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[SYCL][Doc] Add leader to GroupAlgorithms #1297

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bader merged 2 commits into from
Mar 19, 2020
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[SYCL][Doc] Add leader to GroupAlgorithms #1297

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[SYCL][Doc] Add leader to GroupAlgorithms
Pennycook Mar 12, 2020
16b7596
[SYCL][Doc] Clarify behavior of leader algorithm
Pennycook Mar 12, 2020
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10 changes: 10 additions & 0 deletions sycl/doc/extensions/GroupAlgorithms/SYCL_INTEL_group_algorithms.asciidoc
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Expand Up @@ -62,6 +62,7 @@ The extension introduces the following functions:
- +any_of+
- +all_of+
- +none_of+
- +leader+
- +broadcast+
- +reduce+
- +exclusive_scan+
Expand Down Expand Up @@ -181,6 +182,15 @@ It is undefined behavior for any of these functions to be invoked within a +para
|Return +true+ if _pred_ returns +true+ for no element in the range [_first_, _last_). _first_, _last_ and _pred_ must be the same for all work-items in the group.
|===

==== Elect

|===
|Function|Description

|+template <typename Group> bool leader(Group g);+
|Return +true+ if the calling work-item is the elected leader of the group.
|===

==== Collectives

In this section, the meaning of "exclusive scan" and "inclusive scan" are as defined in Sections 29.8.7 and 29.8.8 of the {cpp}17 specification, respectively.
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