Okay, I found a function addum to add two
vlbit_1d values together.  Is there a
corresponding type of function to do a
greater/lesser type compare?

I don't think so. But the package contains a function
"v1d2int" that converts a vector to an integer. (I don't now how the vector is
interpreted: as unsigned or twos complement).
With this functions comparison of two vector v1 and v2 is easy:

    v1_less_then_v2 := v1d2int(v1) < v1d2int(v2)

Bert Molenkamp
Dept. of Computer Science
University of Twente
PO Box 217
7500 AE  Enschede
the Netherlands