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_FILL_H 10 #define _LIBCPP___ALGORITHM_FILL_H 11 12 #include <__config> 13 #include <__iterator/iterator_traits.h> 14 #include <type_traits> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 #pragma GCC system_header 18 #endif 19 20 _LIBCPP_PUSH_MACROS 21 #include <__undef_macros> 22 23 _LIBCPP_BEGIN_NAMESPACE_STD 24 25 // fill_n 26 27 template <class _OutputIterator, class _Size, class _Tp> 28 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 29 _OutputIterator 30 __fill_n(_OutputIterator __first, _Size __n, const _Tp& __value_) 31 { 32 for (; __n > 0; ++__first, (void) --__n) 33 *__first = __value_; 34 return __first; 35 } 36 37 template <class _OutputIterator, class _Size, class _Tp> 38 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 39 _OutputIterator 40 fill_n(_OutputIterator __first, _Size __n, const _Tp& __value_) 41 { 42 return _VSTD::__fill_n(__first, _VSTD::__convert_to_integral(__n), __value_); 43 } 44 45 // fill 46 47 template <class _ForwardIterator, class _Tp> 48 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 49 void 50 __fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, forward_iterator_tag) 51 { 52 for (; __first != __last; ++__first) 53 *__first = __value_; 54 } 55 56 template <class _RandomAccessIterator, class _Tp> 57 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 58 void 59 __fill(_RandomAccessIterator __first, _RandomAccessIterator __last, const _Tp& __value_, random_access_iterator_tag) 60 { 61 _VSTD::fill_n(__first, __last - __first, __value_); 62 } 63 64 template <class _ForwardIterator, class _Tp> 65 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 66 void 67 fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_) 68 { 69 _VSTD::__fill(__first, __last, __value_, typename iterator_traits<_ForwardIterator>::iterator_category()); 70 } 71 72 _LIBCPP_END_NAMESPACE_STD 73 74 _LIBCPP_POP_MACROS 75 76 #endif // _LIBCPP___ALGORITHM_FILL_H 77