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verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
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if you have obtained the source via the command 'git clone',
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1 files changed, 191 insertions, 0 deletions

diff --git a/libstdc++-v3/include/bits/functional_hash.h b/libstdc++-v3/include/bits/functional_hash.h
new file mode 100644
index 000000000..e77cb4e17
--- /dev/null
+++ b/libstdc++-v3/include/bits/functional_hash.h
@@ -0,0 +1,191 @@
+// functional_hash.h header -*- C++ -*-
+
+// Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file bits/functional_hash.h
+ *  This is an internal header file, included by other library headers.
+ *  Do not attempt to use it directly. @headername{functional}
+ */
+
+#ifndef _FUNCTIONAL_HASH_H
+#define _FUNCTIONAL_HASH_H 1
+
+#pragma GCC system_header
+
+#include <bits/hash_bytes.h>
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  /** @defgroup hashes Hashes
+   *  @ingroup functors
+   *
+   *   Hashing functors taking a variable type and returning a @c std::size_t.
+   *
+   *  @{
+   */
+
+  template<typename _Result, typename _Arg>
+    struct __hash_base
+    {
+      typedef _Result     result_type;
+      typedef _Arg      argument_type;
+    };
+
+  /// Primary class template hash.
+  template<typename _Tp>
+    struct hash : public __hash_base<size_t, _Tp>
+    {
+      size_t
+      operator()(_Tp __val) const;
+    };
+
+  /// Partial specializations for pointer types.
+  template<typename _Tp>
+    struct hash<_Tp*> : public __hash_base<size_t, _Tp*>
+    {
+      size_t
+      operator()(_Tp* __p) const
+      { return reinterpret_cast<size_t>(__p); }
+    };
+
+  // Explicit specializations for integer types.
+#define _Cxx_hashtable_define_trivial_hash(_Tp) 	\
+  template<>						\
+    inline size_t					\
+    hash<_Tp>::operator()(_Tp __val) const		\
+    { return static_cast<size_t>(__val); }
+
+  /// Explicit specialization for bool.
+  _Cxx_hashtable_define_trivial_hash(bool);
+
+  /// Explicit specialization for char.
+  _Cxx_hashtable_define_trivial_hash(char);
+
+  /// Explicit specialization for signed char.
+  _Cxx_hashtable_define_trivial_hash(signed char);
+
+  /// Explicit specialization for unsigned char.
+  _Cxx_hashtable_define_trivial_hash(unsigned char);
+
+  /// Explicit specialization for wchar_t.
+  _Cxx_hashtable_define_trivial_hash(wchar_t);
+
+  /// Explicit specialization for char16_t.
+  _Cxx_hashtable_define_trivial_hash(char16_t);
+
+  /// Explicit specialization for char32_t.
+  _Cxx_hashtable_define_trivial_hash(char32_t);
+
+  /// Explicit specialization for short.
+  _Cxx_hashtable_define_trivial_hash(short);
+
+  /// Explicit specialization for int.
+  _Cxx_hashtable_define_trivial_hash(int);
+
+  /// Explicit specialization for long.
+  _Cxx_hashtable_define_trivial_hash(long);
+
+  /// Explicit specialization for long long.
+  _Cxx_hashtable_define_trivial_hash(long long);
+
+  /// Explicit specialization for unsigned short.
+  _Cxx_hashtable_define_trivial_hash(unsigned short);
+
+  /// Explicit specialization for unsigned int.
+  _Cxx_hashtable_define_trivial_hash(unsigned int);
+
+  /// Explicit specialization for unsigned long.
+  _Cxx_hashtable_define_trivial_hash(unsigned long);
+
+  /// Explicit specialization for unsigned long long.
+  _Cxx_hashtable_define_trivial_hash(unsigned long long);
+
+#undef _Cxx_hashtable_define_trivial_hash
+
+  struct _Hash_impl
+  {
+    static size_t
+    hash(const void* __ptr, size_t __clength,
+	 size_t __seed = static_cast<size_t>(0xc70f6907UL))
+    { return _Hash_bytes(__ptr, __clength, __seed); }
+
+    template<typename _Tp>
+      static size_t
+      hash(const _Tp& __val)
+      { return hash(&__val, sizeof(__val)); }
+
+    template<typename _Tp>
+      static size_t
+      __hash_combine(const _Tp& __val, size_t __hash)
+      { return hash(&__val, sizeof(__val), __hash); }
+  };
+
+  struct _Fnv_hash_impl
+  {
+    static size_t
+    hash(const void* __ptr, size_t __clength,
+	 size_t __seed = static_cast<size_t>(2166136261UL))
+    { return _Fnv_hash_bytes(__ptr, __clength, __seed); }
+
+    template<typename _Tp>
+      static size_t
+      hash(const _Tp& __val)
+      { return hash(&__val, sizeof(__val)); }
+
+    template<typename _Tp>
+      static size_t
+      __hash_combine(const _Tp& __val, size_t __hash)
+      { return hash(&__val, sizeof(__val), __hash); }
+  };
+
+  /// Specialization for float.
+  template<>
+    inline size_t
+    hash<float>::operator()(float __val) const
+    {
+      // 0 and -0 both hash to zero.
+      return __val != 0.0f ? std::_Hash_impl::hash(__val) : 0;
+    }
+
+  /// Specialization for double.
+  template<>
+    inline size_t
+    hash<double>::operator()(double __val) const
+    {
+      // 0 and -0 both hash to zero.
+      return __val != 0.0 ? std::_Hash_impl::hash(__val) : 0;
+    }
+
+  /// Specialization for long double.
+  template<>
+    _GLIBCXX_PURE size_t
+    hash<long double>::operator()(long double __val) const;
+
+  // @} group hashes
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+#endif // _FUNCTIONAL_HASH_H