| 1 | // constexpr test for boost/core/bit.hpp (bit_width) |
|---|---|
| 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/config.hpp> |
| 8 | #include <boost/config/pragma_message.hpp> |
| 9 | |
| 10 | #if defined(BOOST_NO_CXX14_CONSTEXPR) |
| 11 | |
| 12 | BOOST_PRAGMA_MESSAGE( "Test skipped because BOOST_NO_CXX14_CONSTEXPR is defined") |
| 13 | |
| 14 | #elif defined(BOOST_MSVC) && BOOST_MSVC / 10 == 191 |
| 15 | |
| 16 | BOOST_PRAGMA_MESSAGE( "Test skipped because BOOST_MSVC is "BOOST_STRINGIZE(BOOST_MSVC) ) |
| 17 | |
| 18 | #else |
| 19 | |
| 20 | #include <boost/core/bit.hpp> |
| 21 | #include <cstdint> |
| 22 | |
| 23 | #define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__) |
| 24 | |
| 25 | STATIC_ASSERT( boost::core::byteswap( (std::int8_t)0x01 ) == 0x01 ); |
| 26 | STATIC_ASSERT( boost::core::byteswap( (std::uint8_t)0xF1 ) == 0xF1 ); |
| 27 | |
| 28 | STATIC_ASSERT( boost::core::byteswap( (std::int16_t)0x0102 ) == 0x0201 ); |
| 29 | STATIC_ASSERT( boost::core::byteswap( (std::uint16_t)0xF1E2 ) == 0xE2F1 ); |
| 30 | |
| 31 | STATIC_ASSERT( boost::core::byteswap( (std::int32_t)0x01020304 ) == 0x04030201 ); |
| 32 | STATIC_ASSERT( boost::core::byteswap( (std::uint32_t)0xF1E2D3C4u ) == 0xC4D3E2F1u ); |
| 33 | |
| 34 | STATIC_ASSERT( boost::core::byteswap( (std::int64_t)0x0102030405060708ll ) == 0x0807060504030201ll ); |
| 35 | STATIC_ASSERT( boost::core::byteswap( (std::uint64_t)0xF1E2D3C4B5A69788ull ) == 0x8897A6B5C4D3E2F1ull ); |
| 36 | |
| 37 | #endif |
| 38 |