Gecko [ v99win.today ]

Name	Size	Permission
algorithmfwd.h	23.97 KB	-rw-r--r--
align.h	3.62 KB	-rw-r--r--
alloc_traits.h	26.98 KB	-rw-r--r--
allocated_ptr.h	3.25 KB	-rw-r--r--
allocator.h	9.51 KB	-rw-r--r--
atomic_base.h	56.07 KB	-rw-r--r--
atomic_futex.h	12.1 KB	-rw-r--r--
atomic_lockfree_defines.h	2.3 KB	-rw-r--r--
atomic_timed_wait.h	13.21 KB	-rw-r--r--
atomic_wait.h	12.26 KB	-rw-r--r--
basic_ios.h	15.7 KB	-rw-r--r--
basic_ios.tcc	5.94 KB	-rw-r--r--
basic_string.h	246.04 KB	-rw-r--r--
basic_string.tcc	52.92 KB	-rw-r--r--
boost_concept_check.h	26.54 KB	-rw-r--r--
c++0x_warning.h	1.44 KB	-rw-r--r--
char_traits.h	28.66 KB	-rw-r--r--
charconv.h	3.35 KB	-rw-r--r--
codecvt.h	24.9 KB	-rw-r--r--
concept_check.h	3.34 KB	-rw-r--r--
cpp_type_traits.h	13.67 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	41.37 KB	-rw-r--r--
enable_special_members.h	12.16 KB	-rw-r--r--
erase_if.h	2.02 KB	-rw-r--r--
exception.h	2.45 KB	-rw-r--r--
exception_defines.h	1.61 KB	-rw-r--r--
exception_ptr.h	7.46 KB	-rw-r--r--
forward_list.h	49.21 KB	-rw-r--r--
forward_list.tcc	13.71 KB	-rw-r--r--
fs_dir.h	16.02 KB	-rw-r--r--
fs_fwd.h	10.52 KB	-rw-r--r--
fs_ops.h	10.49 KB	-rw-r--r--
fs_path.h	38.81 KB	-rw-r--r--
fstream.tcc	32.88 KB	-rw-r--r--
functexcept.h	3.43 KB	-rw-r--r--
functional_hash.h	8.39 KB	-rw-r--r--
gslice.h	5.39 KB	-rw-r--r--
gslice_array.h	7.71 KB	-rw-r--r--
hash_bytes.h	2.1 KB	-rw-r--r--
hashtable.h	82.96 KB	-rw-r--r--
hashtable_policy.h	60.7 KB	-rw-r--r--
indirect_array.h	7.72 KB	-rw-r--r--
invoke.h	5.92 KB	-rw-r--r--
ios_base.h	31.19 KB	-rw-r--r--
istream.tcc	30.85 KB	-rw-r--r--
iterator_concepts.h	32.55 KB	-rw-r--r--
list.tcc	16.8 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	18.38 KB	-rw-r--r--
locale_facets.h	91.46 KB	-rw-r--r--
locale_facets.tcc	39.51 KB	-rw-r--r--
locale_facets_nonio.h	68.07 KB	-rw-r--r--
locale_facets_nonio.tcc	46.42 KB	-rw-r--r--
localefwd.h	5.8 KB	-rw-r--r--
mask_array.h	7.54 KB	-rw-r--r--
max_size_type.h	22.18 KB	-rw-r--r--
memoryfwd.h	2.45 KB	-rw-r--r--
move.h	6.64 KB	-rw-r--r--
nested_exception.h	4.77 KB	-rw-r--r--
node_handle.h	10.66 KB	-rw-r--r--
ostream.tcc	12.03 KB	-rw-r--r--
ostream_insert.h	3.94 KB	-rw-r--r--
parse_numbers.h	7.79 KB	-rw-r--r--
postypes.h	8.27 KB	-rw-r--r--
predefined_ops.h	9.94 KB	-rw-r--r--
ptr_traits.h	6.55 KB	-rw-r--r--
quoted_string.h	4.93 KB	-rw-r--r--
random.h	174.18 KB	-rw-r--r--
random.tcc	103.21 KB	-rw-r--r--
range_access.h	10.46 KB	-rw-r--r--
ranges_algo.h	114.09 KB	-rw-r--r--
ranges_algobase.h	18.43 KB	-rw-r--r--
ranges_base.h	23.82 KB	-rw-r--r--
ranges_cmp.h	5.88 KB	-rw-r--r--
ranges_uninitialized.h	17.71 KB	-rw-r--r--
ranges_util.h	20.11 KB	-rw-r--r--
refwrap.h	12.9 KB	-rw-r--r--
regex.h	101.53 KB	-rw-r--r--
regex.tcc	16.11 KB	-rw-r--r--
regex_automaton.h	10.54 KB	-rw-r--r--
regex_automaton.tcc	7.54 KB	-rw-r--r--
regex_compiler.h	15.84 KB	-rw-r--r--
regex_compiler.tcc	18.71 KB	-rw-r--r--
regex_constants.h	15.18 KB	-rw-r--r--
regex_error.h	4.9 KB	-rw-r--r--
regex_executor.h	8.64 KB	-rw-r--r--
regex_executor.tcc	18.4 KB	-rw-r--r--
regex_scanner.h	6.88 KB	-rw-r--r--
regex_scanner.tcc	14.89 KB	-rw-r--r--
semaphore_base.h	7.75 KB	-rw-r--r--
shared_ptr.h	30.25 KB	-rw-r--r--
shared_ptr_atomic.h	9.64 KB	-rw-r--r--
shared_ptr_base.h	53.62 KB	-rw-r--r--
slice_array.h	9.39 KB	-rw-r--r--
specfun.h	46.13 KB	-rw-r--r--
sstream.tcc	9.91 KB	-rw-r--r--
std_abs.h	3.3 KB	-rw-r--r--
std_function.h	22.33 KB	-rw-r--r--
std_mutex.h	6.29 KB	-rw-r--r--
std_thread.h	8.39 KB	-rw-r--r--
stl_algo.h	209.67 KB	-rw-r--r--
stl_algobase.h	74.47 KB	-rw-r--r--
stl_bvector.h	34.74 KB	-rw-r--r--
stl_construct.h	8.59 KB	-rw-r--r--
stl_deque.h	75.17 KB	-rw-r--r--
stl_function.h	42.87 KB	-rw-r--r--
stl_heap.h	20.27 KB	-rw-r--r--
stl_iterator.h	77 KB	-rw-r--r--
stl_iterator_base_funcs.h	7.99 KB	-rw-r--r--
stl_iterator_base_types.h	9.44 KB	-rw-r--r--
stl_list.h	68.14 KB	-rw-r--r--
stl_map.h	53.41 KB	-rw-r--r--
stl_multimap.h	42.51 KB	-rw-r--r--
stl_multiset.h	36.79 KB	-rw-r--r--
stl_numeric.h	14.26 KB	-rw-r--r--
stl_pair.h	19.66 KB	-rw-r--r--
stl_queue.h	24.45 KB	-rw-r--r--
stl_raw_storage_iter.h	3.74 KB	-rw-r--r--
stl_relops.h	4.49 KB	-rw-r--r--
stl_set.h	37.05 KB	-rw-r--r--
stl_stack.h	12.39 KB	-rw-r--r--
stl_tempbuf.h	8.45 KB	-rw-r--r--
stl_tree.h	72.19 KB	-rw-r--r--
stl_uninitialized.h	33.22 KB	-rw-r--r--
stl_vector.h	64.37 KB	-rw-r--r--
stream_iterator.h	7.52 KB	-rw-r--r--
streambuf.tcc	4.81 KB	-rw-r--r--
streambuf_iterator.h	15.17 KB	-rw-r--r--
string_view.tcc	7 KB	-rw-r--r--
stringfwd.h	2.63 KB	-rw-r--r--
this_thread_sleep.h	3.23 KB	-rw-r--r--
uniform_int_dist.h	12.75 KB	-rw-r--r--
unique_lock.h	6 KB	-rw-r--r--
unique_ptr.h	31.77 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	7.38 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	30.26 KB	-rw-r--r--

