Function svext_u64 

pub fn svext_u64<const IMM3: i32>(
    op1: svuint64_t,
    op2: svuint64_t,
) -> svuint64_t

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

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

Extract vector from pair of vectors Arm’s documentation