One-argument form See also two-argument form Residue
Makes any negative numbers in the right-hand argument positive.
| 2 ¯4 ¯7.8 3 2 4 7.8 3 |(¯0.1 ¯10.1 11.3 25) (2 2½¯10 3 ¯45 2.1) 0.1 10.1 11.3 25 10 3 45 2.1