I just added http://trac.cython.org/cython_trac/ticket/441
Basically,
ctypedef float myfloat;
...
print some_myfloat * some_complex
miscompiles as "some_myfloat" is coerced to "myfloat complex" (which,
interestingly, is a type which can't be created or used in any other way!)
Fixing this requires some thought.
This probably broke because (in order to fix another bug) I stepped away
from "the order something is needed in Cython decides output order in
C". I believe that was a correct decision and don't want to step back.
The proper solution is a DAG of all types and their dependencies. I
believe that is a bit heavy/destabilizing for 0.12 though. Perhaps
output all very simply typedefs (typedefs of ints and floats) first,
then complex, then the rest?
However there's another issue: Unlike what I originally thought, it is
then possible to do e.g.
cdef extern from "foo.h":
ctypdef double mydouble # is size correct?
print (some_mydouble * some_complex).imag
This can fail spectacularily as we currently rely on determining
__Pyx_c_prod vs. __Pyx_c_prodf and so on at Cythonization time.
Lisandro, did you mention efforts in this direction?
Dag Sverre
_______________________________________________
Cython-dev mailing list
[email protected]
http://codespeak.net/mailman/listinfo/cython-dev
