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Name	Size	Permission
algorithmfwd.h	23.97 KB	-rw-r--r--
align.h	3.62 KB	-rw-r--r--
alloc_traits.h	27.03 KB	-rw-r--r--
allocated_ptr.h	3.25 KB	-rw-r--r--
allocator.h	9.55 KB	-rw-r--r--
atomic_base.h	56.73 KB	-rw-r--r--
atomic_futex.h	12.08 KB	-rw-r--r--
atomic_lockfree_defines.h	2.3 KB	-rw-r--r--
atomic_timed_wait.h	13.18 KB	-rw-r--r--
atomic_wait.h	12.2 KB	-rw-r--r--
basic_ios.h	15.7 KB	-rw-r--r--
basic_ios.tcc	5.96 KB	-rw-r--r--
basic_string.h	149.19 KB	-rw-r--r--
basic_string.tcc	33.76 KB	-rw-r--r--
boost_concept_check.h	29.13 KB	-rw-r--r--
c++0x_warning.h	1.44 KB	-rw-r--r--
char_traits.h	28.54 KB	-rw-r--r--
charconv.h	3.35 KB	-rw-r--r--
chrono.h	41.53 KB	-rw-r--r--
codecvt.h	24.9 KB	-rw-r--r--
concept_check.h	3.34 KB	-rw-r--r--
cow_string.h	129.11 KB	-rw-r--r--
cpp_type_traits.h	13.72 KB	-rw-r--r--
cxxabi_forced.h	1.77 KB	-rw-r--r--
cxxabi_init_exception.h	2.17 KB	-rw-r--r--
deque.tcc	41.38 KB	-rw-r--r--
enable_special_members.h	12.16 KB	-rw-r--r--
erase_if.h	2.09 KB	-rw-r--r--
exception.h	2.45 KB	-rw-r--r--
exception_defines.h	1.61 KB	-rw-r--r--
exception_ptr.h	7.73 KB	-rw-r--r--
forward_list.h	49.87 KB	-rw-r--r--
forward_list.tcc	13.71 KB	-rw-r--r--
fs_dir.h	16.23 KB	-rw-r--r--
fs_fwd.h	10.66 KB	-rw-r--r--
fs_ops.h	10.49 KB	-rw-r--r--
fs_path.h	40.57 KB	-rw-r--r--
fstream.tcc	32.88 KB	-rw-r--r--
functexcept.h	3.43 KB	-rw-r--r--
functional_hash.h	8.51 KB	-rw-r--r--
gslice.h	5.39 KB	-rw-r--r--
gslice_array.h	7.67 KB	-rw-r--r--
hash_bytes.h	2.1 KB	-rw-r--r--
hashtable.h	87.83 KB	-rw-r--r--
hashtable_policy.h	63.21 KB	-rw-r--r--
indirect_array.h	7.68 KB	-rw-r--r--
invoke.h	5.92 KB	-rw-r--r--
ios_base.h	31.43 KB	-rw-r--r--
istream.tcc	31.38 KB	-rw-r--r--
iterator_concepts.h	32.61 KB	-rw-r--r--
list.tcc	17.62 KB	-rw-r--r--
locale_classes.h	24.46 KB	-rw-r--r--
locale_classes.tcc	8.18 KB	-rw-r--r--
locale_conv.h	18.74 KB	-rw-r--r--
locale_facets.h	91.72 KB	-rw-r--r--
locale_facets.tcc	39.51 KB	-rw-r--r--
locale_facets_nonio.h	69.1 KB	-rw-r--r--
locale_facets_nonio.tcc	53.76 KB	-rw-r--r--
localefwd.h	5.8 KB	-rw-r--r--
mask_array.h	7.5 KB	-rw-r--r--
max_size_type.h	21.96 KB	-rw-r--r--
memoryfwd.h	2.45 KB	-rw-r--r--
mofunc_impl.h	7.52 KB	-rw-r--r--
move.h	6.63 KB	-rw-r--r--
move_only_function.h	5.73 KB	-rw-r--r--
nested_exception.h	4.77 KB	-rw-r--r--
new_allocator.h	6.47 KB	-rw-r--r--
node_handle.h	10.67 KB	-rw-r--r--
ostream.tcc	11.69 KB	-rw-r--r--
ostream_insert.h	3.94 KB	-rw-r--r--
parse_numbers.h	7.8 KB	-rw-r--r--
postypes.h	7.33 KB	-rw-r--r--
predefined_ops.h	9.94 KB	-rw-r--r--
ptr_traits.h	8.88 KB	-rw-r--r--
quoted_string.h	4.93 KB	-rw-r--r--
