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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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1 files changed, 427 insertions, 0 deletions

diff --git a/libstdc++-v3/include/ext/functional b/libstdc++-v3/include/ext/functional
new file mode 100644
index 000000000..7e8acdfb4
--- /dev/null
+++ b/libstdc++-v3/include/ext/functional
@@ -0,0 +1,427 @@
+// Functional extensions -*- C++ -*-
+
+// Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010
+// 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/>.
+
+/*
+ *
+ * Copyright (c) 1994
+ * Hewlett-Packard Company
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.  Hewlett-Packard Company makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ *
+ * Copyright (c) 1996
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.  Silicon Graphics makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ */
+
+/** @file ext/functional
+ *  This file is a GNU extension to the Standard C++ Library (possibly
+ *  containing extensions from the HP/SGI STL subset).
+ */
+
+#ifndef _EXT_FUNCTIONAL
+#define _EXT_FUNCTIONAL 1
+
+#pragma GCC system_header
+
+#include <functional>
+
+namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  using std::size_t;
+  using std::unary_function;
+  using std::binary_function;
+  using std::mem_fun1_t;
+  using std::const_mem_fun1_t;
+  using std::mem_fun1_ref_t;
+  using std::const_mem_fun1_ref_t;
+
+  /** The @c identity_element functions are not part of the C++
+   *  standard; SGI provided them as an extension.  Its argument is an
+   *  operation, and its return value is the identity element for that
+   *  operation.  It is overloaded for addition and multiplication,
+   *  and you can overload it for your own nefarious operations.
+   *
+   *  @addtogroup SGIextensions
+   *  @{
+   */
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Tp>
+    inline _Tp
+    identity_element(std::plus<_Tp>)
+    { return _Tp(0); }
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Tp>
+    inline _Tp
+    identity_element(std::multiplies<_Tp>)
+    { return _Tp(1); }
+  /** @}  */
+  
+  /** As an extension to the binders, SGI provided composition functors and
+   *  wrapper functions to aid in their creation.  The @c unary_compose
+   *  functor is constructed from two functions/functors, @c f and @c g.
+   *  Calling @c operator() with a single argument @c x returns @c f(g(x)).
+   *  The function @c compose1 takes the two functions and constructs a
+   *  @c unary_compose variable for you.
+   *
+   *  @c binary_compose is constructed from three functors, @c f, @c g1,
+   *  and @c g2.  Its @c operator() returns @c f(g1(x),g2(x)).  The function
+   *  @compose2 takes f, g1, and g2, and constructs the @c binary_compose
+   *  instance for you.  For example, if @c f returns an int, then
+   *  \code
+   *  int answer = (compose2(f,g1,g2))(x);
+   *  \endcode
+   *  is equivalent to
+   *  \code
+   *  int temp1 = g1(x);
+   *  int temp2 = g2(x);
+   *  int answer = f(temp1,temp2);
+   *  \endcode
+   *  But the first form is more compact, and can be passed around as a
+   *  functor to other algorithms.
+   *
+   *  @addtogroup SGIextensions
+   *  @{
+   */
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Operation1, class _Operation2>
+    class unary_compose
+    : public unary_function<typename _Operation2::argument_type,
+			    typename _Operation1::result_type>
+    {
+    protected:
+      _Operation1 _M_fn1;
+      _Operation2 _M_fn2;
+
+    public:
+      unary_compose(const _Operation1& __x, const _Operation2& __y)
+      : _M_fn1(__x), _M_fn2(__y) {}
+
+      typename _Operation1::result_type
+      operator()(const typename _Operation2::argument_type& __x) const
+      { return _M_fn1(_M_fn2(__x)); }
+    };
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Operation1, class _Operation2>
+    inline unary_compose<_Operation1, _Operation2>
+    compose1(const _Operation1& __fn1, const _Operation2& __fn2)
+    { return unary_compose<_Operation1,_Operation2>(__fn1, __fn2); }
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Operation1, class _Operation2, class _Operation3>
+    class binary_compose
+    : public unary_function<typename _Operation2::argument_type,
+			    typename _Operation1::result_type>
+    {
+    protected:
+      _Operation1 _M_fn1;
+      _Operation2 _M_fn2;
+      _Operation3 _M_fn3;
+      
+    public:
+      binary_compose(const _Operation1& __x, const _Operation2& __y,
+		     const _Operation3& __z)
+      : _M_fn1(__x), _M_fn2(__y), _M_fn3(__z) { }
+
+      typename _Operation1::result_type
+      operator()(const typename _Operation2::argument_type& __x) const
+      { return _M_fn1(_M_fn2(__x), _M_fn3(__x)); }
+    };
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Operation1, class _Operation2, class _Operation3>
+    inline binary_compose<_Operation1, _Operation2, _Operation3>
+    compose2(const _Operation1& __fn1, const _Operation2& __fn2,
+	     const _Operation3& __fn3)
+    { return binary_compose<_Operation1, _Operation2, _Operation3>
+	(__fn1, __fn2, __fn3); }
+  /** @}  */
+
+  /** As an extension, SGI provided a functor called @c identity.  When a
+   *  functor is required but no operations are desired, this can be used as a
+   *  pass-through.  Its @c operator() returns its argument unchanged.
