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reduction.hpp File Reference
#include <cudf/aggregation.hpp>
#include <cudf/scalar/scalar.hpp>

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 cuDF interfaces


enum  cudf::scan_type : bool { INCLUSIVE, EXCLUSIVE }
 Enum to describe scan operation type.


std::unique_ptr< scalar > cudf::reduce (column_view const &col, std::unique_ptr< reduce_aggregation > const &agg, data_type output_dtype, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
 Computes the reduction of the values in all rows of a column. More...
std::unique_ptr< column > cudf::segmented_reduce (column_view const &segmented_values, device_span< size_type const > offsets, segmented_reduce_aggregation const &agg, data_type output_dtype, null_policy null_handling, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
 Compute reduction of each segment in the input column. More...
std::unique_ptr< column > cudf::scan (const column_view &input, std::unique_ptr< scan_aggregation > const &agg, scan_type inclusive, null_policy null_handling=null_policy::EXCLUDE, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
 Computes the scan of a column. More...
std::pair< std::unique_ptr< scalar >, std::unique_ptr< scalar > > cudf::minmax (column_view const &col, rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
 Determines the minimum and maximum values of a column. More...