extern "stallable.sv" {
    // A latency-sensitive multiplier that takes 4 cycles to compute its result.
    // If stall is set to a value of 1, the multiplier will stall until the value is
    // set back to 0.
    static<4> primitive stallable_mult[WIDTH] (
        @clk clk: 1,
        @reset reset: 1,
        stall: 1,
        left: WIDTH,
        right: WIDTH
    ) -> (
        out: WIDTH
    );
}