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Add extra overloads for hash_value to cover all the specializations of boost::hash. Fixes 1095

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[SVN r38881]
This commit is contained in:
Daniel James
2007-08-24 01:44:15 +00:00
parent c388716534
commit 93b80b365f
3 changed files with 80 additions and 7 deletions
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include/boost/functional/hash/hash.hpp
+49 -7
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@@ -35,17 +35,21 @@
namespace boost
{
#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
// Borland complains about an ambiguous function overload
// when compiling boost::hash<bool>.
std::size_t hash_value(bool);
#endif
std::size_t hash_value(char);
std::size_t hash_value(unsigned char);
std::size_t hash_value(signed char);
std::size_t hash_value(short);
std::size_t hash_value(unsigned short);
std::size_t hash_value(int);
std::size_t hash_value(unsigned int);
std::size_t hash_value(long);
std::size_t hash_value(unsigned long);
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
std::size_t hash_value(wchar_t);
#endif
#if defined(BOOST_HAS_LONG_LONG) && defined(_M_X64) && defined(_WIN64)
// On 64-bit windows std::size_t is a typedef for unsigned long long, which
// isn't due to be supported until Boost 1.35. So add support here.
@@ -95,12 +99,34 @@ namespace boost
// Implementation
#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
inline std::size_t hash_value(bool v)
{
return static_cast<std::size_t>(v);
}
#endif
inline std::size_t hash_value(char v)
{
return static_cast<std::size_t>(v);
}
inline std::size_t hash_value(unsigned char v)
{
return static_cast<std::size_t>(v);
}
inline std::size_t hash_value(signed char v)
{
return static_cast<std::size_t>(v);
}
inline std::size_t hash_value(short v)
{
return static_cast<std::size_t>(v);
}
inline std::size_t hash_value(unsigned short v)
{
return static_cast<std::size_t>(v);
}
inline std::size_t hash_value(int v)
{
@@ -122,6 +148,13 @@ namespace boost
return static_cast<std::size_t>(v);
}
#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
inline std::size_t hash_value(wchar_t v)
{
return static_cast<std::size_t>(v);
}
#endif
#if defined(BOOST_HAS_LONG_LONG) && defined(_M_X64) && defined(_WIN64)
inline std::size_t hash_value(long long v)
{
@@ -292,6 +325,15 @@ namespace boost
return hash_range(v.begin(), v.end());
}
template <class T>
std::size_t hash_value(std::complex<T> const& v)
{
boost::hash<T> hasher;
std::size_t seed = hasher(v.imag());
seed ^= hasher(v.real()) + (seed<<6) + (seed>>2);
return seed;
}
//
// boost::hash
//