A [Gaussian integer] is a complex number whose real and imaginary parts are both integers.

gaussiant provides the [GaussianInt] type, which is a wrapper around [num_complex::Complex] with additional methods for number theoretical computation.

Example

If a prime number p is congruent to 3 modulo 4, then it is a Gaussian prime ([Wikipedia]).

```rust use gaussiant::{GaussianInt, gaussint};

fn main() { let p = gaussint!(7); asserteq!( p.congruent(gaussint!(3), gaussint!(4)), p.isgaussian_prime() ); }

```