Code Editor : cpp_type_traits.h

// The  -*- C++ -*- type traits classes for internal use in libstdc++

// Copyright (C) 2000-2021 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/cpp_type_traits.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{ext/type_traits}
 */

// Written by Gabriel Dos Reis <dosreis@cmla.ens-cachan.fr>

#ifndef _CPP_TYPE_TRAITS_H
#define _CPP_TYPE_TRAITS_H 1

#pragma GCC system_header

#include <bits/c++config.h>

//
// This file provides some compile-time information about various types.
// These representations were designed, on purpose, to be constant-expressions
// and not types as found in <bits/type_traits.h>.  In particular, they
// can be used in control structures and the optimizer hopefully will do
// the obvious thing.
//
// Why integral expressions, and not functions nor types?
// Firstly, these compile-time entities are used as template-arguments
// so function return values won't work:  We need compile-time entities.
// We're left with types and constant  integral expressions.
// Secondly, from the point of view of ease of use, type-based compile-time
// information is -not- *that* convenient.  One has to write lots of
// overloaded functions and to hope that the compiler will select the right
// one. As a net effect, the overall structure isn't very clear at first
// glance.
// Thirdly, partial ordering and overload resolution (of function templates)
// is highly costly in terms of compiler-resource.  It is a Good Thing to
// keep these resource consumption as least as possible.
//
// See valarray_array.h for a case use.
//
// -- Gaby (dosreis@cmla.ens-cachan.fr) 2000-03-06.
//
// Update 2005: types are also provided and <bits/type_traits.h> has been
// removed.
//

extern "C++" {

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

struct __true_type { };
  struct __false_type { };

template<bool>
    struct __truth_type
    { typedef __false_type __type; };

template<>
    struct __truth_type<true>
    { typedef __true_type __type; };

