As I have to interface a lot with some Fortran code these days, and a
full-fledged Cython<->Fortran-binding *may* come out of it (if I
continue to manage using Cython for this task it would be a likely
result in about a year, at least I structure my hacky scripts in that
direction), I feel free to ask a somewhat tangential question:
What is the best way of declaring Fortran types in C? I understand there
is likely no perfect cross-platform solution here, but is the naive
approach taken by f2py (C int == integer(4) == default Fortran integer)
sufficient? Including libgfortran.h or similar is too compiler dependant
and complicated (but I'd be willing to use a single header file with
ifdefs for platforms and compilers, if anyone have such a thing...)
Looking to a Cython binding, I think there would be a seperate type
hierarchy for Fortran types ("cython.fortran.real8" etc.), using Fortran
specific typedefs in C. Furthermore it would be very sweet to
automatically be able to pass Python buffer objects as F90 assumed-shape
arrays :-) (I think a Fortran wrapper module would then have to be
generated, as there's no consistent ABI for those. The same goes for
strings.).
Dag Sverre
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