libcxx/include/__fwd/span.h

   1 // -*- C++ -*-
   2 //===---------------------------------------------------------------------===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===---------------------------------------------------------------------===//
   9
  10 #ifndef _LIBCPP___FWD_SPAN_H
  11 #define _LIBCPP___FWD_SPAN_H
  12
  13 #include <__config>
  14 #include <cstddef>
  15 #include <limits>
  16
  17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  18 #  pragma GCC system_header
  19 #endif
  20
  21 _LIBCPP_PUSH_MACROS
  22 #include <__undef_macros>
  23
  24 _LIBCPP_BEGIN_NAMESPACE_STD
  25
  26 #if _LIBCPP_STD_VER >= 20
  27
  28 inline constexpr size_t dynamic_extent = numeric_limits<size_t>::max();
  29 template <typename _Tp, size_t _Extent = dynamic_extent> class span;
  30
  31 #endif
  32
  33 _LIBCPP_END_NAMESPACE_STD
  34
  35 _LIBCPP_POP_MACROS
  36
  37 #endif // _LIBCPP___FWD_SPAN_H