Variable = Nan or Infinity

[DeputyLOL]

After the problem with RADARALTVERTSPEED, I was wondering if it would be possible for a variable to return 1 if specified variable returns as nan or infinity. I could then use it to quickly spot when there is a problem with something. Thank you. :)

[MOARdV]

What do you mean by "a variable to return 1" - as in "RADARALTVERTSPEED is NaN, so return 1 instead"? Or a separate variable?

I'd rather not take either of those routes, because 1 (especially) is a valid value for a lot of cases, and a separate variable means doubling the number of variables. What I could do instead is to write in the log "This value is NaN" or "This value is Infinity" - RPM used to do that, but I may have broken that functionality at some point in the recent past.

[DeputyLOL]

I mean like custom variables return one when certain variables are between x and y. If we can have a custom variable return 1 when a variable is Nan or infinity then I can use it to automatically disable some systems and prevent confusion. If its not viable then don't bother.

[MOARdV]

Okay. I think I can add a token to the CUSTOM_ variables like ISNANORINF (that's a mouthful), so you can have

RPM_CUSTOM_VARIABLE
{
   name = ISMYVARIABLEINVALID
   operator = ISNANORINF

   SOURCE_VARIABLE
   {
      name = RADARALTVERTSPEED
      range = 0.0, 0.0 // This will be ignored - all we do is test for NaN or Inf.
   }
   ...
}

In this case, it would accept multiple source variables, and it would return 1 if any of them are NaN or Inf, so you can have a bulk "test all of these variables" for things like orbital parameters.

Does that look like it would work for you?

I have some ideas for adding a lot more flexibility, but it is going to take a while (weeks, likely) before I have something worthwhile to show.

[DeputyLOL]

That would be noice!

[MOARdV]

Okay - update on DropBox. CUSTOM variables now recognize ISNANORINF, returns 1 if any variable in the list is NaN, returns 0 if they're all valid numbers.

(With the caveat that it's untested).

[DeputyLOL]

thank you.