[Bug libgcc/78576] [PPC] wrong long double to long int conversion

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78576

--- Comment #9 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to joseph@codesourcery.com from comment #7)
> What are the actual high and low doubles in the return from powl?  The 
> simplest reason for the reported result here would be that powl returns a 
> result very slightly less than 27 (which is fine; there is no expectation 
> of powl, or any operations for IBM long double, being correctly rounded).

Using gdb, I see:

(gdb) info registers f1 f2
f1             27       (raw 0x403b000000000000)
f2             -3.0814879110195774e-33  (raw 0xb930000000000000)