# Other operators

## not

Mainly used in boolean expressions, it turns TRUE expressions (<> 0) FALSE, and FALSE expressions (== 0) TRUE.

Examples:

    (= Result (not TRUE)) ; the result will be FALSE

    (= Result (not FALSE)) ; the result will be TRUE

    (= Result (not 5)) ; the result will be 0

    (= Result (not 0)) ; the result will be 1

## -

Negates integers. If the number is positive, it will become negative. If the number is negative, it will become positive.

Examples:

    (= Result (- 10)) ; the result will be -10
    (= Result -10) ; the result will be -10. In this case, -10 is a :doc:`numericliteral`.
    (= Result (- SomeVar) ; the result will be the negative of SomeVar