ceph/src/boost/libs/type_traits/doc/integral_promotion.qbk

   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