Function vextq_s64 

pub fn vextq_s64(a: int64x2_t, b: int64x2_t, const N: i32) -> int64x2_t

🔬This is a nightly-only experimental API. (stdarch_arm_neon_intrinsics #111800)

Available on (AArch64 or target_arch=arm64ec) and target feature neon and target feature v7 only.

Extract vector from pair of vectors Arm’s documentation