endian/detail/integral_by_size.hpp

0001 #ifndef BOOST_ENDIAN_DETAIL_INTEGRAL_BY_SIZE_HPP_INCLUDED
0002 #define BOOST_ENDIAN_DETAIL_INTEGRAL_BY_SIZE_HPP_INCLUDED
0003
0004 // Copyright 2019 Peter Dimov
0005 //
0006 // Distributed under the Boost Software License, Version 1.0.
0007 // http://www.boost.org/LICENSE_1_0.txt
0008
0009 #include <cstdint>
0010 #include <cstddef>
0011
0012 namespace boost
0013 {
0014 namespace endian
0015 {
0016 namespace detail
0017 {
0018
0019 template<std::size_t N> struct integral_by_size
0020 {
0021 };
0022
0023 template<> struct integral_by_size<1>
0024 {
0025     typedef std::uint8_t type;
0026 };
0027
0028 template<> struct integral_by_size<2>
0029 {
0030     typedef std::uint16_t type;
0031 };
0032
0033 template<> struct integral_by_size<4>
0034 {
0035     typedef std::uint32_t type;
0036 };
0037
0038 template<> struct integral_by_size<8>
0039 {
0040     typedef std::uint64_t type;
0041 };
0042
0043 #if defined(__SIZEOF_INT128__)
0044
0045 template<> struct integral_by_size<16>
0046 {
0047     typedef __uint128_t type;
0048 };
0049
0050 #endif
0051
0052 } // namespace detail
0053 } // namespace endian
0054 } // namespace boost
0055
0056 #endif  // BOOST_ENDIAN_DETAIL_INTEGRAL_BY_SIZE_HPP_INCLUDED