_PyLong_NumBits(): The definition of this was too specific to the quirky
needs of pickling longs. Backed off to a definition that's much easier
to understand. The pickler will have to work a little harder, but other
uses are more likely to be correct <0.5 wink>.
_PyLong_Sign(): New teensy function to characterize a long, as to <0, ==0,
or >0.
diff --git a/Include/longobject.h b/Include/longobject.h
index 3b808fb..1ac213c 100644
--- a/Include/longobject.h
+++ b/Include/longobject.h
@@ -44,11 +44,17 @@
PyAPI_FUNC(PyObject *) PyLong_FromUnicode(Py_UNICODE*, int, int);
#endif
-/* _PyLong_NumBits. Return the number of bits needed to represent a long
- in contiguous 2's-complement form, including 1 for the sign bit. For
- example, this returns 1 for 0, and 2 for 1 and -1. Note that the
- ceiling of this divided by 8 is the number of bytes needed by
- _PyLong_AsByteArray to store the long in 256's-complement form.
+/* _PyLong_Sign. Return 0 if v is 0, -1 if v < 0, +1 if v > 0.
+ v must not be NULL, and must be a normalized long.
+ There are no error cases.
+*/
+PyAPI_FUNC(int) _PyLong_Sign(PyObject *v);
+
+
+PyAPI_FUNC(size_t) _PyLong_NumBits(PyObject *v);
+/* _PyLong_NumBits. Return the number of bits needed to represent the
+ absolute value of a long. For example, this returns 1 for 1 and -1, 2
+ for 2 and -2, and 2 for 3 and -3. It returns 0 for 0.
v must not be NULL, and must be a normalized long.
(size_t)-1 is returned and OverflowError set if the true result doesn't
fit in a size_t.