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§Traits for MIN and MAX associated constants
At the time of writing, all primitive numeric types in Rust provide MIN and MAX associated constants, which nonetheless do not belong to any trait.
One commonly used crate, num-traits, offers many useful traits for numeric types. However, the closest
analogue of min_max_traits::Min and min_max_traits::Max offered by num-traits at the time of writing
is num_traits::Bounded, which requires implementation of min_value() and max_value() functions. Since const_fn_trait_bound feature is in the works, num_traits::Bounded cannot be used in generic implementations of constant functions
relying on MIN and MAX associated constants, at least on stable Rust.
These traits can be useful, for example, to generically implement associated constants storing the greatest length of primitive integers when converted to strings.
Excerpt from Rust’s reference:
§Numeric types
§Integer types
The unsigned integer types consist of:
| Type | Minimum | Maximum |
|---|---|---|
u8 | 0 | 28-1 |
u16 | 0 | 216-1 |
u32 | 0 | 232-1 |
u64 | 0 | 264-1 |
u128 | 0 | 2128-1 |
The signed two’s complement integer types consist of:
| Type | Minimum | Maximum |
|---|---|---|
i8 | -(27) | 27-1 |
i16 | -(215) | 215-1 |
i32 | -(231) | 231-1 |
i64 | -(263) | 263-1 |
i128 | -(2127) | 2127-1 |
§Floating-point types
The IEEE 754-2008 “binary32” and “binary64” floating-point types are f32 and
f64, respectively.
§License
Licensed under either of Apache License, Version 2.0 or MIT license at your option.Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.