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Use C++17 if constexpr where possible.

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This commit is contained in:
Andrey Semashev
2021-11-01 00:02:39 +03:00
parent a4172b4319
commit 213e4695bf
1 changed files with 8 additions and 8 deletions
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16
include/boost/core/bit.hpp
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@ -171,15 +171,15 @@ int countl_zero( T x ) BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( sizeof(T) == sizeof(boost::uint8_t) || sizeof(T) == sizeof(boost::uint16_t) || sizeof(T) == sizeof(boost::uint32_t) || sizeof(T) == sizeof(boost::uint64_t) );
if( sizeof(T) == sizeof(boost::uint8_t) )
BOOST_IF_CONSTEXPR ( sizeof(T) == sizeof(boost::uint8_t) )
{
return boost::core::detail::countl_impl( static_cast<boost::uint8_t>( x ) );
}
else if( sizeof(T) == sizeof(boost::uint16_t) )
else BOOST_IF_CONSTEXPR ( sizeof(T) == sizeof(boost::uint16_t) )
{
return boost::core::detail::countl_impl( static_cast<boost::uint16_t>( x ) );
}
else if( sizeof(T) == sizeof(boost::uint32_t) )
else BOOST_IF_CONSTEXPR ( sizeof(T) == sizeof(boost::uint32_t) )
{
return boost::core::detail::countl_impl( static_cast<boost::uint32_t>( x ) );
}
@ -306,15 +306,15 @@ int countr_zero( T x ) BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( sizeof(T) == sizeof(boost::uint8_t) || sizeof(T) == sizeof(boost::uint16_t) || sizeof(T) == sizeof(boost::uint32_t) || sizeof(T) == sizeof(boost::uint64_t) );
if( sizeof(T) == sizeof(boost::uint8_t) )
BOOST_IF_CONSTEXPR ( sizeof(T) == sizeof(boost::uint8_t) )
{
return boost::core::detail::countr_impl( static_cast<boost::uint8_t>( x ) );
}
else if( sizeof(T) == sizeof(boost::uint16_t) )
else BOOST_IF_CONSTEXPR ( sizeof(T) == sizeof(boost::uint16_t) )
{
return boost::core::detail::countr_impl( static_cast<boost::uint16_t>( x ) );
}
else if( sizeof(T) == sizeof(boost::uint32_t) )
else BOOST_IF_CONSTEXPR ( sizeof(T) == sizeof(boost::uint32_t) )
{
return boost::core::detail::countr_impl( static_cast<boost::uint32_t>( x ) );
}
@ -410,7 +410,7 @@ BOOST_CXX14_CONSTEXPR int popcount( T x ) BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( sizeof(T) <= sizeof(boost::uint64_t) );
if( sizeof(T) <= sizeof(boost::uint32_t) )
BOOST_IF_CONSTEXPR ( sizeof(T) <= sizeof(boost::uint32_t) )
{
return boost::core::detail::popcount_impl( static_cast<boost::uint32_t>( x ) );
}
@ -509,7 +509,7 @@ BOOST_CXX14_CONSTEXPR T bit_ceil( T x ) BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( sizeof(T) <= sizeof(boost::uint64_t) );
if( sizeof(T) <= sizeof(boost::uint32_t) )
BOOST_IF_CONSTEXPR ( sizeof(T) <= sizeof(boost::uint32_t) )
{
return static_cast<T>( boost::core::detail::bit_ceil_impl( static_cast<boost::uint32_t>( x ) ) );
}