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 <__utility/move.h> 18 #include <type_traits> // swap 19 20 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 21 # pragma GCC system_header 22 #endif 23 24 _LIBCPP_BEGIN_NAMESPACE_STD 25 26 template <class _Compare, class _RandomAccessIterator> 27 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX11 28 void __sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare& __comp) { 29 using _CompRef = typename __comp_ref_type<_Compare>::type; 30 _CompRef __comp_ref = __comp; 31 32 using difference_type = typename iterator_traits<_RandomAccessIterator>::difference_type; 33 for (difference_type __n = __last - __first; __n > 1; --__last, (void) --__n) 34 std::__pop_heap<_CompRef>(__first, __last, __comp_ref, __n); 35 } 36 37 template <class _RandomAccessIterator, class _Compare> 38 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 39 void sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) { 40 std::__sort_heap(std::move(__first), std::move(__last), __comp); 41 } 42 43 template <class _RandomAccessIterator> 44 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 45 void sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last) { 46 std::sort_heap(std::move(__first), std::move(__last), 47 __less<typename iterator_traits<_RandomAccessIterator>::value_type>()); 48 } 49 50 _LIBCPP_END_NAMESPACE_STD 51 52 #endif // _LIBCPP___ALGORITHM_SORT_HEAP_H 53