Справка Houdini на русском Nodes VOP nodes

Is Finite VOP node

Returns 1 if the number is a normal number, ie, not infinite or NAN.

This operator returns 1 if the provided number is a normal number, or 0 for infinite numbers or NANs.

VEX will try not to generate these numbers, but incoming geometry or fields may introduce them to the system.

See also

VOP nodes