Re: [boost] [math] potentian bug: iround throws, given double( numeric_limits<int>::min() )

Subject: Re: [boost] [math] potentian bug: iround throws, given double( numeric_limits<int>::min() )
From: John Maddock (boost.regex_at_[hidden])
Date: 2011-10-12 07:08:15

> The docs of the Rounding Functions say:
>
> If the argument v is either non-finite or else outside the range of the
> result type, then returns the result of rounding_error: by default this
> throws an instance of boost::math::rounding_error.
>
> So the example shown below seems to show a bug, since
> std::numeric_limits<int>::min() is *not* outside the range of int. Or did 
> I
> miss something?

It's a bug: the error checking is off by one for negative values.

Fixed in Trunk.

Thanks, John.