pub const W4A16_BATCHM_WIDTHS: [u32; 5];Expand description
2026-09-25: Tier widths in this family, narrowest first. Parallel to the handles
field of W4a16BatchmTiers and to the present array of
select_tier. w4a16_gemv_batch16/_batch32 are not in this table:
they are held separately (wide, wide32) and handed out only above 8
rows, within the row edge (W4a16BatchmTiers::edge).