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 <__config> 13 #include <__algorithm/comp.h> 14 #include <__algorithm/comp_ref_type.h> 15 #include <__algorithm/pop_heap.h> 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_PUSH_MACROS 24 #include <__undef_macros> 25 26 _LIBCPP_BEGIN_NAMESPACE_STD 27 28 template <class _Compare, class _RandomAccessIterator> 29 _LIBCPP_CONSTEXPR_AFTER_CXX17 void 30 __sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) 31 { 32 typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type; 33 for (difference_type __n = __last - __first; __n > 1; --__last, (void) --__n) 34 _VSTD::__pop_heap<_Compare>(__first, __last, __comp, __n); 35 } 36 37 template <class _RandomAccessIterator, class _Compare> 38 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 39 void 40 sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) 41 { 42 typedef typename __comp_ref_type<_Compare>::type _Comp_ref; 43 _VSTD::__sort_heap<_Comp_ref>(__first, __last, __comp); 44 } 45 46 template <class _RandomAccessIterator> 47 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 48 void 49 sort_heap(_RandomAccessIterator __first, _RandomAccessIterator __last) 50 { 51 _VSTD::sort_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>()); 52 } 53 54 _LIBCPP_END_NAMESPACE_STD 55 56 _LIBCPP_POP_MACROS 57 58 #endif // _LIBCPP___ALGORITHM_SORT_HEAP_H 59