Function svcadd_s8 

pub fn svcadd_s8<const IMM_ROTATION: i32>(
    op1: svint8_t,
    op2: svint8_t,
) -> svint8_t

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

Available on target feature sve2 and target feature sve and (AArch64 or ARM64EC) only.

Complex add with rotate Arm’s documentation