-// Copyright 2005-2014 Daniel James.
+// Copyright 2005-2009 Daniel James.
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-// Based on Peter Dimov's proposal
-// http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf
-// issue 6.18.
-//
-// This also contains public domain code from MurmurHash. From the
-// MurmurHash header:
-
-// MurmurHash3 was written by Austin Appleby, and is placed in the public
-// domain. The author hereby disclaims copyright to this source code.
-
-#if !defined(BOOST_FUNCTIONAL_HASH_HASH_HPP)
-#define BOOST_FUNCTIONAL_HASH_HASH_HPP
-
-#include <boost/functional/hash/hash_fwd.hpp>
-#include <functional>
-#include <boost/functional/hash/detail/hash_float.hpp>
-#include <string>
-#include <boost/limits.hpp>
-#include <boost/type_traits/is_enum.hpp>
-#include <boost/type_traits/is_integral.hpp>
-#include <boost/utility/enable_if.hpp>
-#include <boost/cstdint.hpp>
-
-#if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
-#include <boost/type_traits/is_pointer.hpp>
-#endif
-
-#if !defined(BOOST_NO_CXX11_HDR_TYPEINDEX)
-#include <typeindex>
-#endif
-
-#if defined(BOOST_MSVC)
-#pragma warning(push)
-
-#if BOOST_MSVC >= 1400
-#pragma warning(disable:6295) // Ill-defined for-loop : 'unsigned int' values
- // are always of range '0' to '4294967295'.
- // Loop executes infinitely.
-#endif
-
-#endif
-
-#if BOOST_WORKAROUND(__GNUC__, < 3) \
- && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
-#define BOOST_HASH_CHAR_TRAITS string_char_traits
-#else
-#define BOOST_HASH_CHAR_TRAITS char_traits
-#endif
-
-#if defined(_MSC_VER)
-# define BOOST_FUNCTIONAL_HASH_ROTL32(x, r) _rotl(x,r)
-#else
-# define BOOST_FUNCTIONAL_HASH_ROTL32(x, r) (x << r) | (x >> (32 - r))
-#endif
-
-namespace boost
-{
- namespace hash_detail
- {
-#if defined(_HAS_AUTO_PTR_ETC) && !_HAS_AUTO_PTR_ETC
- template <typename T>
- struct hash_base
- {
- typedef T argument_type;
- typedef std::size_t result_type;
- };
-#else
- template <typename T>
- struct hash_base : std::unary_function<T, std::size_t> {};
-#endif
-
- struct enable_hash_value { typedef std::size_t type; };
-
- template <typename T> struct basic_numbers {};
- template <typename T> struct long_numbers;
- template <typename T> struct ulong_numbers;
- template <typename T> struct float_numbers {};
-
- template <> struct basic_numbers<bool> :
- boost::hash_detail::enable_hash_value {};
- template <> struct basic_numbers<char> :
- boost::hash_detail::enable_hash_value {};
- template <> struct basic_numbers<unsigned char> :
- boost::hash_detail::enable_hash_value {};
- template <> struct basic_numbers<signed char> :
- boost::hash_detail::enable_hash_value {};
- template <> struct basic_numbers<short> :
- boost::hash_detail::enable_hash_value {};
- template <> struct basic_numbers<unsigned short> :
- boost::hash_detail::enable_hash_value {};
- template <> struct basic_numbers<int> :
- boost::hash_detail::enable_hash_value {};
- template <> struct basic_numbers<unsigned int> :
- boost::hash_detail::enable_hash_value {};
- template <> struct basic_numbers<long> :
- boost::hash_detail::enable_hash_value {};
- template <> struct basic_numbers<unsigned long> :
- boost::hash_detail::enable_hash_value {};
-
-#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
- template <> struct basic_numbers<wchar_t> :
- boost::hash_detail::enable_hash_value {};
-#endif
-
-#if !defined(BOOST_NO_CXX11_CHAR16_T)
- template <> struct basic_numbers<char16_t> :
- boost::hash_detail::enable_hash_value {};
-#endif
-
-#if !defined(BOOST_NO_CXX11_CHAR32_T)
- template <> struct basic_numbers<char32_t> :
- boost::hash_detail::enable_hash_value {};
-#endif
-
- // long_numbers is defined like this to allow for separate
- // specialization for long_long and int128_type, in case
- // they conflict.
