[boost] Re: numeric_cast

From: David Abrahams (dave_at_[hidden])
Date: 2004-04-20 17:34:51

"Dill, John" <john-dill_at_[hidden]> writes:

> I am wondering about the use-case of numeric_cast in this sample.
>
> unsigned char uchar_max = std::numeric_limits<unsigned char>::max();
> char schar_value = 0;
>
> try {
>   schar_value = boost::numeric_cast<char>( uchar_max );
> }
> catch ( boost::bad_numeric_cast )
> { std::cout << "Overflow occurred..." << std::endl; }
>
> When I execute this sample, I don't get the exception.  What's the
> background on this behavior?  I'm using gcc 3.3.1.

FWIW, there are known problems with numeric_cast, but a numeric
conversion library that replaces the existing implementation has been
accepted into Boost.  We are just waiting for Fernando Cacciola to
check it in.  Fernando?

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com