[PYTHON MATRIX-SIG] LAPACK module questions

[Doug Heisterkamp]

''
> 
> We'd be interested in hearing about your parser. We face many tasks like
> this. 

Actually, parser may be a little to generous to describe it.  I wrote it
as a throwaway program target at f2c version of the Lapack source code.
It scans for the first function definition in a file and grabs it.  The 
parameter list is parsed and depending on the parameter type, different
information is added to the end of a number of different lists.  These
lists are then used to generate the C function to access the original 
function.  The first comment after the function definition is placed as
the __doc__ attribute of the access function.  Of course this is written
in python.

I made a number of assumption about the parameter list.  The main one
is that I assume that all parameters which are double or complex are
actually pointers to arrays.  This was needed since in the C version,
both a double and an array of doubles is referred to as double *a, in
the function definition.  I will have to change the cases where this is
the wrong assumption by hand. Until I make the change, the function could
still be used, but it would be necessary to place the double in a python
array object of a single element and then use this array object in the 
function call.

Similarly, I made the assumption that all integer parameters are not 
arrays.  My goal was to get close and then make changes as needed.

Doug

 
> -- 
> Paul F. Dubois, L-472				(510)-422-5426
> Lawrence Livermore National Laboratory		FAX (510)-423-9969
> Livermore, CA 94550				dubois1@llnl.gov
> Consulting: PaulDubois@aol.com
> 


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