- template <typename T> struct long_numbers2 {};
- template <typename T> struct ulong_numbers2 {};
- template <typename T> struct long_numbers : long_numbers2<T> {};
- template <typename T> struct ulong_numbers : ulong_numbers2<T> {};
-
-#if !defined(BOOST_NO_LONG_LONG)
- template <> struct long_numbers<boost::long_long_type> :
- boost::hash_detail::enable_hash_value {};
- template <> struct ulong_numbers<boost::ulong_long_type> :
- boost::hash_detail::enable_hash_value {};
-#endif
-
-#if defined(BOOST_HAS_INT128)
- template <> struct long_numbers2<boost::int128_type> :
- boost::hash_detail::enable_hash_value {};
- template <> struct ulong_numbers2<boost::uint128_type> :
- boost::hash_detail::enable_hash_value {};
-#endif
-
- template <> struct float_numbers<float> :
- boost::hash_detail::enable_hash_value {};
- template <> struct float_numbers<double> :
- boost::hash_detail::enable_hash_value {};
- template <> struct float_numbers<long double> :
- boost::hash_detail::enable_hash_value {};
- }
-
- template <typename T>
- typename boost::hash_detail::basic_numbers<T>::type hash_value(T);
- template <typename T>
- typename boost::hash_detail::long_numbers<T>::type hash_value(T);
- template <typename T>
- typename boost::hash_detail::ulong_numbers<T>::type hash_value(T);
-
- template <typename T>
- typename boost::enable_if<boost::is_enum<T>, std::size_t>::type
- hash_value(T);
-
-#if !BOOST_WORKAROUND(__DMC__, <= 0x848)
- template <class T> std::size_t hash_value(T* const&);
-#else
- template <class T> std::size_t hash_value(T*);
-#endif
-
-#if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
- template< class T, unsigned N >
- std::size_t hash_value(const T (&x)[N]);
-
- template< class T, unsigned N >
- std::size_t hash_value(T (&x)[N]);
-#endif
-
- template <class Ch, class A>
- std::size_t hash_value(
- std::basic_string<Ch, std::BOOST_HASH_CHAR_TRAITS<Ch>, A> const&);
-
- template <typename T>
- typename boost::hash_detail::float_numbers<T>::type hash_value(T);
-
-#if !defined(BOOST_NO_CXX11_HDR_TYPEINDEX)
- std::size_t hash_value(std::type_index);
-#endif
-
- // Implementation
-
- namespace hash_detail
- {
- template <class T>
- inline std::size_t hash_value_signed(T val)
- {
- const unsigned int size_t_bits = std::numeric_limits<std::size_t>::digits;
- // ceiling(std::numeric_limits<T>::digits / size_t_bits) - 1
- const int length = (std::numeric_limits<T>::digits - 1)
- / static_cast<int>(size_t_bits);
-
- std::size_t seed = 0;
- T positive = val < 0 ? -1 - val : val;
-
- // Hopefully, this loop can be unrolled.
- for(unsigned int i = length * size_t_bits; i > 0; i -= size_t_bits)
- {
- seed ^= (std::size_t) (positive >> i) + (seed<<6) + (seed>>2);
- }
- seed ^= (std::size_t) val + (seed<<6) + (seed>>2);
-
- return seed;
- }
-
- template <class T>
- inline std::size_t hash_value_unsigned(T val)
- {
- const unsigned int size_t_bits = std::numeric_limits<std::size_t>::digits;
- // ceiling(std::numeric_limits<T>::digits / size_t_bits) - 1
- const int length = (std::numeric_limits<T>::digits - 1)
- / static_cast<int>(size_t_bits);
-
- std::size_t seed = 0;
-
- // Hopefully, this loop can be unrolled.
