Function extendr_api::prelude::perm::swap_cols

pub fn swap_cols<E>(a: ColMut<'_, E>, b: ColMut<'_, E>)
where
    E: ComplexField,

Swaps the values in the columns a and b.

Panics

Panics if a and b don’t have the same number of columns.

Example

use faer::{mat, perm::swap_cols};

let mut m = mat![
    [1.0, 2.0, 3.0],
    [4.0, 5.0, 6.0],
    [7.0, 8.0, 9.0],
    [10.0, 14.0, 12.0],
];

let (a, b) = m.as_mut().two_cols_mut(0, 2);
swap_cols(a, b);

let swapped = mat![
    [3.0, 2.0, 1.0],
    [6.0, 5.0, 4.0],
    [9.0, 8.0, 7.0],
    [12.0, 14.0, 10.0],
];

assert_eq!(m, swapped);