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 #endif 22 23 _LIBCPP_BEGIN_NAMESPACE_STD 24 25 template <class _Compare, class _RandomAccessIterator> 26 _LIBCPP_CONSTEXPR_AFTER_CXX17 void 27 __sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) 28 { 29 typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; 30 for (difference_type __n = __last - __first; __n > 1; --__last, (void) --__n) 31 _VSTD::__pop_heap<_Compare>(__first, __last, __comp, __n); 32 } 33 34 template <class _RandomAccessIterator, class _Compare> 35 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 36 void 37 sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) 38 { 39 typedef typename __comp_ref_type<_Compare>::type _Comp_ref; 40 _VSTD::__sort_heap<_Comp_ref>(__first, __last, __comp); 41 } 42 43 template <class _RandomAccessIterator> 44 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 45 void 46 sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last) 47 { 48 _VSTD::sort_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>()); 49 } 50 51 _LIBCPP_END_NAMESPACE_STD 52 53 #endif // _LIBCPP___ALGORITHM_SORT_HEAP_H 54