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| -rw-r--r-- | Doc/c-api/buffer.rst | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Doc/c-api/buffer.rst b/Doc/c-api/buffer.rst index 74693ac..7df9c33 100644 --- a/Doc/c-api/buffer.rst +++ b/Doc/c-api/buffer.rst @@ -98,8 +98,11 @@ The new-style Py_buffer struct suboffset value that it negative indicates that no de-referencing should occur (striding in a contiguous memory block). + If all suboffsets are negative (i.e. no de-referencing is needed, then + this field must be NULL (the default value). + Here is a function that returns a pointer to the element in an N-D array - pointed to by an N-dimesional index when there are both non-NULL strides + pointed to by an N-dimensional index when there are both non-NULL strides and suboffsets:: void *get_item_pointer(int ndim, void *buf, Py_ssize_t *strides, |