[Bug c++/109378] new builtin like __builtin_sqrt but does not set errno

[g.peterhoff--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109378

--- Comment #8 from g.peterh...@t-online.de ---
But I don't want and can't use a version of std::sqrt that requires compiler
specific flags/options/__builtins and injects internals of
std::sqrt/__builtin_sqrt into the calling context/function.
I just want to have a very dumb std::sqrt that does its error handling
internally.
Sorry, but is that too much to ask?