rust/src/libcore/num.rs
Erick Tryzelaar e8102e73a9 core: Add a Zero and One trait to num
I believe these are the last traits we need in order
to start grouping our numerical types into mathematical
groups and rings.
2012-12-20 07:15:04 -08:00

33 lines
1015 B
Rust

// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! An interface for numeric types
pub trait Num {
// FIXME: Trait composition. (#2616)
pure fn add(&self, other: &self) -> self;
pure fn sub(&self, other: &self) -> self;
pure fn mul(&self, other: &self) -> self;
pure fn div(&self, other: &self) -> self;
pure fn modulo(&self, other: &self) -> self;
pure fn neg(&self) -> self;
pure fn to_int(&self) -> int;
static pure fn from_int(n: int) -> self;
}
pub trait Zero {
static pure fn zero() -> self;
}
pub trait One {
static pure fn one() -> self;
}