How do I determine Nan/+Inf/-Inf from within my program?

[MattPfenninger]

Hello,

I'm trying to progam a numerical routine within LabWindows/CVI 6.0 and can't seem to locate the isnan()/isinf()/etc. subroutines.

What are they called in LabWindows/CVI?

Thanks,

- Matt Pfenninger
UltraDots, Inc.
Fremont, CA

[LuisG]

Matt,

These functions were only added in CVI 7.1, so that explains why you're not finding them.

In CVI 7.1 they were added to the Programmer's Toolbox library, which is open-source. So I'm attaching the source code for those functions here. They should work just fine in CVI 6.0.

Luis
NI