Gaetano Mendola <mendola@bigfoot.com> writes:
> Is ABS enough on a 64-bit architecture ?
That was pseudocode, I wasn't actually planning to rely on a function.
Something more like
long diff;
diff = stack_base_ptr - &stack_top_loc;if (diff < 0) diff = -diff;if (diff > max) elog ...
regards, tom lane