- for(unsigned int i = length * size_t_bits; i > 0; i -= size_t_bits)
- {
- seed ^= (std::size_t) (val >> i) + (seed<<6) + (seed>>2);
- }
- seed ^= (std::size_t) val + (seed<<6) + (seed>>2);
-
- return seed;
- }
-
- template <typename SizeT>
- inline void hash_combine_impl(SizeT& seed, SizeT value)
- {
- seed ^= value + 0x9e3779b9 + (seed<<6) + (seed>>2);
- }
-
- inline void hash_combine_impl(boost::uint32_t& h1,
- boost::uint32_t k1)
- {
- const uint32_t c1 = 0xcc9e2d51;
- const uint32_t c2 = 0x1b873593;
-
- k1 *= c1;
- k1 = BOOST_FUNCTIONAL_HASH_ROTL32(k1,15);
- k1 *= c2;
-
- h1 ^= k1;
- h1 = BOOST_FUNCTIONAL_HASH_ROTL32(h1,13);
- h1 = h1*5+0xe6546b64;
- }
-
-
-// Don't define 64-bit hash combine on platforms without 64 bit integers,
-// and also not for 32-bit gcc as it warns about the 64-bit constant.
-#if !defined(BOOST_NO_INT64_T) && \
- !(defined(__GNUC__) && ULONG_MAX == 0xffffffff)
-
- inline void hash_combine_impl(boost::uint64_t& h,
- boost::uint64_t k)
- {
- const boost::uint64_t m = UINT64_C(0xc6a4a7935bd1e995);
- const int r = 47;
-
- k *= m;
- k ^= k >> r;
- k *= m;
-
- h ^= k;
- h *= m;
-
- // Completely arbitrary number, to prevent 0's
- // from hashing to 0.
- h += 0xe6546b64;
- }
-
-#endif // BOOST_NO_INT64_T
- }
-
- template <typename T>
- typename boost::hash_detail::basic_numbers<T>::type hash_value(T v)
- {
- return static_cast<std::size_t>(v);
- }
-
- template <typename T>
- typename boost::hash_detail::long_numbers<T>::type hash_value(T v)
- {
- return hash_detail::hash_value_signed(v);
- }
-
- template <typename T>
- typename boost::hash_detail::ulong_numbers<T>::type hash_value(T v)
- {
- return hash_detail::hash_value_unsigned(v);
- }
-
- template <typename T>
- typename boost::enable_if<boost::is_enum<T>, std::size_t>::type
- hash_value(T v)
- {
- return static_cast<std::size_t>(v);
- }
-
- // Implementation by Alberto Barbati and Dave Harris.
-#if !BOOST_WORKAROUND(__DMC__, <= 0x848)
- template <class T> std::size_t hash_value(T* const& v)
-#else
- template <class T> std::size_t hash_value(T* v)
-#endif
- {
-#if defined(__VMS) && __INITIAL_POINTER_SIZE == 64
- // for some reason ptrdiff_t on OpenVMS compiler with
- // 64 bit is not 64 bit !!!
- std::size_t x = static_cast<std::size_t>(
- reinterpret_cast<long long int>(v));
-#else
- std::size_t x = static_cast<std::size_t>(
- reinterpret_cast<std::ptrdiff_t>(v));
-#endif
- return x + (x >> 3);
- }
-
-#if defined(BOOST_MSVC)
-#pragma warning(push)
-#if BOOST_MSVC <= 1400
-#pragma warning(disable:4267) // 'argument' : conversion from 'size_t' to
- // 'unsigned int', possible loss of data
- // A misguided attempt to detect 64-bit
- // incompatability.
