On Thu, Jan 13, 2005 at 05:02:33PM +0100, Kristian Dupont wrote:
Forgive me if this topic has been discussed before - searching for "casts" and the like in the archives bring out quite a lot of results :)
Although numeric_cast allows you to safely cast between numeric types, I find that it can sometimes come in handy to just receive the saturated value in the case of an overflow. A simplified solution would look something like this:
template<class Source, class Target>
Should that be template<class Target, class Source> because you want Source to be deduced? jon
inline Target saturated_cast(Source val) { BOOST_STATIC_ASSERT(std::numeric_limits<Target>::is_specialized);
if(val < (std::numeric_limits<Target>::min)()) return (std::numeric_limits<Target>::min)();
if(val > (std::numeric_limits<Target>::max)()) return (std::numeric_limits<Target>::max)();
return static_cast<Target>(val); }
I think that this would fit nicely into cast.hpp. Any comments?
Kristian Dupont
-- "Outside of a dog, a man's best friend is a book. Inside of a dog, it's too dark to read." -Groucho Marx