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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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