Function svqrdmlah_s64 

pub fn svqrdmlah_s64(
    op1: svint64_t,
    op2: svint64_t,
    op3: svint64_t,
) -> 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