6 /// A type representing a vector lane count.
7 pub struct LaneCount<const LANES: usize>;
9 impl<const LANES: usize> LaneCount<LANES> {
10 /// The number of bytes in a bitmask with this many lanes.
11 pub const BITMASK_LEN: usize = (LANES + 7) / 8;
14 /// Helper trait for vector lane counts.
15 pub trait SupportedLaneCount: Sealed {
17 type BitMask: Copy + Default + AsRef<[u8]> + AsMut<[u8]>;
23 impl<const LANES: usize> Sealed for LaneCount<LANES> {}
25 impl SupportedLaneCount for LaneCount<1> {
26 type BitMask = [u8; 1];
29 impl SupportedLaneCount for LaneCount<2> {
30 type BitMask = [u8; 1];
33 impl SupportedLaneCount for LaneCount<4> {
34 type BitMask = [u8; 1];
37 impl SupportedLaneCount for LaneCount<8> {
38 type BitMask = [u8; 1];
41 impl SupportedLaneCount for LaneCount<16> {
42 type BitMask = [u8; 2];
43 type IntBitMask = u16;
45 impl SupportedLaneCount for LaneCount<32> {
46 type BitMask = [u8; 4];
47 type IntBitMask = u32;