+   *
+   *  @addtogroup SGIextensions
+   */
+  template <class _Tp>
+    struct identity : public std::_Identity<_Tp> {};
+
+  /** @c select1st and @c select2nd are extensions provided by SGI.  Their
+   *  @c operator()s
+   *  take a @c std::pair as an argument, and return either the first member
+   *  or the second member, respectively.  They can be used (especially with
+   *  the composition functors) to @a strip data from a sequence before
+   *  performing the remainder of an algorithm.
+   *
+   *  @addtogroup SGIextensions
+   *  @{
+   */
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Pair>
+    struct select1st : public std::_Select1st<_Pair> {};
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Pair>
+    struct select2nd : public std::_Select2nd<_Pair> {};
+  /** @}  */
+
+  // extension documented next
+  template <class _Arg1, class _Arg2>
+    struct _Project1st : public binary_function<_Arg1, _Arg2, _Arg1>
+    {
+      _Arg1
+      operator()(const _Arg1& __x, const _Arg2&) const
+      { return __x; }
+    };
+
+  template <class _Arg1, class _Arg2>
+    struct _Project2nd : public binary_function<_Arg1, _Arg2, _Arg2>
+    {
+      _Arg2
+      operator()(const _Arg1&, const _Arg2& __y) const
+      { return __y; }
+    };
+
+  /** The @c operator() of the @c project1st functor takes two arbitrary
+   *  arguments and returns the first one, while @c project2nd returns the
+   *  second one.  They are extensions provided by SGI.
+   *
+   *  @addtogroup SGIextensions
+   *  @{
+   */
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Arg1, class _Arg2>
+    struct project1st : public _Project1st<_Arg1, _Arg2> {};
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Arg1, class _Arg2>
+    struct project2nd : public _Project2nd<_Arg1, _Arg2> {};
+  /** @}  */
+
+  // extension documented next
+  template <class _Result>
+    struct _Constant_void_fun
+    {
+      typedef _Result result_type;
+      result_type _M_val;
+
+      _Constant_void_fun(const result_type& __v) : _M_val(__v) {}
+
+      const result_type&
+      operator()() const
+      { return _M_val; }
+    };
+
+  template <class _Result, class _Argument>
+    struct _Constant_unary_fun
+    {
+      typedef _Argument argument_type;
+      typedef  _Result  result_type;
+      result_type _M_val;
+      
+      _Constant_unary_fun(const result_type& __v) : _M_val(__v) {}
+
+      const result_type&
+      operator()(const _Argument&) const
+      { return _M_val; }
+    };
+
+  template <class _Result, class _Arg1, class _Arg2>
+    struct _Constant_binary_fun
+    {
+      typedef  _Arg1   first_argument_type;
+      typedef  _Arg2   second_argument_type;
+      typedef  _Result result_type;
+      _Result _M_val;
+
+      _Constant_binary_fun(const _Result& __v) : _M_val(__v) {}
+      
+      const result_type&
+      operator()(const _Arg1&, const _Arg2&) const
+      { return _M_val; }
+    };
+
+  /** These three functors are each constructed from a single arbitrary
+   *  variable/value.  Later, their @c operator()s completely ignore any
+   *  arguments passed, and return the stored value.
+   *  - @c constant_void_fun's @c operator() takes no arguments
+   *  - @c constant_unary_fun's @c operator() takes one argument (ignored)
+   *  - @c constant_binary_fun's @c operator() takes two arguments (ignored)
+   *
+   *  The helper creator functions @c constant0, @c constant1, and
+   *  @c constant2 each take a @a result argument and construct variables of
+   *  the appropriate functor type.
