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Implement is_one and Inv for Complex. #17

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Mar 5, 2018
Merged

Implement is_one and Inv for Complex. #17

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0b25b1e
Implement is_one for Complex.
clarfonthey Feb 27, 2018
1cd2903
Implement Inv for Complex.
clarfonthey Feb 27, 2018
02c2c90
Bump deps, fix c/p error.
clarfonthey Mar 4, 2018
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2 changes: 1 addition & 1 deletion Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ readme = "README.md"
[dependencies]

[dependencies.num-traits]
version = "0.2.0"
version = "0.2.1"
default-features = false
features = ["std"]

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25 changes: 24 additions & 1 deletion src/lib.rs
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Expand Up @@ -31,7 +31,7 @@ use std::hash;
use std::ops::{Add, Div, Mul, Neg, Sub, Rem};
use std::str::FromStr;

use traits::{Zero, One, Num, Float};
use traits::{Zero, One, Num, Inv, Float};

// FIXME #1284: handle complex NaN & infinity etc. This
// probably doesn't map to C's _Complex correctly.
Expand Down Expand Up @@ -664,6 +664,24 @@ impl<'a, T: Clone + Num + Neg<Output = T>> Neg for &'a Complex<T> {
}
}

impl<T: Clone + Num + Neg<Output = T>> Inv for Complex<T> {
type Output = Complex<T>;

#[inline]
fn inv(self) -> Complex<T> {
(&self).inv()
}
}

impl<'a, T: Clone + Num + Neg<Output = T>> Inv for &'a Complex<T> {
type Output = Complex<T>;

#[inline]
fn inv(self) -> Complex<T> {
self.inv()
}
}

macro_rules! real_arithmetic {
(@forward $imp:ident::$method:ident for $($real:ident),*) => (
impl<'a, T: Clone + Num> $imp<&'a T> for Complex<T> {
Expand Down Expand Up @@ -841,6 +859,11 @@ impl<T: Clone + Num> One for Complex<T> {
fn one() -> Complex<T> {
Complex::new(One::one(), Zero::zero())
}

#[inline]
fn is_one(&self) -> bool {
self.re.is_one() && self.im.is_zero()
}
}

macro_rules! write_complex {
Expand Down