Trait Swizzle

pub trait Swizzle<const N: usize> {
    const INDEX: [usize; N];

    // Provided methods
    fn swizzle<T, const M: usize>(vector: Simd<T, M>) -> Simd<T, N>
       where T: SimdElement,
             LaneCount<N>: SupportedLaneCount,
             LaneCount<M>: SupportedLaneCount { ... }
    fn concat_swizzle<T, const M: usize>(
        first: Simd<T, M>,
        second: Simd<T, M>,
    ) -> Simd<T, N>
       where T: SimdElement,
             LaneCount<N>: SupportedLaneCount,
             LaneCount<M>: SupportedLaneCount { ... }
    fn swizzle_mask<T, const M: usize>(mask: Mask<T, M>) -> Mask<T, N>
       where T: MaskElement,
             LaneCount<N>: SupportedLaneCount,