CLN: move assignment from header into cython

Author: mattip

pandas/src/datetime.pxd

@@ -42,9 +42,6 @@ cdef extern from "datetime.h":
  object PyDateTime_FromDateAndTime(int year, int month, int day, int hour,
  int minute, int second, int us)
 
-cdef extern from "datetime_helper.h":
- void mangle_nat(object o)
-
 cdef extern from "numpy/ndarrayobject.h":
 
  ctypedef int64_t npy_timedelta

pandas/src/datetime_helper.h

@@ -7,11 +7,6 @@
 #define PyInt_AS_LONG PyLong_AsLong
 #endif
 
-void mangle_nat(PyObject *val) {
- PyDateTime_GET_MONTH(val) = -1;
- PyDateTime_GET_DAY(val) = -1;
-}
-
 npy_int64 get_long_attr(PyObject *o, const char *attr) {
  npy_int64 long_val;
  PyObject *value = PyObject_GetAttrString(o, attr);

pandas/tslib.pyx

@@ -738,7 +738,8 @@ class NaTType(_NaT):
  cdef _NaT base
 
  base = _NaT.__new__(cls, 1, 1, 1)
- mangle_nat(base)
+ base._day = -1
+ base._month = -1
  base.value = NPY_NAT
 
  return base