| 1 | // constexpr test for boost/core/bit.hpp (bit_cast) |
|---|---|
| 2 | // |
| 3 | // Copyright 2023 Peter Dimov |
| 4 | // Distributed under the Boost Software License, Version 1.0. |
| 5 | // https://www.boost.org/LICENSE_1_0.txt |
| 6 | |
| 7 | #include <boost/core/bit.hpp> |
| 8 | #include <boost/cstdint.hpp> |
| 9 | |
| 10 | #include <boost/config.hpp> |
| 11 | #include <boost/config/pragma_message.hpp> |
| 12 | |
| 13 | #if defined(BOOST_NO_CXX11_CONSTEXPR) |
| 14 | |
| 15 | BOOST_PRAGMA_MESSAGE( "Test skipped because BOOST_NO_CXX11_CONSTEXPR is defined") |
| 16 | |
| 17 | #elif !defined(BOOST_CORE_HAS_BUILTIN_BIT_CAST) |
| 18 | |
| 19 | BOOST_PRAGMA_MESSAGE( "Test skipped because BOOST_CORE_HAS_BUILTIN_BIT_CAST is not defined") |
| 20 | |
| 21 | #else |
| 22 | |
| 23 | #define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__) |
| 24 | |
| 25 | STATIC_ASSERT( boost::core::bit_cast<boost::uint32_t>( 1.0f ) == 0x3F800000u ); |
| 26 | STATIC_ASSERT( boost::core::bit_cast<boost::uint64_t>( 1.0 ) == 0x3FF0000000000000ull ); |
| 27 | |
| 28 | #endif |
| 29 |