Boost C++ Libraries

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integral_promotion

template <class T>
struct integral_promotion
{
   typedef see-below type;
};

type: If integral promotion can be applied to an rvalue of type T, then applies integral promotion to T and keeps cv-qualifiers of T, otherwise leaves T unchanged.

C++ Standard Reference: 4.5 except 4.5/3 (integral bit-field).

Header: #include <boost/type_traits/integral_promotion.hpp> or #include <boost/type_traits.hpp>

Table 1.16. Examples

Expression

Result Type

integral_promotion<short const>::type

int const

integral_promotion<short&>::type

short&

integral_promotion<enum std::float_round_style>::type

int



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