Function svdupq_lane_s64 

pub fn svdupq_lane_s64(data: svint64_t, index: u64) -> svint64_t

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

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

Broadcast a quadword of scalars Arm’s documentation