Function vmulq_lane_s16 

pub fn vmulq_lane_s16(a: int16x8_t, b: int16x4_t, const LANE: i32) -> int16x8_t

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

Multiply Arm’s documentation