On 18/11/14 23:10, Pauli Virtanen wrote: > The second question is whether F2py actually *needs* to check the > dtype-size alignment, or is just something like sizeof(double) enough > for Fortran compilers.
The Fortran standard does not specify an ABI so this is likely compiler dependent. The only safe way of calling Fortran from C is through a proxy Fortran routine exported to C using Fortran 2003 ISO C bindings. That is what f2py should do behind the scenes now that the Fortran 77 limitation is lifted from SciPy. With this method we can just pass an arbitrary C pointer to Fortran and construct a Fortran array pointer with c_f_function. The Fortran compiler will make an aligned copy of the array referenced by the pointer if required. No special coding will be required to ensure correct alignment. Sturla _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