-#endif
-#endif
-
- template <class T>
- inline void hash_combine(std::size_t& seed, T const& v)
- {
- boost::hash<T> hasher;
- return boost::hash_detail::hash_combine_impl(seed, hasher(v));
- }
-
-#if defined(BOOST_MSVC)
-#pragma warning(pop)
-#endif
-
- template <class It>
- inline std::size_t hash_range(It first, It last)
- {
- std::size_t seed = 0;
-
- for(; first != last; ++first)
- {
- hash_combine(seed, *first);
- }
-
- return seed;
- }
-
- template <class It>
- inline void hash_range(std::size_t& seed, It first, It last)
- {
- for(; first != last; ++first)
- {
- hash_combine(seed, *first);
- }
- }
-
-#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
- template <class T>
- inline std::size_t hash_range(T* first, T* last)
- {
- std::size_t seed = 0;
-
- for(; first != last; ++first)
- {
- boost::hash<T> hasher;
- seed ^= hasher(*first) + 0x9e3779b9 + (seed<<6) + (seed>>2);
- }
-
- return seed;
- }
-
- template <class T>
- inline void hash_range(std::size_t& seed, T* first, T* last)
- {
- for(; first != last; ++first)
- {
- boost::hash<T> hasher;
- seed ^= hasher(*first) + 0x9e3779b9 + (seed<<6) + (seed>>2);
- }
- }
-#endif
-
-#if !defined(BOOST_NO_FUNCTION_TEMPLATE_ORDERING)
- template< class T, unsigned N >
- inline std::size_t hash_value(const T (&x)[N])
- {
- return hash_range(x, x + N);
- }
-
- template< class T, unsigned N >
- inline std::size_t hash_value(T (&x)[N])
- {
- return hash_range(x, x + N);
- }
-#endif
-
- template <class Ch, class A>
- inline std::size_t hash_value(
- std::basic_string<Ch, std::BOOST_HASH_CHAR_TRAITS<Ch>, A> const& v)
- {
- return hash_range(v.begin(), v.end());
- }
-
- template <typename T>
- typename boost::hash_detail::float_numbers<T>::type hash_value(T v)
- {
- return boost::hash_detail::float_hash_value(v);
- }
-
-#if !defined(BOOST_NO_CXX11_HDR_TYPEINDEX)
- inline std::size_t hash_value(std::type_index v)
- {
- return v.hash_code();
- }
-#endif
-
- //
- // boost::hash
- //
-
- // Define the specializations required by the standard. The general purpose
- // boost::hash is defined later in extensions.hpp if
- // BOOST_HASH_NO_EXTENSIONS is not defined.
-
- // BOOST_HASH_SPECIALIZE - define a specialization for a type which is
- // passed by copy.
- //
- // BOOST_HASH_SPECIALIZE_REF - define a specialization for a type which is
- // passed by const reference.
- //
- // These are undefined later.
-
-#define BOOST_HASH_SPECIALIZE(type) \
- template <> struct hash<type> \
- : public boost::hash_detail::hash_base<type> \
- { \
- std::size_t operator()(type v) const \
- { \
- return boost::hash_value(v); \
- } \
- };
-
-#define BOOST_HASH_SPECIALIZE_REF(type) \
- template <> struct hash<type> \
- : public boost::hash_detail::hash_base<type> \
- { \
- std::size_t operator()(type const& v) const \
- { \
- return boost::hash_value(v); \
- } \
- };
-
- BOOST_HASH_SPECIALIZE(bool)
- BOOST_HASH_SPECIALIZE(char)
- BOOST_HASH_SPECIALIZE(signed char)
- BOOST_HASH_SPECIALIZE(unsigned char)
-#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
- BOOST_HASH_SPECIALIZE(wchar_t)
-#endif
-#if !defined(BOOST_NO_CXX11_CHAR16_T)
- BOOST_HASH_SPECIALIZE(char16_t)
-#endif
