[Bug fortran/106579] ieee_signaling_nan problem in fortran on powerpc64

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106579

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ok, I'll first implement __builtin_issignaling and then
conv_intrinsic_ieee_{value,class}.