diff options
Diffstat (limited to 'Include')
| -rw-r--r-- | Include/longobject.h | 16 |
1 files changed, 11 insertions, 5 deletions
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_FromString(char *, char **, int); 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. |