Move invert3x3 out of general purpose utils.hxx header
#4241
| Job | Run time |
|---|---|
| 12m 13s | |
| 18m 41s | |
| 23m 26s | |
| 13m 44s | |
| 15m 13s | |
| 21m 25s | |
| 14m 0s | |
| 13m 26s | |
| 13m 50s | |
| 15m 13s | |
| 2h 41m 11s |