Function tdpbsud_internal 

unsafe extern "unadjusted" fn tdpbsud_internal(
    m: u16,
    n: u16,
    k: u16,
    dst: Simd<u8, 1024>,
    a: Simd<u8, 1024>,
    b: Simd<u8, 1024>,
) -> Simd<u8, 1024>

Available on x86-64 only.