Do an exclusive prefix-sum operation for all work-items in a sub-group.

gentype sub_group_scan_exclusive< op > ( gentype x)


Do an exclusive scan operation specified by < op > of all values specified by work-items in a sub-group. The scan results are returned for each work-item.

The scan order is defined by increasing 1D linear global ID within the 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.


OpenCL Specification

Also see


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