make comment about restricted types more precise
@@ -33,7 +33,8 @@ def scatter_add(a, slices, value):
v (array-like): Values to increment ``a`` at referenced locations.
.. note::
- It only supports types that are supported by CUDA's atomicAdd.
+ It only supports types that are supported by CUDA's atomicAdd when
+ an integer array is included in ``slices``.
The supported types are ``numpy.float32``, ``numpy.int32``,
``numpy.uint32``, ``numpy.uint64`` and ``numpy.ulonglong``.
