NOT operator
Use the ¬ (NOT) operator to reverse the testing of relational-expressions.
For example, the statements TESTNOTA and TESTNOTB make the same
test. The relational expression is true when the return code is between
0 and 8:
//TESTNOTA IF ¬(RC > 8) THEN
//TESTNOTB IF (RC <= 8) THEN
The statements TESTNOTC
and TESTNOTD make the same test; the relational expression is true
when the return code is 0, 1, 2, 3, 4, 5, 6, 7, 9, or 10. //TESTNOTC IF ¬(RC = 8 | RC > 10) THEN
//TESTNOTD IF (RC ¬= 8 & RC <= 10) THEN
Note that the use of the ¬ operator reverses both the logical and comparison operators.
You do not need to code a blank between the ¬ operator and the expression it is reversing.