Function svqdech_n_u64 

pub fn svqdech_n_u64<const IMM_FACTOR: i32>(op: u64) -> u64

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

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

Saturating decrement by number of halfword elements Arm’s documentation