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[/
Copyright 2007 John Maddock.
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt).
]
[section:promote promote]
template <class T>
struct promote
{
typedef __below type;
};
template <class T> using promote_t = typename promote<T>::type; // C++11 and above
__type If integral or floating point promotion can be applied to an rvalue
of type `T`, then applies integral and floating point promotions to `T` and
keeps cv-qualifiers of `T`, otherwise leaves `T` unchanged. See also
__integral_promotion and __floating_point_promotion.
__std_ref 4.5 except 4.5/3 (integral bit-field) and 4.6.
[all_compilers]
__header ` #include <boost/type_traits/promote.hpp>` or ` #include <boost/type_traits.hpp>`
[table Examples
[ [Expression] [Result Type]]
[[`promote<short volatile>::type`][`int volatile`]]
[[`promote<float const>::type`][`double const`]]
[[`promote<short&>::type`][`short&`]]
]
[endsect]
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