3 // compile-flags: -Ccodegen-units=1 -O
5 fn linidx(row: usize, col: usize) -> usize {
10 let mut mat = [1.0f32, 5.0, 9.0, 2.0, 6.0, 10.0, 3.0, 7.0, 11.0, 4.0, 8.0, 12.0];
14 if mat[linidx(j, 3)] > mat[linidx(i, 3)] {
16 let (x, rest) = mat.split_at_mut(linidx(i, k) + 1);
17 let a = x.last_mut().unwrap();
18 let b = rest.get_mut(linidx(j, k) - linidx(i, k) - 1).unwrap();
19 ::std::mem::swap(a, b);
24 assert_eq!([9.0, 5.0, 1.0, 10.0, 6.0, 2.0, 11.0, 7.0, 3.0, 12.0, 8.0, 4.0], mat);