// N.B. The conversions to bool are needed due to the issue
  // explained in c++/19404.
  template<class _Sp, class _Tp>
    struct __traitor
    {
      enum { __value = bool(_Sp::__value) || bool(_Tp::__value) };
      typedef typename __truth_type<__value>::__type __type;
    };

// Compare for equality of types.
  template<typename, typename>
    struct __are_same
    {
      enum { __value = 0 };
      typedef __false_type __type;
    };

template<typename _Tp>
    struct __are_same<_Tp, _Tp>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

// Holds if the template-argument is a void type.
  template<typename _Tp>
    struct __is_void
    {
      enum { __value = 0 };
      typedef __false_type __type;
    };

template<>
    struct __is_void<void>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

//
  // Integer types
  //
  template<typename _Tp>
    struct __is_integer
    {
      enum { __value = 0 };
      typedef __false_type __type;
    };

// Thirteen specializations (yes there are eleven standard integer
  // types; <em>long long</em> and <em>unsigned long long</em> are
  // supported as extensions).  Up to four target-specific __int<N>
  // types are supported as well.
  template<>
    struct __is_integer<bool>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<char>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<signed char>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<unsigned char>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

# ifdef __WCHAR_TYPE__
  template<>
    struct __is_integer<wchar_t>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };
# endif

#ifdef _GLIBCXX_USE_CHAR8_T
  template<>
    struct __is_integer<char8_t>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };
#endif

#if __cplusplus >= 201103L
  template<>
    struct __is_integer<char16_t>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<char32_t>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };
#endif

template<>
    struct __is_integer<short>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<unsigned short>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<int>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<unsigned int>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<long>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<unsigned long>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<long long>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_integer<unsigned long long>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

#define __INT_N(TYPE) 			\
  template<>				\
    struct __is_integer<TYPE>		\
    {					\
      enum { __value = 1 };		\
      typedef __true_type __type;	\
    };					\
  template<>				\
    struct __is_integer<unsigned TYPE>	\
    {					\
      enum { __value = 1 };		\
      typedef __true_type __type;	\
    };

#ifdef __GLIBCXX_TYPE_INT_N_0
__INT_N(__GLIBCXX_TYPE_INT_N_0)
#endif
#ifdef __GLIBCXX_TYPE_INT_N_1
__INT_N(__GLIBCXX_TYPE_INT_N_1)
#endif
#ifdef __GLIBCXX_TYPE_INT_N_2
__INT_N(__GLIBCXX_TYPE_INT_N_2)
#endif
#ifdef __GLIBCXX_TYPE_INT_N_3
__INT_N(__GLIBCXX_TYPE_INT_N_3)
#endif

#undef __INT_N

//
  // Floating point types
  //
  template<typename _Tp>
    struct __is_floating
    {
      enum { __value = 0 };
      typedef __false_type __type;
    };

// three specializations (float, double and 'long double')
  template<>
    struct __is_floating<float>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_floating<double>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_floating<long double>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

//
  // Pointer types
  //
  template<typename _Tp>
    struct __is_pointer
    {
      enum { __value = 0 };
      typedef __false_type __type;
    };

template<typename _Tp>
    struct __is_pointer<_Tp*>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

//
  // An arithmetic type is an integer type or a floating point type
  //
  template<typename _Tp>
    struct __is_arithmetic
    : public __traitor<__is_integer<_Tp>, __is_floating<_Tp> >
    { };

//
  // A scalar type is an arithmetic type or a pointer type
  // 
  template<typename _Tp>
    struct __is_scalar
    : public __traitor<__is_arithmetic<_Tp>, __is_pointer<_Tp> >
    { };

//
  // For use in std::copy and std::find overloads for streambuf iterators.
  //
  template<typename _Tp>
    struct __is_char
    {
      enum { __value = 0 };
      typedef __false_type __type;
    };

template<>
    struct __is_char<char>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

#ifdef __WCHAR_TYPE__
  template<>
    struct __is_char<wchar_t>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };
#endif

template<typename _Tp>
    struct __is_byte
    {
      enum { __value = 0 };
      typedef __false_type __type;
    };

template<>
    struct __is_byte<char>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_byte<signed char>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

template<>
    struct __is_byte<unsigned char>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };

#if __cplusplus >= 201703L
  enum class byte : unsigned char;

template<>
    struct __is_byte<byte>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };
#endif // C++17