+   *
+   *  @addtogroup SGIextensions
+   *  @{
+   */
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Result>
+    struct constant_void_fun
+    : public _Constant_void_fun<_Result>
+    {
+      constant_void_fun(const _Result& __v)
+      : _Constant_void_fun<_Result>(__v) {}
+    };
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Result, class _Argument = _Result>
+    struct constant_unary_fun : public _Constant_unary_fun<_Result, _Argument>
+    {
+      constant_unary_fun(const _Result& __v)
+      : _Constant_unary_fun<_Result, _Argument>(__v) {}
+    };
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Result, class _Arg1 = _Result, class _Arg2 = _Arg1>
+    struct constant_binary_fun
+    : public _Constant_binary_fun<_Result, _Arg1, _Arg2>
+    {
+      constant_binary_fun(const _Result& __v)
+      : _Constant_binary_fun<_Result, _Arg1, _Arg2>(__v) {}
+    };
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Result>
+    inline constant_void_fun<_Result>
+    constant0(const _Result& __val)
+    { return constant_void_fun<_Result>(__val); }
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Result>
+    inline constant_unary_fun<_Result, _Result>
+    constant1(const _Result& __val)
+    { return constant_unary_fun<_Result, _Result>(__val); }
+
+  /// An \link SGIextensions SGI extension \endlink.
+  template <class _Result>
+    inline constant_binary_fun<_Result,_Result,_Result>
+    constant2(const _Result& __val)
+    { return constant_binary_fun<_Result, _Result, _Result>(__val); }
+  /** @}  */
+
+  /** The @c subtractive_rng class is documented on
+   *  <a href="http://www.sgi.com/tech/stl/">SGI's site</a>.
+   *  Note that this code assumes that @c int is 32 bits.
+   *
+   *  @ingroup SGIextensions
+   */
+  class subtractive_rng
+  : public unary_function<unsigned int, unsigned int>
+  {
+  private:
+    unsigned int _M_table[55];
+    size_t _M_index1;
+    size_t _M_index2;
+
+  public:
+    /// Returns a number less than the argument.
+    unsigned int
+    operator()(unsigned int __limit)
+    {
+      _M_index1 = (_M_index1 + 1) % 55;
+      _M_index2 = (_M_index2 + 1) % 55;
+      _M_table[_M_index1] = _M_table[_M_index1] - _M_table[_M_index2];
+      return _M_table[_M_index1] % __limit;
+    }
+
+    void
+    _M_initialize(unsigned int __seed)
+    {
+      unsigned int __k = 1;
+      _M_table[54] = __seed;
+      size_t __i;
+      for (__i = 0; __i < 54; __i++)
+	{
+	  size_t __ii = (21 * (__i + 1) % 55) - 1;
+	  _M_table[__ii] = __k;
+	  __k = __seed - __k;
+	  __seed = _M_table[__ii];
+	}
+      for (int __loop = 0; __loop < 4; __loop++)
+	{
+	  for (__i = 0; __i < 55; __i++)
+            _M_table[__i] = _M_table[__i] - _M_table[(1 + __i + 30) % 55];
+	}
+      _M_index1 = 0;
+      _M_index2 = 31;
+    }
+
+    /// Ctor allowing you to initialize the seed.
+    subtractive_rng(unsigned int __seed)
+    { _M_initialize(__seed); }
+
+    /// Default ctor; initializes its state with some number you don't see.
+    subtractive_rng()
+    { _M_initialize(161803398u); }
+  };
+
+  // Mem_fun adaptor helper functions mem_fun1 and mem_fun1_ref,
+  // provided for backward compatibility, they are no longer part of
+  // the C++ standard.
+  
+  template <class _Ret, class _Tp, class _Arg>
+    inline mem_fun1_t<_Ret, _Tp, _Arg>
+    mem_fun1(_Ret (_Tp::*__f)(_Arg))
+    { return mem_fun1_t<_Ret, _Tp, _Arg>(__f); }
+
+  template <class _Ret, class _Tp, class _Arg>
+    inline const_mem_fun1_t<_Ret, _Tp, _Arg>
+    mem_fun1(_Ret (_Tp::*__f)(_Arg) const)
+    { return const_mem_fun1_t<_Ret, _Tp, _Arg>(__f); }
+
+  template <class _Ret, class _Tp, class _Arg>
+    inline mem_fun1_ref_t<_Ret, _Tp, _Arg>
+    mem_fun1_ref(_Ret (_Tp::*__f)(_Arg))
+    { return mem_fun1_ref_t<_Ret, _Tp, _Arg>(__f); }
+
+  template <class _Ret, class _Tp, class _Arg>
+    inline const_mem_fun1_ref_t<_Ret, _Tp, _Arg>
+    mem_fun1_ref(_Ret (_Tp::*__f)(_Arg) const)
+    { return const_mem_fun1_ref_t<_Ret, _Tp, _Arg>(__f); }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+#endif
+