problem with mod(x,y) in Eval y=f(x) VI

[gharris]

I can't seem to get mod to work in the Eval y=f(x) VI.  I entered "mod(x,20)" for a formula and get error -23001 "Syntax error of parser".  If I instead use "x-20*floor(x/20)" which should be the exact same thing, it works - no error.  Any idea what I'm doing wrong with mod?

[Darin.K · Accepted solution]

That function is not supported in the Formula Evaluation VIs.  In fact, no function of two variables is supported.  My usual workaround in similar cases is to use a little regex voodoo, in this case to replace the mod expression by its longhand equivalent.

You could also modify the Eval VIs to add the '%' function, which I did for the heck of it, but it is a jungle in there.

[gharris]

aah - that explains it.  Thanks, and nice string parsing!