Function vsra_n_u64 

pub fn vsra_n_u64(a: uint64x1_t, b: uint64x1_t, const N: i32) -> uint64x1_t

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

Unsigned shift right and accumulate Arm’s documentation