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 <__config>
13 #include <__algorithm/comp.h>
14 #include <__algorithm/is_heap_until.h>
15 #include <__iterator/iterator_traits.h>
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 template <class _RandomAccessIterator, class _Compare>
27 _LIBCPP_NODISCARD_EXT inline
28 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
29 bool
30 is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
31 {
32     return _VSTD::is_heap_until(__first, __last, __comp) == __last;
33 }
34 
35 template<class _RandomAccessIterator>
36 _LIBCPP_NODISCARD_EXT inline
37 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
38 bool
39 is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
40 {
41     return _VSTD::is_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
42 }
43 
44 _LIBCPP_END_NAMESPACE_STD
45 
46 _LIBCPP_POP_MACROS
47 
48 #endif // _LIBCPP___ALGORITHM_IS_HEAP_H
49