#ifdef _GLIBCXX_USE_CHAR8_T
  template<>
    struct __is_byte<char8_t>
    {
      enum { __value = 1 };
      typedef __true_type __type;
    };
#endif

template<typename> struct iterator_traits;

// A type that is safe for use with memcpy, memmove, memcmp etc.
  template<typename _Tp>
    struct __is_nonvolatile_trivially_copyable
    {
      enum { __value = __is_trivially_copyable(_Tp) };
    };

// Cannot use memcpy/memmove/memcmp on volatile types even if they are
  // trivially copyable, so ensure __memcpyable<volatile int*, volatile int*>
  // and similar will be false.
  template<typename _Tp>
    struct __is_nonvolatile_trivially_copyable<volatile _Tp>
    {
      enum { __value = 0 };
    };

// Whether two iterator types can be used with memcpy/memmove.
  template<typename _OutputIter, typename _InputIter>
    struct __memcpyable
    {
      enum { __value = 0 };
    };

template<typename _Tp>
    struct __memcpyable<_Tp*, _Tp*>
    : __is_nonvolatile_trivially_copyable<_Tp>
    { };

template<typename _Tp>
    struct __memcpyable<_Tp*, const _Tp*>
    : __is_nonvolatile_trivially_copyable<_Tp>
    { };

// Whether two iterator types can be used with memcmp.
  // This trait only says it's well-formed to use memcmp, not that it
  // gives the right answer for a given algorithm. So for example, std::equal
  // needs to add additional checks that the types are integers or pointers,
  // because other trivially copyable types can overload operator==.
  template<typename _Iter1, typename _Iter2>
    struct __memcmpable
    {
      enum { __value = 0 };
    };

// OK to use memcmp with pointers to trivially copyable types.
  template<typename _Tp>
    struct __memcmpable<_Tp*, _Tp*>
    : __is_nonvolatile_trivially_copyable<_Tp>
    { };

template<typename _Tp>
    struct __memcmpable<const _Tp*, _Tp*>
    : __is_nonvolatile_trivially_copyable<_Tp>
    { };

template<typename _Tp>
    struct __memcmpable<_Tp*, const _Tp*>
    : __is_nonvolatile_trivially_copyable<_Tp>
    { };

// Whether memcmp can be used to determine ordering for a type
  // e.g. in std::lexicographical_compare or three-way comparisons.
  // True for unsigned integer-like types where comparing each byte in turn
  // as an unsigned char yields the right result. This is true for all
  // unsigned integers on big endian targets, but only unsigned narrow
  // character types (and std::byte) on little endian targets.
  template<typename _Tp, bool _TreatAsBytes =
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
	__is_integer<_Tp>::__value
#else
	__is_byte<_Tp>::__value
#endif
    >
    struct __is_memcmp_ordered
    {
      static const bool __value = _Tp(-1) > _Tp(1); // is unsigned
    };

template<typename _Tp>
    struct __is_memcmp_ordered<_Tp, false>
    {
      static const bool __value = false;
    };

// Whether two types can be compared using memcmp.
  template<typename _Tp, typename _Up, bool = sizeof(_Tp) == sizeof(_Up)>
    struct __is_memcmp_ordered_with
    {
      static const bool __value = __is_memcmp_ordered<_Tp>::__value
	&& __is_memcmp_ordered<_Up>::__value;
    };

template<typename _Tp, typename _Up>
    struct __is_memcmp_ordered_with<_Tp, _Up, false>
    {
      static const bool __value = false;
    };

#if __cplusplus >= 201703L
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
  // std::byte is not an integer, but it can be compared using memcmp.
  template<>
    struct __is_memcmp_ordered<std::byte, false>
    { static constexpr bool __value = true; };
#endif

// std::byte can only be compared to itself, not to other types.
  template<>
    struct __is_memcmp_ordered_with<std::byte, std::byte, true>
    { static constexpr bool __value = true; };

template<typename _Tp, bool _SameSize>
    struct __is_memcmp_ordered_with<_Tp, std::byte, _SameSize>
    { static constexpr bool __value = false; };

template<typename _Up, bool _SameSize>
    struct __is_memcmp_ordered_with<std::byte, _Up, _SameSize>
    { static constexpr bool __value = false; };
#endif

//
  // Move iterator type
  //
  template<typename _Tp>
    struct __is_move_iterator
    {
      enum { __value = 0 };
      typedef __false_type __type;
    };

// Fallback implementation of the function in bits/stl_iterator.h used to
  // remove the move_iterator wrapper.
  template<typename _Iterator>
    _GLIBCXX20_CONSTEXPR
    inline _Iterator
    __miter_base(_Iterator __it)
    { return __it; }

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
} // extern "C++"

#endif //_CPP_TYPE_TRAITS_H

${this.title}

Code Editor : cpp_type_traits.h