Function core::arch::aarch64::vrshrn_high_n_u64

pub unsafe fn vrshrn_high_n_u64(
    a: uint32x2_t, 
    b: uint64x2_t, 
    const N: i32
) -> uint32x4_t

This is supported on AArch64 and target feature neon only.

Rounding shift right narrow