libcxx/include/__algorithm/is_heap.h

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef _LIBCPP___ALGORITHM_IS_HEAP_H
  10 #define _LIBCPP___ALGORITHM_IS_HEAP_H
  11
  12 #include <__algorithm/comp.h>
  13 #include <__algorithm/comp_ref_type.h>
  14 #include <__algorithm/is_heap_until.h>
  15 #include <__config>
  16 #include <__iterator/iterator_traits.h>
  17
  18 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  19 #  pragma GCC system_header
  20 #endif
  21
  22 _LIBCPP_BEGIN_NAMESPACE_STD
  23
  24 template <class _RandomAccessIterator, class _Compare>
  25 _LIBCPP_NODISCARD_EXT inline
  26 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
  27 bool
  28 is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
  29 {
  30     return std::__is_heap_until(__first, __last, static_cast<__comp_ref_type<_Compare> >(__comp)) == __last;
  31 }
  32
  33 template<class _RandomAccessIterator>
  34 _LIBCPP_NODISCARD_EXT inline
  35 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
  36 bool
  37 is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
  38 {
  39     return _VSTD::is_heap(__first, __last, __less<>());
  40 }
  41
  42 _LIBCPP_END_NAMESPACE_STD
  43
  44 #endif // _LIBCPP___ALGORITHM_IS_HEAP_H