Function vaddhn_high_s16 

pub fn vaddhn_high_s16(r: int8x8_t, a: int16x8_t, b: int16x8_t) -> int8x16_t

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

Available on (AArch64 or target_arch=arm64ec) and target feature neon and target feature v7 only.

Add returning High Narrow (high half). Arm’s documentation