411 pub trait FromPrimitive: Sized {  interface
416         n.to_i64().and_then(FromPrimitive::from_i64)  in from_isize()
423         FromPrimitive::from_i64(From::from(n))  in from_i8()
430         FromPrimitive::from_i64(From::from(n))  in from_i16()
437         FromPrimitive::from_i64(From::from(n))  in from_i32()
454         n.to_i64().and_then(FromPrimitive::from_i64)  in from_i128()
461         n.to_u64().and_then(FromPrimitive::from_u64)  in from_usize()
468         FromPrimitive::from_u64(From::from(n))  in from_u8()
475         FromPrimitive::from_u64(From::from(n))  in from_u16()
482         FromPrimitive::from_u64(From::from(n))  in from_u32()
499         n.to_u64().and_then(FromPrimitive::from_u64)  in from_u128()
506         FromPrimitive::from_f64(From::from(n))  in from_f32()
518             Some(i) => FromPrimitive::from_i64(i),  in from_f64()
519             None => n.to_u64().and_then(FromPrimitive::from_u64),  in from_f64()
527         impl FromPrimitive for $T {  impl
652 impl<T: FromPrimitive> FromPrimitive for Wrapping<T> {