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Use explicit operator bool when available

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This commit is contained in:
Peter Dimov
2018-03-31 21:11:57 +03:00
committed by James E. King III
parent bffcf0c4db
commit 23cd89d4c8
1 changed files with 11 additions and 0 deletions
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11
include/boost/logic/tribool.hpp
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@ -109,11 +109,22 @@ public:
* \returns true if the 3-state boolean is true, false otherwise
* \throws nothrow
*/
#if !defined( BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS )
BOOST_CONSTEXPR explicit operator bool () const BOOST_NOEXCEPT
{
return value == true_value;
}
#else
BOOST_CONSTEXPR operator safe_bool() const BOOST_NOEXCEPT
{
return value == true_value? &dummy::nonnull : 0;
}
#endif
/**
* The actual stored value in this 3-state boolean, which may be false, true,
* or indeterminate.