"David Abrahams" <dave@boost-consulting.com> escribió en el mensaje news:u3c6ywa5w.fsf@boost-consulting.com...
"Dill, John" <john-dill@uiowa.edu> 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?
Indeed. The accepted numeric conversions library handles this case properly (throwing). Right now I'm technically on vacation until next Monday. I'll start working with the review comments right next week. I'll check it in on CVS after I made the neccesary changes. Anyway, users can download the review version from here: http://personales.ciudad.com.ar/fernando_cacciola/numeric_conversions.zip or http://groups.yahoo.com/group/boost/files/numeric_conversions.zip Fernando Cacciola SciSoft