random.h	174.24 KB	-rw-r--r--
random.tcc	103.38 KB	-rw-r--r--
range_access.h	10.97 KB	-rw-r--r--
ranges_algo.h	114.1 KB	-rw-r--r--
ranges_algobase.h	18.4 KB	-rw-r--r--
ranges_base.h	25.61 KB	-rw-r--r--
ranges_cmp.h	5.83 KB	-rw-r--r--
ranges_uninitialized.h	17.71 KB	-rw-r--r--
ranges_util.h	21.3 KB	-rw-r--r--
refwrap.h	13.21 KB	-rw-r--r--
regex.h	101.77 KB	-rw-r--r--
regex.tcc	16.13 KB	-rw-r--r--
regex_automaton.h	10.54 KB	-rw-r--r--
regex_automaton.tcc	7.58 KB	-rw-r--r--
regex_compiler.h	15.92 KB	-rw-r--r--
regex_compiler.tcc	18.38 KB	-rw-r--r--
regex_constants.h	14.51 KB	-rw-r--r--
regex_error.h	5.03 KB	-rw-r--r--
regex_executor.h	8.8 KB	-rw-r--r--
regex_executor.tcc	18.41 KB	-rw-r--r--
regex_scanner.h	6.88 KB	-rw-r--r--
regex_scanner.tcc	14.54 KB	-rw-r--r--
semaphore_base.h	7.7 KB	-rw-r--r--
shared_ptr.h	38.14 KB	-rw-r--r--
shared_ptr_atomic.h	20.7 KB	-rw-r--r--
shared_ptr_base.h	65.23 KB	-rw-r--r--
slice_array.h	9.35 KB	-rw-r--r--
specfun.h	46.13 KB	-rw-r--r--
sstream.tcc	9.91 KB	-rw-r--r--
std_abs.h	3.37 KB	-rw-r--r--
std_function.h	22.34 KB	-rw-r--r--
std_mutex.h	6.27 KB	-rw-r--r--
std_thread.h	8.24 KB	-rw-r--r--
stl_algo.h	210.67 KB	-rw-r--r--
stl_algobase.h	75.01 KB	-rw-r--r--
stl_bvector.h	40.27 KB	-rw-r--r--
stl_construct.h	8.46 KB	-rw-r--r--
stl_deque.h	76.34 KB	-rw-r--r--
stl_function.h	43.97 KB	-rw-r--r--
stl_heap.h	20.31 KB	-rw-r--r--
stl_iterator.h	79.65 KB	-rw-r--r--
stl_iterator_base_funcs.h	8.57 KB	-rw-r--r--
stl_iterator_base_types.h	9.46 KB	-rw-r--r--
stl_list.h	70.68 KB	-rw-r--r--
stl_map.h	54.8 KB	-rw-r--r--
stl_multimap.h	42.67 KB	-rw-r--r--
stl_multiset.h	36.84 KB	-rw-r--r--
stl_numeric.h	14.26 KB	-rw-r--r--
stl_pair.h	29.41 KB	-rw-r--r--
stl_queue.h	28.06 KB	-rw-r--r--
stl_raw_storage_iter.h	3.91 KB	-rw-r--r--
stl_relops.h	4.47 KB	-rw-r--r--
stl_set.h	37.09 KB	-rw-r--r--
stl_stack.h	13.71 KB	-rw-r--r--
stl_tempbuf.h	8.48 KB	-rw-r--r--
stl_tree.h	72.04 KB	-rw-r--r--
stl_uninitialized.h	35.32 KB	-rw-r--r--
stl_vector.h	68.73 KB	-rw-r--r--
stream_iterator.h	8.09 KB	-rw-r--r--
streambuf.tcc	4.58 KB	-rw-r--r--
streambuf_iterator.h	15.53 KB	-rw-r--r--
string_view.tcc	7 KB	-rw-r--r--
stringfwd.h	2.56 KB	-rw-r--r--
this_thread_sleep.h	3.21 KB	-rw-r--r--
uniform_int_dist.h	12.77 KB	-rw-r--r--
unique_lock.h	6.01 KB	-rw-r--r--
unique_ptr.h	35.54 KB	-rw-r--r--
unordered_map.h	74.87 KB	-rw-r--r--
unordered_set.h	61.46 KB	-rw-r--r--
uses_allocator.h	6.74 KB	-rw-r--r--
uses_allocator_args.h	6.96 KB	-rw-r--r--
utility.h	8.12 KB	-rw-r--r--
valarray_after.h	22.74 KB	-rw-r--r--
valarray_array.h	20.8 KB	-rw-r--r--
valarray_array.tcc	7.08 KB	-rw-r--r--
valarray_before.h	18.69 KB	-rw-r--r--
vector.tcc	30.82 KB	-rw-r--r--

