[libc++] Format the code base (#74334)

This patch runs clang-format on all of libcxx/include and libcxx/src, in
accordance with the RFC discussed at [1]. Follow-up patches will format
the benchmarks, the test suite and remaining parts of the code. I'm
splitting this one into its own patch so the diff is a bit easier to
review.

This patch was generated with:

   find libcxx/include libcxx/src -type f \
      | grep -v 'module.modulemap.in' \
      | grep -v 'CMakeLists.txt' \
      | grep -v 'README.txt' \
      | grep -v 'libcxx.imp' \
      | grep -v '__config_site.in' \
      | xargs clang-format -i

A Git merge driver is available in libcxx/utils/clang-format-merge-driver.sh
to help resolve merge and rebase issues across these formatting changes.

[1]: https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all

1 files changed, 9 insertions, 11 deletions

diff --git a/libcxx/include/__functional/pointer_to_unary_function.h b/libcxx/include/__functional/pointer_to_unary_function.h
index ee13acfff757..0338e7671789 100644
--- a/libcxx/include/__functional/pointer_to_unary_function.h
+++ b/libcxx/include/__functional/pointer_to_unary_function.h
@@ -23,21 +23,19 @@ _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _Arg, class _Result>
 class _LIBCPP_TEMPLATE_VIS _LIBCPP_DEPRECATED_IN_CXX11 pointer_to_unary_function
-    : public __unary_function<_Arg, _Result>
-{
-    _Result (*__f_)(_Arg);
+    : public __unary_function<_Arg, _Result> {
+  _Result (*__f_)(_Arg);
+
 public:
-    _LIBCPP_HIDE_FROM_ABI explicit pointer_to_unary_function(_Result (*__f)(_Arg))
-        : __f_(__f) {}
-    _LIBCPP_HIDE_FROM_ABI _Result operator()(_Arg __x) const
-        {return __f_(__x);}
+  _LIBCPP_HIDE_FROM_ABI explicit pointer_to_unary_function(_Result (*__f)(_Arg)) : __f_(__f) {}
+  _LIBCPP_HIDE_FROM_ABI _Result operator()(_Arg __x) const { return __f_(__x); }
 };
 
 template <class _Arg, class _Result>
-_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_HIDE_FROM_ABI
-pointer_to_unary_function<_Arg,_Result>
-ptr_fun(_Result (*__f)(_Arg))
-    {return pointer_to_unary_function<_Arg,_Result>(__f);}
+_LIBCPP_DEPRECATED_IN_CXX11 inline _LIBCPP_HIDE_FROM_ABI pointer_to_unary_function<_Arg, _Result>
+ptr_fun(_Result (*__f)(_Arg)) {
+  return pointer_to_unary_function<_Arg, _Result>(__f);
+}
 
 #endif // _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_BINDERS)