| Operator | Function |
|---|---|
| not | returns the boolean opposite of its one argument |
| ! | Alias for not |
| equal? | returns wether or not its arguments are all equal |
| = | alias for equal? |
| != | equal of applying the not operator to equal? |
| > | returns whether its arguments are in strictly descending order |
| >= | returns whether its arguments are in descending order |
| < | returns whether its arguments are in strictly ascending order |
| ⇐ | returns whether its arguments are in ascending order |
| and | returns whether all of its arguments are true |
| or | returns whether any one of its arguments is true |
| xor | returns whether exactly one of its arguments is true |
The values #f and () are both false, while all other ALisp objects are true.
The operators and, or, and xor only evaluate enough arguments (from left to right) to determine their result.