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_SORT_HEAP_H 10 #define _LIBCPP___ALGORITHM_SORT_HEAP_H 11 12 #include <__algorithm/comp.h> 13 #include <__algorithm/comp_ref_type.h> 14 #include <__algorithm/pop_heap.h> 15 #include <__config> 16 #include <__iterator/iterator_traits.h> 17 #include <type_traits> // swap 18 19 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 20 # pragma GCC system_header 21 # pragma clang include_instead(<algorithm>) 22 #endif 23 24 _LIBCPP_BEGIN_NAMESPACE_STD 25 26 template <class _Compare, class _RandomAccessIterator> 27 _LIBCPP_CONSTEXPR_AFTER_CXX17 void 28 __sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) 29 { 30 typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; 31 for (difference_type __n = __last - __first; __n > 1; --__last, (void) --__n) 32 _VSTD::__pop_heap<_Compare>(__first, __last, __comp, __n); 33 } 34 35 template <class _RandomAccessIterator, class _Compare> 36 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 37 void 38 sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) 39 { 40 typedef typename __comp_ref_type<_Compare>::type _Comp_ref; 41 _VSTD::__sort_heap<_Comp_ref>(__first, __last, __comp); 42 } 43 44 template <class _RandomAccessIterator> 45 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 46 void 47 sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last) 48 { 49 _VSTD::sort_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>()); 50 } 51 52 _LIBCPP_END_NAMESPACE_STD 53 54 #endif // _LIBCPP___ALGORITHM_SORT_HEAP_H 55