Python/Fortran interoperability

[sturlamolden]

On 24 Aug, 01:59, sturlamolden <sturlamol... at yahoo.no> wrote:

> subroutine foobar(cstr) bind(c, name='foobar')
>     use, intrinsic :: iso_c_binding
>     type(c_ptr) :: cstr
>     character(*), pointer :: fstr
>     call c_f_pointer(cptr, fptr)
>

Which means that you can write a wrapper in Fortran callable from C,
that calls a Fortran routine you want to expose:

subroutine wrap_foobar(cstr) bind(c, name='foobar')
    use, intrinsic :: iso_c_binding
    type(c_ptr) :: cstr
    character(*), pointer :: fstr
    call c_f_pointer(cptr, fptr)
    call foobar(fstr)
end subroutine

subroutine foobar(fstr)
    character(*) :: fstr
    ! whatever
end subroutine

This by the way is how wrap exposes Fortran functions to Cython.