https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126305
--- Comment #16 from dave.anglin at bell dot net ---
On 2026-07-17 9:16 p.m., kargl at gcc dot gnu.org wrote:
> I think what you/(we) need to do is something like
>
> #if defined(HAVE_ATAN) && !defined(HAVE_ATANL)
> #define HAVE_ATANL 1
> long double atanl(long double);
>
> long double
> atanl(long double x)
> {
> #ifdef __HPUX__
> return ((long double)atanq((__float128)x));
> #else
> return ((long double)atan((double)x));
> #endif
> }
> #endif
>
> The #ifdef __HPUX__ guards against other targets that cannot
> do the cast to __float128, but have a missing long double.
That's a good idea but I think we also need to check that libquadmath support
is enabled.
