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From: d89-mlt@sm.luth.se (Morgan Lindqvist)
Newsgroups: comp.sys.handhelds
Subject: HP48:Errorhandling help,strange feature and a little problem
Keywords: HP48 Error
Message-ID: <1548@tau.sm.luth.se>
Date: 18 Apr 91 17:50:49 GMT
Distribution: comp
Organization: University of Lulea, Sweden
Lines: 65


Hello World!

I have a BIG and a tiny problem, hope you out there
can help me solving them.
                        
The BIG problem:
---------------
When one in a program or a library does a #201h DOERR
the HP says:

Error:
Too Few Arguments

How do I do if I want it to say:

HDrcl Error:
Too Few Arguments

HDrcl is the program there the DOERR reside.

e.i How do I tell the errorhandler that it is the
    command HDrcl is the active one.

If you key in a program like this with a library
attached, you will get a very strange error message if
you detach and purge the library and then run the
program.

\<< 12 'Test' STO Library_command \>>

The HP will say:

STO Error:
Undefined XLIB Name
4:
3:
2:           12
1:       'Test'

Yes, your eyes are telling you the right thing. The
arguments to STO are still on the stack AND there is a
new variable called Test containing 12 on the
directory.

I understand why it says 'Undefined XLIB Name', but I
was very surprised that the errorhandler still thinks
that STO is the present command and there fore
restores the stack as it looked before the STO
command.

NOTE: I have a HP48-A, can someone whit a version D or
      E verify this behavior.

Now to something more easy 

The tiny problem:
----------------
Where can I get the IFERR library


I am eagerly waiting for YOUR answer
(E-Mail OR c.s.h (h=handhels or h=hp48))

Morgan Lindqvist d89-mlt@sm.luth.se