Function vmlal_laneq_s16 

pub fn vmlal_laneq_s16(
    a: int32x4_t,
    b: int16x4_t,
    c: int16x8_t,
    const LANE: i32,
) -> int32x4_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.

Vector widening multiply accumulate with scalar Arm’s documentation