[libcxx-commits] [libcxx] [libc++][C++03] cherry-pick #106566 (PR #158250)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- libcxx/include/__cxx03/__math/traits.h libcxx/test/std/numerics/c.math/signbit.pass.cpp
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/libcxx/include/__cxx03/__math/traits.h b/libcxx/include/__cxx03/__math/traits.h
index 5b28bfca3..2b6ca406a 100644
--- a/libcxx/include/__cxx03/__math/traits.h
+++ b/libcxx/include/__cxx03/__math/traits.h
@@ -42,9 +42,8 @@ _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI bool signbit(double __x) _NOEXCEP
 
 template <class = void>
 _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI bool signbit(long double __x) _NOEXCEPT {
-   return __builtin_signbit(__x);
- }
-
+  return __builtin_signbit(__x);
+}
 
 template <class _A1, __enable_if_t<is_integral<_A1>::value && is_signed<_A1>::value, int> = 0>
 _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI bool signbit(_A1 __x) _NOEXCEPT {

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https://github.com/llvm/llvm-project/pull/158250