Function svaddhnb_n_s64 

pub fn svaddhnb_n_s64(op1: svint64_t, op2: i64) -> svint32_t

🔬This is a nightly-only experimental API. (stdarch_aarch64_sve #145052)

Available on (AArch64 or ARM64EC) and target feature sve and target feature sve2 only.

Add narrow high part (bottom) Arm’s documentation