Re: [Boost-users] max value by the number of bits

Christian Henning wrote:

Hi there,

is there a general template for calculating the max value by the number of bits. GIL right now uses the following template:

template <int K> struct unsigned_integral_max_value : public mpl::integral_c {};

This code gives me some compiler errors with clang 3.2. for K = 31, for instance. Ideally I would like to take K up to 64.

A small fix gets me up to K = 63

template <int K> struct unsigned_integral_max_value : public mpl::integral_c {};

Is there a better way in boost?

boost::int_max_value_t<V> http://www.boost.org/doc/libs/1_53_0/libs/integer/doc/html/boost_integer/int...

Thanks, Christian