core/portable-simd/crates/core_simd/src/
lane_count.rsmod sealed {
pub trait Sealed {}
}
use sealed::Sealed;
pub struct LaneCount<const N: usize>;
impl<const N: usize> LaneCount<N> {
pub const BITMASK_LEN: usize = (N + 7) / 8;
}
pub trait SupportedLaneCount: Sealed {
#[doc(hidden)]
type BitMask: Copy + Default + AsRef<[u8]> + AsMut<[u8]>;
}
impl<const N: usize> Sealed for LaneCount<N> {}
macro_rules! supported_lane_count {
($($lanes:literal),+) => {
$(
impl SupportedLaneCount for LaneCount<$lanes> {
type BitMask = [u8; ($lanes + 7) / 8];
}
)+
};
}
supported_lane_count!(1, 2, 4, 8, 16, 32, 64);
#[cfg(feature = "all_lane_counts")]
supported_lane_count!(
3, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
31, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63
);