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include/ddc/transform_reduce.hpp

@@ -120,6 +120,14 @@ T transform_reduce(
             std::forward<UnaryTransformOp>(transform));
 }
 
+/** A reduction over a nD domain in serial. Can be called from a device kernel.
+ * @param[in] domain the range over which to apply the algorithm
+ * @param[in] neutral the neutral element of the reduction operation
+ * @param[in] reduce a binary FunctionObject that will be applied in unspecified order to the
+ *            results of transform, the results of other reduce and neutral.
+ * @param[in] transform a unary FunctionObject that will be applied to each element of the input
+ *            range. The return type must be acceptable as input to reduce
+ */
 template <class... DDims, class T, class BinaryReductionOp, class UnaryTransformOp>
 KOKKOS_FUNCTION T annotated_transform_reduce(
         DiscreteDomain<DDims...> const& domain,