[Gennadiy Rozental]

Logged In: YES 
user_id=331868

Not a bug