Code Editor : utility.h

// Utilities used throughout the library -*- C++ -*-

// Copyright (C) 2004-2022 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 include/bits/utility.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{utility}
 *
 *  This file contains the parts of `<utility>` needed by other headers,
 *  so they don't need to include the whole of `<utility>`.
 */

#ifndef _GLIBCXX_UTILITY_H
#define _GLIBCXX_UTILITY_H 1

#pragma GCC system_header

#if __cplusplus >= 201103L

#include <type_traits>
#include <bits/move.h>

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

/// Finds the size of a given tuple type.
  template<typename _Tp>
    struct tuple_size;

// _GLIBCXX_RESOLVE_LIB_DEFECTS
  // 2313. tuple_size should always derive from integral_constant<size_t, N>
  // 2770. tuple_size<const T> specialization is not SFINAE compatible

template<typename _Tp,
	   typename _Up = typename remove_cv<_Tp>::type,
	   typename = typename enable_if<is_same<_Tp, _Up>::value>::type,
	   size_t = tuple_size<_Tp>::value>
    using __enable_if_has_tuple_size = _Tp;

template<typename _Tp>
    struct tuple_size<const __enable_if_has_tuple_size<_Tp>>
    : public tuple_size<_Tp> { };

template<typename _Tp>
    struct tuple_size<volatile __enable_if_has_tuple_size<_Tp>>
    : public tuple_size<_Tp> { };

template<typename _Tp>
    struct tuple_size<const volatile __enable_if_has_tuple_size<_Tp>>
    : public tuple_size<_Tp> { };

#if __cplusplus >= 201703L
  template<typename _Tp>
    inline constexpr size_t tuple_size_v = tuple_size<_Tp>::value;
#endif

/// Gives the type of the ith element of a given tuple type.
  template<size_t __i, typename _Tp>
    struct tuple_element;

// Duplicate of C++14's tuple_element_t for internal use in C++11 mode
  template<size_t __i, typename _Tp>
    using __tuple_element_t = typename tuple_element<__i, _Tp>::type;

template<size_t __i, typename _Tp>
    struct tuple_element<__i, const _Tp>
    {
      typedef typename add_const<__tuple_element_t<__i, _Tp>>::type type;
    };

template<size_t __i, typename _Tp>
    struct tuple_element<__i, volatile _Tp>
    {
      typedef typename add_volatile<__tuple_element_t<__i, _Tp>>::type type;
    };

template<size_t __i, typename _Tp>
    struct tuple_element<__i, const volatile _Tp>
    {
      typedef typename add_cv<__tuple_element_t<__i, _Tp>>::type type;
    };

#if __cplusplus >= 201402L

// Return the index of _Tp in _Types, if it occurs exactly once.
  // Otherwise, return sizeof...(_Types).
  template<typename _Tp, typename... _Types>
    constexpr size_t
    __find_uniq_type_in_pack()
    {
      constexpr size_t __sz = sizeof...(_Types);
      constexpr bool __found[__sz] = { __is_same(_Tp, _Types) ... };
      size_t __n = __sz;
      for (size_t __i = 0; __i < __sz; ++__i)
	{
	  if (__found[__i])
	    {
	      if (__n < __sz) // more than one _Tp found
		return __sz;
	      __n = __i;
	    }
	}
      return __n;
    }

// The standard says this macro and alias template should be in <tuple> but we
// define them here, to be available in <array>, <utility> and <ranges> too.
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 3378. tuple_size_v/tuple_element_t should be available when
//       tuple_size/tuple_element are
#define __cpp_lib_tuple_element_t 201402L

template<size_t __i, typename _Tp>
    using tuple_element_t = typename tuple_element<__i, _Tp>::type;
#endif // C++14

// Stores a tuple of indices.  Used by tuple and pair, and by bind() to
  // extract the elements in a tuple.
  template<size_t... _Indexes> struct _Index_tuple { };

