xref: /openbsd-src/gnu/llvm/libcxx/include/__algorithm/generate_n.h (revision 4bdff4bed0e3d54e55670334c7d0077db4170f86)
176d0caaeSpatrick //===----------------------------------------------------------------------===//
276d0caaeSpatrick //
376d0caaeSpatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
476d0caaeSpatrick // See https://llvm.org/LICENSE.txt for license information.
576d0caaeSpatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
676d0caaeSpatrick //
776d0caaeSpatrick //===----------------------------------------------------------------------===//
876d0caaeSpatrick 
976d0caaeSpatrick #ifndef _LIBCPP___ALGORITHM_GENERATE_N_H
1076d0caaeSpatrick #define _LIBCPP___ALGORITHM_GENERATE_N_H
1176d0caaeSpatrick 
1276d0caaeSpatrick #include <__config>
13*4bdff4beSrobert #include <__utility/convert_to_integral.h>
1476d0caaeSpatrick #include <type_traits>
1576d0caaeSpatrick 
1676d0caaeSpatrick #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
1776d0caaeSpatrick #  pragma GCC system_header
1876d0caaeSpatrick #endif
1976d0caaeSpatrick 
2076d0caaeSpatrick _LIBCPP_BEGIN_NAMESPACE_STD
2176d0caaeSpatrick 
2276d0caaeSpatrick template <class _OutputIterator, class _Size, class _Generator>
23*4bdff4beSrobert inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
2476d0caaeSpatrick _OutputIterator
generate_n(_OutputIterator __first,_Size __orig_n,_Generator __gen)2576d0caaeSpatrick generate_n(_OutputIterator __first, _Size __orig_n, _Generator __gen)
2676d0caaeSpatrick {
2776d0caaeSpatrick     typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
2876d0caaeSpatrick     _IntegralSize __n = __orig_n;
2976d0caaeSpatrick     for (; __n > 0; ++__first, (void) --__n)
3076d0caaeSpatrick         *__first = __gen();
3176d0caaeSpatrick     return __first;
3276d0caaeSpatrick }
3376d0caaeSpatrick 
3476d0caaeSpatrick _LIBCPP_END_NAMESPACE_STD
3576d0caaeSpatrick 
3676d0caaeSpatrick #endif // _LIBCPP___ALGORITHM_GENERATE_N_H
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