Function svmsb_n_u64_x 

pub fn svmsb_n_u64_x(
    pg: svbool_t,
    op1: svuint64_t,
    op2: svuint64_t,
    op3: u64,
) -> svuint64_t

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

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

Multiply-subtract, multiplicand first Arm’s documentation