// Builds an _Index_tuple<0, 1, 2, ..., _Num-1>.
  template<size_t _Num>
    struct _Build_index_tuple
    {
#if __has_builtin(__make_integer_seq)
      template<typename, size_t... _Indices>
	using _IdxTuple = _Index_tuple<_Indices...>;

// Clang defines __make_integer_seq for this purpose.
      using __type = __make_integer_seq<_IdxTuple, size_t, _Num>;
#else
      // For GCC and other compilers, use __integer_pack instead.
      using __type = _Index_tuple<__integer_pack(_Num)...>;
#endif
    };

#if __cplusplus >= 201402L

#define __cpp_lib_integer_sequence 201304L

/// Class template integer_sequence
  template<typename _Tp, _Tp... _Idx>
    struct integer_sequence
    {
      typedef _Tp value_type;
      static constexpr size_t size() noexcept { return sizeof...(_Idx); }
    };

/// Alias template make_integer_sequence
  template<typename _Tp, _Tp _Num>
    using make_integer_sequence
#if __has_builtin(__make_integer_seq)
      = __make_integer_seq<integer_sequence, _Tp, _Num>;
#else
      = integer_sequence<_Tp, __integer_pack(_Num)...>;
#endif

/// Alias template index_sequence
  template<size_t... _Idx>
    using index_sequence = integer_sequence<size_t, _Idx...>;

/// Alias template make_index_sequence
  template<size_t _Num>
    using make_index_sequence = make_integer_sequence<size_t, _Num>;

/// Alias template index_sequence_for
  template<typename... _Types>
    using index_sequence_for = make_index_sequence<sizeof...(_Types)>;

#if __cplusplus >= 201703L

struct in_place_t {
    explicit in_place_t() = default;
  };

inline constexpr in_place_t in_place{};

template<typename _Tp> struct in_place_type_t
  {
    explicit in_place_type_t() = default;
  };

template<typename _Tp>
    inline constexpr in_place_type_t<_Tp> in_place_type{};

template<size_t _Idx> struct in_place_index_t
  {
    explicit in_place_index_t() = default;
  };

template<size_t _Idx>
    inline constexpr in_place_index_t<_Idx> in_place_index{};

template<typename>
    inline constexpr bool __is_in_place_type_v = false;

template<typename _Tp>
    inline constexpr bool __is_in_place_type_v<in_place_type_t<_Tp>> = true;

template<typename _Tp>
    using __is_in_place_type = bool_constant<__is_in_place_type_v<_Tp>>;

#endif // C++17
#endif // C++14

template<size_t _Np, typename... _Types>
    struct _Nth_type
    { };

template<typename _Tp0, typename... _Rest>
    struct _Nth_type<0, _Tp0, _Rest...>
    { using type = _Tp0; };

template<typename _Tp0, typename _Tp1, typename... _Rest>
    struct _Nth_type<1, _Tp0, _Tp1, _Rest...>
    { using type = _Tp1; };

template<typename _Tp0, typename _Tp1, typename _Tp2, typename... _Rest>
    struct _Nth_type<2, _Tp0, _Tp1, _Tp2, _Rest...>
    { using type = _Tp2; };

template<size_t _Np, typename _Tp0, typename _Tp1, typename _Tp2,
	   typename... _Rest>
#if __cpp_concepts
    requires (_Np >= 3)
#endif
    struct _Nth_type<_Np, _Tp0, _Tp1, _Tp2, _Rest...>
    : _Nth_type<_Np - 3, _Rest...>
    { };

#if ! __cpp_concepts // Need additional specializations to avoid ambiguities.
  template<typename _Tp0, typename _Tp1, typename... _Rest>
    struct _Nth_type<0, _Tp0, _Tp1, _Rest...>
    { using type = _Tp0; };

template<typename _Tp0, typename _Tp1, typename _Tp2, typename... _Rest>
    struct _Nth_type<0, _Tp0, _Tp1, _Tp2, _Rest...>
    { using type = _Tp0; };

template<typename _Tp0, typename _Tp1, typename _Tp2, typename... _Rest>
    struct _Nth_type<1, _Tp0, _Tp1, _Tp2, _Rest...>
    { using type = _Tp1; };
#endif

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace

#endif // C++11
#endif /* _GLIBCXX_UTILITY_H */

${this.title}

Code Editor : utility.h