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Commit | Line | Data |
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4462d4a0 XL |
1 | // |
2 | // compile-flags: -Ccodegen-units=1 -O | |
3 | ||
4 | fn linidx(row: usize, col: usize) -> usize { | |
5 | row * 1 + col * 3 | |
6 | } | |
7 | ||
8 | fn main() { | |
9 | 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]; | |
10 | ||
11 | for i in 0..2 { | |
12 | for j in i+1..3 { | |
13 | if mat[linidx(j, 3)] > mat[linidx(i, 3)] { | |
14 | for k in 0..4 { | |
15 | let (x, rest) = mat.split_at_mut(linidx(i, k) + 1); | |
16 | let a = x.last_mut().unwrap(); | |
17 | let b = rest.get_mut(linidx(j, k) - linidx(i, k) - 1).unwrap(); | |
18 | ::std::mem::swap(a, b); | |
19 | } | |
20 | } | |
21 | } | |
22 | } | |
23 | 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); | |
24 | } |