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Borland workaround for hashing arrays.

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[SVN r28226]
This commit is contained in:
Daniel James
2005-04-13 20:24:50 +00:00
parent 9cd9c5780f
commit 976683836e
1 changed files with 20 additions and 0 deletions
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20
include/boost/functional/hash/hash.hpp
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@@ -197,11 +197,31 @@ namespace boost
} }
#if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING) #if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
#if !defined(__BORLANDC__)
template< class T, unsigned N > template< class T, unsigned N >
inline std::size_t hash_value(const T (&array)[N]) inline std::size_t hash_value(const T (&array)[N])
{ {
return hash_range(array, array+N); return hash_range(array, array+N);
} }
#else
// On Borland some type information was lost in the call to hash_combine
// from hash_range, so inline everything here so that doesn't happen.
template< class T, unsigned N >
inline std::size_t hash_value(const T (&array)[N])
{
std::size_t seed = 0;
T const* first = array;
T const* last = array + N;
for(; first != last; ++first)
{
seed ^= hash_detail::call_hash<T>::call(*first)
+ 0x9e3779b9 + (seed<<6) + (seed>>2);
}
return seed;
}
#endif
#endif #endif
#if BOOST_WORKAROUND(__GNUC__, < 3) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION) #if BOOST_WORKAROUND(__GNUC__, < 3) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)