Function vraddhn_high_s16 

pub fn vraddhn_high_s16(a: int8x8_t, b: int16x8_t, c: int16x8_t) -> int8x16_t

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

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