fn res_b(cpu: &mut Cpu, bit: u8) {
        let b = cpu.b();

        cpu.set_b(res(b, bit));
    }
/// Helper function to clear bits in `B`
Helper function to clear bits in `B`
Helper function to clear bits in ` B `
fn res_b(cpu: &mut Cpu, bit: u8) {
        let b = cpu.b();
        cpu.set_b(res(b, bit));
    }
fn res_b ( cpu : & mut Cpu , bit : u8 ) { let b = cpu . b ( ) ; cpu . set_b ( res ( b , bit ) ) ; }
Helper function to clear bits in `B`
Helper function to clear bits in ` B `
cpu
&mut Cpu
bit
u8
cpu
&mut Cpu
bit
u8