[SciPy-user] f2py: Adding F_WRAPPEDFUNC to*module.c without actually wrapping a function

Berthold "Höllmann" berthold.hoellmann@gl-group....
Mon Nov 17 03:18:33 CST 2008


I am wrapping some LAPACK routines currently not handled in
scipy.linalg. some of them require workspace. In order to provide the
optimal workspace i wrote some helper routines taking the FORTRAN code
for calculating the optimal workspace and translating them C, e.g.::

static int dsytrf_lwork(int n, char uplo) {
  int one = 1;
  int name_len = 6;
  int opts_len = 1;
  int none = -1;
  int nb;
  (*F_WRAPPEDFUNC(ilaenv,ILAENV))(&nb, &one, "DSYTRF", &uplo, &n, &none, &none, &none, name_len, opts_len);
  return (n*nb);
}

and then in the wraper code for dsytrf::

     integer intent(hide), depend(n, uplo) :: lwork = dsytrf_lwork(n, *uplo)

This requires the function wrapper for the FORTRAN ilaenv function::

extern void F_WRAPPEDFUNC(ilaenv,ILAENV)(int*,int*,string,string,int*,int*,int*,int*,size_t,size_t);

Now my code only works when I also wrap the ilanev function (or, I
guess, any other function), otherwise the F_WRAPPEDFUNC is missing in
the generated code. Is there a way to get the F_WRAPPEDFUNC macro to the
wrapper code without wrapping a function? the ilanev function should not
become part of the interface, nor is there any other function that should.

Kind regards

Berthold Höllmann
-- 
Germanischer Lloyd AG
CAE Development
Vorsetzen 35
20459 Hamburg
Phone: +49(0)40 36149-7374
Fax: +49(0)40 36149-7320
e-mail: berthold.hoellmann@gl-group.com
Internet: http://www.gl-group.com
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