775 pub enum ExtMode {  enum
788 impl ExtMode {  impl
790     pub(crate) fn new(from_bits: u16, to_bits: u16) -> Option<ExtMode> {  in new()  argument
792             (1, 8) | (1, 16) | (1, 32) | (8, 16) | (8, 32) => Some(ExtMode::BL),  in new()
793             (1, 64) | (8, 64) => Some(ExtMode::BQ),  in new()
794             (16, 32) => Some(ExtMode::WL),  in new()
795             (16, 64) => Some(ExtMode::WQ),  in new()
796             (32, 64) => Some(ExtMode::LQ),  in new()
802 impl fmt::Debug for ExtMode {  implementation
805             ExtMode::BL => "bl",  in fmt()
806             ExtMode::BQ => "bq",  in fmt()
807             ExtMode::WL => "wl",  in fmt()
808             ExtMode::WQ => "wq",  in fmt()
809             ExtMode::LQ => "lq",  in fmt()
815 impl fmt::Display for ExtMode {  implementation