Re: [Boost-users] [Conversion] numeric_cast from floating to integraltypes

Hi Rainer, Sorry I just saw this.

Hi all,

I just discovered (by debugging instead of reading :-() that a numeric_cast from a floating to an integral type always truncates by default, that is, 26.99999 is casted to 26. Is there a way to tell numeric_cast to use the nearest integer? Of course I can add 0.5 to my value and cast afterwards but that's definitely ugly.

numeric_cast<> uses the default policies, but you an easily create you own version with any other policy, like the one which rounds floats to the nearest integer: RoundEven<> #include template inline Target my_numeric_cast ( Source arg ) { typedef boost::numeric::conversion_traits Traits ; typedef boost::numeric::converter

Converter ;

return Converter::convert(arg); } HTH -- Fernando Cacciola SciSoft http://scisoft-consulting.com http://fcacciola.50webs.com http://groups.google.com/group/cppba