Function svqdmullt_n_s64 

pub fn svqdmullt_n_s64(op1: svint32_t, op2: i32) -> svint64_t

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

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

Saturating doubling multiply long (top) Arm’s documentation