fn rr_b(cpu: &mut Cpu) {
        let b = cpu.b();

        let r = rr(cpu, b);

        cpu.set_b(r);
    }
/// Rotate `B` to the right through carry
Rotate `B` to the right through carry
Rotate ` B ` to the right through carry
fn rr_b(cpu: &mut Cpu) {
        let b = cpu.b();
        let r = rr(cpu, b);
        cpu.set_b(r);
    }
fn rr_b ( cpu : & mut Cpu ) { let b = cpu . b ( ) ; let r = rr ( cpu , b ) ; cpu . set_b ( r ) ; }
Rotate `B` to the right through carry
Rotate ` B ` to the right through carry
cpu
&mut Cpu
cpu
&mut Cpu