https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126464
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 65161
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=65161&action=edit
gcc17-pr126464.patch
Untested fix.
This perhaps extends it too much in some cases, e.g. that float [-inf, -inf]
on reverse from double extends to [-inf, -0x0.ffffffp+128] when for IEEE double
to float and rounding to nearest only [-inf, -0x0.ffffff8p+128] would be
strictly required. But am not sure how to handle that portably...
Anyway, the problem is that any doiuble smaller or equal to that
-0x0.ffffff8p+128 when cast to float results in -inf.
