11     fn is_zero(&self) -> bool;  in is_zero()  method
15     ($t:ty, $is_zero:expr) => {
18             fn is_zero(&self) -> bool {
19                 $is_zero(*self)
47     fn is_zero(&self) -> bool {  in is_zero()  method
54     fn is_zero(&self) -> bool {  in is_zero()  method
61     fn is_zero(&self) -> bool {  in is_zero()  method
69         N <= 16 && self.iter().all(IsZero::is_zero)  in is_zero()
82             fn is_zero(&self) -> bool{
88                 $first_arg.is_zero()
89                     $( && $rest.is_zero() )*
108     fn is_zero(&self) -> bool {  in is_zero()  method
115     fn is_zero(&self) -> bool {  in is_zero()  method
131             fn is_zero(&self) -> bool {
157             fn is_zero(&self) -> bool {
172     fn is_zero(&self) -> bool {  in is_zero()  method
173         self.0.is_zero()  in is_zero()
179     fn is_zero(&self) -> bool {  in is_zero()  method
180         self.0.is_zero()  in is_zero()
188             fn is_zero(&self) -> bool {