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_GENERATE_N_H 10 #define _LIBCPP___ALGORITHM_GENERATE_N_H 11 12 #include <__config> 13 #include <__utility/convert_to_integral.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_BEGIN_NAMESPACE_STD 21 22 template <class _OutputIterator, class _Size, class _Generator> 23 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20 24 _OutputIterator 25 generate_n(_OutputIterator __first, _Size __orig_n, _Generator __gen) 26 { 27 typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize; 28 _IntegralSize __n = __orig_n; 29 for (; __n > 0; ++__first, (void) --__n) 30 *__first = __gen(); 31 return __first; 32 } 33 34 _LIBCPP_END_NAMESPACE_STD 35 36 #endif // _LIBCPP___ALGORITHM_GENERATE_N_H 37