Function svget4_f64 

pub fn svget4_f64<const IMM_INDEX: i32>(tuple: svfloat64x4_t) -> svfloat64_t

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

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

Extract one vector from a tuple of four vectors Arm’s documentation