Section 11,70: NOT

 NOT (integer)

 A function that complements each bit of the argument (bitwise
 complement).
 +------+---------+----------+------------+-------------+        
 | Args | Generic | Specific |  Argument  | Result Type |
 +------+---------+----------+------------+-------------+
 |  1   |  NOT    |  --      | INTEGER*1  | INTEGER*1   |
 |      |         | INOT     | INTEGER*2  | INTEGER*2   |
 |      |         | JNOT     | INTEGER*4  | INTEGER*4   |
 |      |see note | KNOT     | INTEGER*8  | INTEGER*8   |
 +------+---------+----------+------------+-------------+

 NOTE: KNOT is only available on AXP systems.