gentype
sub_group_reduce< op >
(
| gentype x) |
Return result of reduction operation specified
by < op
> for all values of
x
specified by workitems in a sub-group.
We use the generic type name gentype to indicate the built-in data types half, int, uint, long, ulong, float or double as the type for the arguments. Type half requires the cl_khr_fp16 extension. Type double is optional.