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

[pinskia at gcc dot gnu.org via Gcc-bugs]

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

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>Wouldn't it be better to rewrite __builtin_sqrt so that these tests are done 
>inside __builtin_sqrt and not already in the calling context?

NO, in fact it is designed this way to better optimize sqrt in the normal case.