2023-05-29 21:59:37 +03:00
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// constexpr test for boost/core/bit.hpp (bit_width)
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//
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// Copyright 2023 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/config.hpp>
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#include <boost/config/pragma_message.hpp>
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#if defined(BOOST_NO_CXX14_CONSTEXPR)
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BOOST_PRAGMA_MESSAGE( "Test skipped because BOOST_NO_CXX14_CONSTEXPR is defined" )
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2023-05-30 02:56:37 +03:00
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#elif defined(BOOST_MSVC) && BOOST_MSVC / 10 == 191
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BOOST_PRAGMA_MESSAGE( "Test skipped because BOOST_MSVC is " BOOST_STRINGIZE(BOOST_MSVC) )
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2023-05-29 21:59:37 +03:00
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#else
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#include <boost/core/bit.hpp>
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#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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STATIC_ASSERT( boost::core::bit_width( (unsigned char)0x74 ) == 7 );
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STATIC_ASSERT( boost::core::bit_width( (unsigned short)0x7400 ) == 15 );
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STATIC_ASSERT( boost::core::bit_width( 0x740000u ) == 23 );
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STATIC_ASSERT( boost::core::bit_width( 0x74000000ul ) == 31 );
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STATIC_ASSERT( boost::core::bit_width( 0x7400000000ull ) == 39 );
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#endif
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