[libcxx-commits] [libcxx] [libc++] Clarify clock behavior before epoch (LWG 3318) (PR #144697)

[Benedek Kaibas via libcxx-commits]

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@@ -420,6 +430,8 @@ template<class charT, class traits, class Duration>     // C++20
   basic_ostream<charT, traits>&
     operator<<(basic_ostream<charT, traits>& os, const file_time<Duration>& tp);
 
+/// The class steady_clock is monotonic and it does not support negative time points.
+/// Wheter it supports time before its epoch is unspecified.
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benedekaibas wrote:

Thank you! I'll make the changes based on your suggestions!

https://github.com/llvm/llvm-project/pull/144697