Function vrshrn_n_u64 

pub fn vrshrn_n_u64(a: uint64x2_t, const N: i32) -> uint32x2_t

🔬This is a nightly-only experimental API. (stdarch_arm_neon_intrinsics #111800)

Available on target feature neon and target feature v7 and (AArch64 or ARM or ARM64EC) and (AArch64 or ARM64EC) and (AArch64 or ARM64EC or target feature v7) only.

Rounding shift right narrow Arm’s documentation