Function vrhadd_s32 

pub fn vrhadd_s32(a: int32x2_t, b: int32x2_t) -> int32x2_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.

Rounding halving add Arm’s documentation