Function svqrdmlah_n_s64 

pub fn svqrdmlah_n_s64(op1: svint64_t, op2: svint64_t, op3: i64) -> svint64_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.

Saturating rounding doubling multiply-add high Arm’s documentation