Function vdup_n_p16 

pub fn vdup_n_p16(value: u16) -> poly16x4_t

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

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

Duplicate vector element to vector or scalar Arm’s documentation