HelenOS sources

root/uspace/lib/cpp/include/__bits/

[..]
abi.hpp adt/ algorithm.hpp atomic.hpp aux.hpp
builtins.hpp chrono.hpp complex.hpp exception.hpp functional/
insert_iterator.hpp io/ iterator.hpp iterator_helpers.hpp limits.hpp
locale/ memory/ new.hpp numeric.hpp random.hpp
ratio.hpp refcount_obj.hpp regex.hpp scoped_allocator.hpp stdexcept.hpp
string/ system_error.hpp test/ thread/ trycatch.hpp
tuple/ type_traits/ type_transformation.hpp typeindex.hpp typeinfo.hpp
utility/
[..]
HelenOS homepage, sources at GitHub