Re: calcPerform

[Marty Kraimer <mrk@aps.anl.gov>]

Dirk Zimoch wrote:
> Hi folks,
>
> some time ago, Timo Korhonen has patched the calcPerform function to 
> return -1 (=error) if the result of the calculation is nan. This has 
> been done to raise an INVALID_ALARM and not to process the OUT link if 
> IVOA="Don't drive outputs". (That required a patch of the calcout 
> record, too. But that's an other story.)
>
> My question is: should calcPerform return -1 as well if the result is 
> inf (or -inf) ?
>
> Awaiting your comments,
> Dirk



In the latest 3.13 and 3.14 I find


grep isnan *.c
calcPerform.c:        return(((isnan(*presult)||isinf(*presult)) ? -1 : 0));
sCalcPerform.c:        if (isnan(ps->d)) {
sCalcPerform.c:                        if (isnan(*pd)) {
sCalcPerform.c: return(((isnan(*presult)||isinf(*presult)) ? -1 : 0));

Marty Kraimer