https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90106
--- Comment #2 from Frederico Lamberti Pissarra <fredericopissarra at gmail dot com> --- (In reply to Andrew Pinski from comment #1) > It is <0 when sqrt is called and it is due setting errno. Not a bug. Hummmm... interesting. But why the inefficient code?