diff options
Diffstat (limited to 'Include')
| -rw-r--r-- | Include/longobject.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Include/longobject.h b/Include/longobject.h index e452f516..3b808fb 100644 --- a/Include/longobject.h +++ b/Include/longobject.h @@ -44,6 +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. + 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. +*/ +PyAPI_FUNC(size_t) _PyLong_NumBits(PyObject *v); + /* _PyLong_FromByteArray: View the n unsigned bytes as a binary integer in base 256, and return a Python long with the same numeric value. If n is 0, the integer is 0. Else: |