X-Git-Url: https://git.distorted.org.uk/~mdw/mLib-python/blobdiff_plain/78911cdb6782ddccef6de3cc913b714e10d2fc14..HEAD:/crc32.pyx

diff --git a/crc32.pyx b/crc32.pyx
index 5584df2..f4072a0 100644
--- a/crc32.pyx
+++ b/crc32.pyx
@@ -24,25 +24,29 @@
 ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 cdef class CRC32:
+  """CRC32(): calculate CRC32 of a stream"""
   cdef uint32 _a
   def __cinit__(me, *hunoz, **hukairz):
     me._a = 0
   def __init__(me):
     pass
   def chunk(me, data):
+    """C.chunk(STR): process another chunk of input"""
     cdef void *p
     cdef Py_ssize_t n
-    PyObject_AsReadBuffer(data, &p, &n)
+    PyObject_AsReadBuffer(data, <cvp *>&p, &n)
     me._a = c_crc32(me._a, p, n)
     return me
   def done(me):
+    """C.done() -> INT: return CRC of data"""
     return _u32(me._a)
 
 def crc32(data):
+  """crc32(STR) -> INT"""
   cdef void *p
   cdef Py_ssize_t n
   cdef uint32 c
-  PyObject_AsReadBuffer(data, &p, &n)
+  PyObject_AsReadBuffer(data, <cvp *>&p, &n)
   c = c_crc32(0, p, n)
   return _u32(c)