Function extendr_api::prelude::perm::swap_cols_idx
pub fn swap_cols_idx<E>(mat: MatMut<'_, E>, a: usize, b: usize)where
E: ComplexField,
Expand description
Swaps the two columns at indices a
and b
in the given matrix.
§Panics
Panics if either a
or b
is out of bounds.
§Example
use faer::{mat, perm::swap_cols_idx};
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],
];
swap_cols_idx(m.as_mut(), 0, 2);
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);