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1 | [/ |
2 | Copyright 2007 John Maddock. | |
3 | Distributed under the Boost Software License, Version 1.0. | |
4 | (See accompanying file LICENSE_1_0.txt or copy at | |
5 | http://www.boost.org/LICENSE_1_0.txt). | |
6 | ] | |
7 | ||
8 | [section:integral_promotion integral_promotion] | |
9 | ||
10 | template <class T> | |
11 | struct integral_promotion | |
12 | { | |
13 | typedef __below type; | |
14 | }; | |
15 | ||
16 | __type If integral promotion can be applied to an rvalue of type `T`, then | |
17 | applies integral promotion to `T` and keeps cv-qualifiers of `T`, | |
18 | otherwise leaves `T` unchanged. | |
19 | ||
20 | __std_ref 4.5 except 4.5/3 (integral bit-field). | |
21 | ||
22 | __header ` #include <boost/type_traits/integral_promotion.hpp>` or ` #include <boost/type_traits.hpp>` | |
23 | ||
24 | [table Examples | |
25 | ||
26 | [ [Expression] [Result Type]] | |
27 | ||
28 | [[`integral_promotion<short const>::type`][`int const`]] | |
29 | ||
30 | [[`integral_promotion<short&>::type`][`short&`]] | |
31 | ||
32 | [[`integral_promotion<enum std::float_round_style>::type`][`int`]] | |
33 | ||
34 | ] | |
35 | ||
36 | [endsect] | |
37 |