I am trying to access the internal structure of a Python long. The code
fragment below works when I use Pyrex 0.9.8.4 but generates a compile error
when using Cython 0.9.8.
Is there a better way to access the internals of a Python long?
What is causing the cimport error and how can I fix it?
Thanks,
casevh
------------------------------------------------------
The code:
cdef extern from "Python.h":
ctypedef struct PyTypeObject:
pass
ctypedef struct PyObject:
Py_ssize_t ob_refcnt
PyTypeObject * ob_type
cdef extern from "longintrepr.h":
cdef struct _longobject:
int ob_refcnt
PyTypeObject * ob_type
int ob_size
unsigned int * ob_digit
def test(temp = long(0)):
cdef _longobject *l
l = <_longobject *> temp
print sizeof(l.ob_size)
print sizeof(l.ob_digit[0])
The error:
Error converting Pyrex file to C:
------------------------------------------------------------
...
int ob_size
unsigned int * ob_digit
def test(temp = long(0)):
cdef _longobject *l
l = <_longobject *> temp
print sizeof(l.ob_size)
^
------------------------------------------------------------
/home/case/code/cvh.pyx:16:18: 'cvh.test' is not a cimported module
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