Function pack_lhs

pub unsafe fn pack_lhs<T: Copy, const N: usize, const MR: usize, S: Simd>(
    _: S,
    m: usize,
    k: usize,
    dst: Ptr<T>,
    src: Ptr<T>,
    src_cs: isize,
    src_rs: isize,
    dst_stride: usize,
)