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From: jl3p+@andrew.cmu.edu (James Ting Lui)
Newsgroups: comp.sys.next
Subject: pswrap problems
Message-ID: <Qbn4CxC00WBM81_YVm@andrew.cmu.edu>
Date: 27 Feb 91 23:41:49 GMT
Organization: Computer Science, Carnegie Mellon, Pittsburgh, PA
Lines: 39


I have been experimenting with pswrap and postscript.
My driver application executes the following:

    printf( "JUNK!\n" );
    dojunk(3.14159);

and my pswrap code contains:

    defineps dojunk( float junk )
    (***)
    junk
    (*** junk ***)
    pstack
    clear
    endps

Not too complicated:  PI is passed to dojunk() which
then puts it on the stack and is printed out on my terminal.

When this is run, however, my result is this:

    JUNK!
    DPS client library error: PostScript program error, DPSContext 124150
    %%[ Error: undefinedresult; OffendingCommand: bin obj seq, type=128,
  elements=3, size=28 ]%%
    (*** junk *** )
    3.14159
    (***)
    DPS client library error: Invalid tag in returned object, DPSContext
    124150, data 1141552
    DPS client library error: Invalid tag in returned object, DPSContext
124150, data 1141092

I don't understand what all the errors are about.
Someone please help me on this.

Thanks a lot,
  -- Jim