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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/contrib/llvm-project/libcxx/src/algorithm.cpp
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//===----------------------------------------------------------------------===//

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//

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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

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// See https://llvm.org/LICENSE.txt for license information.

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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

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//

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//===----------------------------------------------------------------------===//

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#include <algorithm>

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#include <bit>

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_LIBCPP_BEGIN_NAMESPACE_STD

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template <class Comp, class RandomAccessIterator>

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void __sort(RandomAccessIterator first, RandomAccessIterator last, Comp comp) {

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  auto depth_limit = 2 * std::__bit_log2(static_cast<size_t>(last - first));

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  // Only use bitset partitioning for arithmetic types.  We should also check

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  // that the default comparator is in use so that we are sure that there are no

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  // branches in the comparator.

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  std::__introsort<_ClassicAlgPolicy,

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                   ranges::less,

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                   RandomAccessIterator,

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                   __use_branchless_sort<ranges::less, RandomAccessIterator>::value>(

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      first, last, ranges::less{}, depth_limit);

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}

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// clang-format off

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template void __sort<__less<char>&, char*>(char*, char*, __less<char>&);

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#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS

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template void __sort<__less<wchar_t>&, wchar_t*>(wchar_t*, wchar_t*, __less<wchar_t>&);

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#endif

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template void __sort<__less<signed char>&, signed char*>(signed char*, signed char*, __less<signed char>&);

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template void __sort<__less<unsigned char>&, unsigned char*>(unsigned char*, unsigned char*, __less<unsigned char>&);

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template void __sort<__less<short>&, short*>(short*, short*, __less<short>&);

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template void __sort<__less<unsigned short>&, unsigned short*>(unsigned short*, unsigned short*, __less<unsigned short>&);

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template void __sort<__less<int>&, int*>(int*, int*, __less<int>&);

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template void __sort<__less<unsigned>&, unsigned*>(unsigned*, unsigned*, __less<unsigned>&);

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template void __sort<__less<long>&, long*>(long*, long*, __less<long>&);

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template void __sort<__less<unsigned long>&, unsigned long*>(unsigned long*, unsigned long*, __less<unsigned long>&);

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template void __sort<__less<long long>&, long long*>(long long*, long long*, __less<long long>&);

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template void __sort<__less<unsigned long long>&, unsigned long long*>(unsigned long long*, unsigned long long*, __less<unsigned long long>&);

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template void __sort<__less<float>&, float*>(float*, float*, __less<float>&);

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template void __sort<__less<double>&, double*>(double*, double*, __less<double>&);

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template void __sort<__less<long double>&, long double*>(long double*, long double*, __less<long double>&);

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// clang-format on

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_LIBCPP_END_NAMESPACE_STD

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