Bruce Momjian <bruce(at)momjian(dot)us> writes:
> Tom, on HPPA, does ERANGE get set for both overflow and underflow? I
> assume only overflow.
Yeah, AFAICT exp() just returns zero for underflow cases. I get
regression=# select exp(-2000);
ERROR: value out of range: underflow
but I was getting that before your last patch, too.
regards, tom lane