On Mon, November 17, 2008 11:18 am, Berthold "Höllmann" wrote:

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.

The answer is No. You either have to have a function wrapped or just copy the F_WRAPPEDFUNC macro from numpy/f2py/cfuncs.py to your .pyf file (look at the usercode statement in f2py manual). HTH, Pearu