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

Rounding shift right narrow Arm’s documentation