Rename block_scan_algorithm to scan_algorithm

[bernhardmgruber]

This member of three_way_partition_policy was the only tuning policy member of for a BlockScanAlgorithm that was not spelled scan_algorithm. Renaming for consistency. See also: https://docs.google.com/spreadsheets/d/1EUdwvmv2n7-WRp30-lt7CQxyu8r6atdfJJx3O6Pf1Ag

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Reviewing files that changed from the base of the PR and between 4de514e and 90c3bac.

📒 Files selected for processing (2)

• cub/cub/device/dispatch/kernels/kernel_three_way_partition.cuh
• cub/cub/device/dispatch/tuning/tuning_three_way_partition.cuh

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• cub/cub/device/dispatch/kernels/kernel_three_way_partition.cuh

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Summary

This PR renames the block_scan_algorithm member to scan_algorithm in the three_way_partition_policy struct for consistency with other tuning policy naming conventions. The rename is tracked in the referenced tuning-policy spreadsheet.

Changes

cub/cub/device/dispatch/tuning/tuning_three_way_partition.cuh

• Renamed member block_scan_algorithm → scan_algorithm (type: BlockScanAlgorithm) in three_way_partition_policy.
• Updated equality operator to compare lhs.scan_algorithm == rhs.scan_algorithm.
• Updated stream output to print .scan_algorithm = and to access policy.scan_algorithm.

cub/cub/device/dispatch/kernels/kernel_three_way_partition.cuh

• Updated AgentThreeWayPartitionPolicyT instantiation to use active_policy.scan_algorithm (replaced prior use of active_policy.block_scan_algorithm).

Impact

• Localized rename and call-site update; other files already follow scan_algorithm naming.
• No exported/public API signature changes beyond the member rename in the tuning policy type.
• Lines changed are minimal (+1 / -1 in kernel; +3 / -3 in tuning header). Estimated review effort: Medium.

Walkthrough

suggestion: Rename three_way_partition_policy::block_scan_algorithm to scan_algorithm; update kernel instantiation and host formatter to use scan_algorithm. All observable call sites in these changes now reference the new member name.

Changes

Three-way partition policy rename

Layer / File(s)	Summary
Policy member rename and host formatter cub/cub/device/dispatch/tuning/tuning_three_way_partition.cuh	Replace block_scan_algorithm with scan_algorithm in three_way_partition_policy. Update equality comparison and host operator<< to reference scan_algorithm and print policy.scan_algorithm.
Kernel consumer update cub/cub/device/dispatch/kernels/kernel_three_way_partition.cuh	DeviceThreeWayPartitionKernel now passes active_policy.scan_algorithm to AgentThreeWayPartitionPolicyT as the scan algorithm template argument.

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📥 Commits

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📒 Files selected for processing (2)

• cub/cub/device/dispatch/kernels/kernel_three_way_partition.cuh
• cub/cub/device/dispatch/tuning/tuning_three_way_partition.cuh

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