pub fn eye(n: usize) -> Matrix {
    let mut m = zeros(n, n);
    for i in 0..n {
        m[(i, i)] = 1f64;
    }
    m
}
MATLAB like linspace

# Examples
```
use peroxide::fuga::*;

let a = linspace(1, 10, 10);
assert_eq!(a, seq(1,10,1));
assert_eq!(a.le
src/util/non_macro.rs