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🐛 Fix bit_ceil() to return 1 for input 0 as per specification #199

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Merged
pdimov merged 1 commit into from
Jun 6, 2025
Merged

🐛 Fix bit_ceil() to return 1 for input 0 as per specification #199

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4 changes: 2 additions & 2 deletions include/boost/core/bit.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -703,7 +703,7 @@ BOOST_CXX14_CONSTEXPR inline boost::uint32_t bit_ceil_impl( boost::uint32_t x )
{
if( x == 0 )
{
return 0;
return 1;
}

--x;
Expand All @@ -723,7 +723,7 @@ BOOST_CXX14_CONSTEXPR inline boost::uint64_t bit_ceil_impl( boost::uint64_t x )
{
if( x == 0 )
{
return 0;
return 1;
}

--x;
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2 changes: 1 addition & 1 deletion test/bit_ceil_test.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ template<class T> void test_bit_ceil( T x )

if( x == 0 )
{
BOOST_TEST_EQ( y, 0 );
BOOST_TEST_EQ( y, 1 );
}
else
{
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