//===----------------------------------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// #ifndef _LIBCPP___ALGORITHM_PUSH_HEAP_H #define _LIBCPP___ALGORITHM_PUSH_HEAP_H #include <__algorithm/comp.h> #include <__algorithm/comp_ref_type.h> #include <__config> #include <__iterator/iterator_traits.h> #include <__utility/move.h> #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) #pragma GCC system_header #endif _LIBCPP_BEGIN_NAMESPACE_STD template _LIBCPP_CONSTEXPR_AFTER_CXX11 void __sift_up(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp, typename iterator_traits<_RandomAccessIterator>::difference_type __len) { typedef typename iterator_traits<_RandomAccessIterator>::value_type value_type; if (__len > 1) { __len = (__len - 2) / 2; _RandomAccessIterator __ptr = __first + __len; if (__comp(*__ptr, *--__last)) { value_type __t(_VSTD::move(*__last)); do { *__last = _VSTD::move(*__ptr); __last = __ptr; if (__len == 0) break; __len = (__len - 1) / 2; __ptr = __first + __len; } while (__comp(*__ptr, __t)); *__last = _VSTD::move(__t); } } } template inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 void push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp) { typedef typename __comp_ref_type<_Compare>::type _Comp_ref; _VSTD::__sift_up<_Comp_ref>(__first, __last, __comp, __last - __first); } template inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 void push_heap(_RandomAccessIterator __first, _RandomAccessIterator __last) { _VSTD::push_heap(__first, __last, __less::value_type>()); } _LIBCPP_END_NAMESPACE_STD #endif // _LIBCPP___ALGORITHM_PUSH_HEAP_H