Function vdup_laneq_u16 

pub fn vdup_laneq_u16(a: uint16x8_t, const N: i32) -> uint16x4_t

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

Set all vector lanes to the same value Arm’s documentation