3 [![crate](https://img.shields.io/crates/v/num-derive.svg)](https://crates.io/crates/num-derive)
4 [![documentation](https://docs.rs/num-derive/badge.svg)](https://docs.rs/num-derive)
5 [![minimum rustc 1.56](https://img.shields.io/badge/rustc-1.56+-red.svg)](https://rust-lang.github.io/rfcs/2495-min-rust-version.html)
6 [![build status](https://github.com/rust-num/num-derive/workflows/master/badge.svg)](https://github.com/rust-num/num-derive/actions)
8 Procedural macros to derive numeric traits in Rust.
12 Add this to your `Cargo.toml`:
20 and this to your crate root:
24 extern crate num_derive;
27 Then you can derive traits on your own types:
30 #[derive(FromPrimitive, ToPrimitive)]
40 - **`full-syntax`** — Enables `num-derive` to handle enum discriminants
41 represented by complex expressions. Usually can be avoided by
42 [utilizing constants], so only use this feature if namespace pollution is
43 undesired and [compile time doubling] is acceptable.
45 [utilizing constants]: https://github.com/rust-num/num-derive/pull/3#issuecomment-359044704
46 [compile time doubling]: https://github.com/rust-num/num-derive/pull/3#issuecomment-359172588
50 Release notes are available in [RELEASES.md](RELEASES.md).
54 The `num-derive` crate is tested for rustc 1.56 and greater.
58 Licensed under either of
60 * [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
61 * [MIT license](http://opensource.org/licenses/MIT)
67 Unless you explicitly state otherwise, any contribution intentionally submitted
68 for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
69 dual licensed as above, without any additional terms or conditions.