boost/hash2/is_contiguously_hashable.hpp

0001 #ifndef BOOST_HASH2_IS_CONTIGUOUSLY_HASHABLE_HPP_INCLUDED
0002 #define BOOST_HASH2_IS_CONTIGUOUSLY_HASHABLE_HPP_INCLUDED
0003
0004 // Copyright 2017, 2023, 2024 Peter Dimov.
0005 // Distributed under the Boost Software License, Version 1.0.
0006 // https://www.boost.org/LICENSE_1_0.txt
0007
0008 #include <boost/hash2/is_trivially_equality_comparable.hpp>
0009 #include <boost/hash2/is_endian_independent.hpp>
0010 #include <boost/hash2/endian.hpp>
0011 #include <type_traits>
0012 #include <cstddef>
0013
0014 namespace boost
0015 {
0016 namespace hash2
0017 {
0018
0019 template<class T, endian E> struct is_contiguously_hashable:
0020     std::integral_constant<bool, is_trivially_equality_comparable<T>::value && (E == endian::native || is_endian_independent<T>::value)>
0021 {
0022 };
0023
0024 template<class T, std::size_t N, endian E> struct is_contiguously_hashable<T[N], E>:
0025     is_contiguously_hashable<T, E>
0026 {
0027 };
0028
0029 } // namespace hash2
0030 } // namespace boost
0031
0032 #endif // #ifndef BOOST_HASH2_IS_CONTIGUOUSLY_HASHABLE_HPP_INCLUDED