- How to compile
  type 'make'
- how to run
  nurb_iv1 > out1
  nurb_iv2 < in > out2

  use ivview to open the output file

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This submission to ACM TOMS contains three routine in C 
    1. pcp2nurb.c	-- this is the (sub)routine to be refereed
    2. nurb_iv1.c   -- driver 1: generates 4 nurbs patches on a cube
    3. nurb_iv2.c   -- driver 2: generates a more complex object
and one ascii data input file
    4. in2          -- input data to driver 2
and two ascii data output files (for comparison)
    5. out1         -- output data from driver 1
    6. out2         -- output data from driver 2
