I was running some tests on the max_of, min_of etc. templates I've
proposed some days ago and, *as expected*, VC++ gave problems with
integral conversions of enumerators. As I think you all know, if you
have something like
enum e { e1 = 1u << 31 };
then it simply "promotes" e1 to int instead of unsigned int. For
instance this
enum e { e1 = 2147483648u };
#include <iostream>
int main() {
std::cout << e1 << '\n';
}
outputs -2147483648. Applied to my code, where I have e.g.
template<>
struct max_of<unsigned int> {
BOOST_STATIC_CONSTANT( promoted_of<unsigned int>::type,
value = UINT_MAX
);
};
this means that max_of<unsigned int>::value, and of course
max_of<unsigned long>::value, will simply be converted to -1. Before
inventing my own solution, has boost already a workaround or a
convention for this problem?
Thanks,
Genny.
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