-#if !defined(BOOST_NO_CXX11_CHAR32_T)
- BOOST_HASH_SPECIALIZE(char32_t)
-#endif
- BOOST_HASH_SPECIALIZE(short)
- BOOST_HASH_SPECIALIZE(unsigned short)
- BOOST_HASH_SPECIALIZE(int)
- BOOST_HASH_SPECIALIZE(unsigned int)
- BOOST_HASH_SPECIALIZE(long)
- BOOST_HASH_SPECIALIZE(unsigned long)
-
- BOOST_HASH_SPECIALIZE(float)
- BOOST_HASH_SPECIALIZE(double)
- BOOST_HASH_SPECIALIZE(long double)
-
- BOOST_HASH_SPECIALIZE_REF(std::string)
-#if !defined(BOOST_NO_STD_WSTRING) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
- BOOST_HASH_SPECIALIZE_REF(std::wstring)
-#endif
-#if !defined(BOOST_NO_CXX11_CHAR16_T)
- BOOST_HASH_SPECIALIZE_REF(std::basic_string<char16_t>)
-#endif
-#if !defined(BOOST_NO_CXX11_CHAR32_T)
- BOOST_HASH_SPECIALIZE_REF(std::basic_string<char32_t>)
-#endif
-
-#if !defined(BOOST_NO_LONG_LONG)
- BOOST_HASH_SPECIALIZE(boost::long_long_type)
- BOOST_HASH_SPECIALIZE(boost::ulong_long_type)
-#endif
-
-#if defined(BOOST_HAS_INT128)
- BOOST_HASH_SPECIALIZE(boost::int128_type)
- BOOST_HASH_SPECIALIZE(boost::uint128_type)
-#endif
-
-#if !defined(BOOST_NO_CXX11_HDR_TYPEINDEX)
- BOOST_HASH_SPECIALIZE(std::type_index)
-#endif
-
-#undef BOOST_HASH_SPECIALIZE
-#undef BOOST_HASH_SPECIALIZE_REF
-
-// Specializing boost::hash for pointers.
-
-#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
-
- template <class T>
- struct hash<T*>
- : public boost::hash_detail::hash_base<T*>
- {
- std::size_t operator()(T* v) const
- {
-#if !BOOST_WORKAROUND(__SUNPRO_CC, <= 0x590)
- return boost::hash_value(v);
-#else
- std::size_t x = static_cast<std::size_t>(
- reinterpret_cast<std::ptrdiff_t>(v));
-
- return x + (x >> 3);
-#endif
- }
- };
-
-#else
-
- // For compilers without partial specialization, we define a
- // boost::hash for all remaining types. But hash_impl is only defined
- // for pointers in 'extensions.hpp' - so when BOOST_HASH_NO_EXTENSIONS
- // is defined there will still be a compile error for types not supported
- // in the standard.
-
- namespace hash_detail
- {
- template <bool IsPointer>
- struct hash_impl;
-
- template <>
- struct hash_impl<true>
- {
- template <class T>
- struct inner
- : public boost::hash_detail::hash_base<T>
- {
- std::size_t operator()(T val) const
- {
-#if !BOOST_WORKAROUND(__SUNPRO_CC, <= 590)
- return boost::hash_value(val);
-#else
- std::size_t x = static_cast<std::size_t>(
- reinterpret_cast<std::ptrdiff_t>(val));
-
- return x + (x >> 3);
-#endif
- }
- };
- };
- }
-
- template <class T> struct hash
- : public boost::hash_detail::hash_impl<boost::is_pointer<T>::value>
- ::BOOST_NESTED_TEMPLATE inner<T>
- {
- };
-
-#endif
-}
-
-#undef BOOST_HASH_CHAR_TRAITS
-#undef BOOST_FUNCTIONAL_HASH_ROTL32
-
-#if defined(BOOST_MSVC)
-#pragma warning(pop)
-#endif
-
-#endif // BOOST_FUNCTIONAL_HASH_HASH_HPP
-
-// Include this outside of the include guards in case the file is included
-// twice - once with BOOST_HASH_NO_EXTENSIONS defined, and then with it
-// undefined.
-
-#if !defined(BOOST_HASH_NO_EXTENSIONS) \
- && !defined(BOOST_FUNCTIONAL_HASH_EXTENSIONS_HPP)
-#include <boost/functional/hash/extensions.hpp>
-#endif
+#include <boost/container_hash/hash.hpp>
projects / ceph.git / blobdiff