Not

not corresponds to the unary boolean 'not' operator that can also be abbreviated by !.

Syntax

    not EXPR_LOG
    ! EXPR_LOG

• EXPR_LOG is an expression that returns a numeric value (considered as false if zero; otherwise, true).

Examples

   # Is I different from 1?
    If not(I = 1)
       # Here, I is not equal to 1
    Endif

Description

not returns a boolean value (1=true, 0=false) depending on an expression that has a true (not zero) value or false (zero value) depending on the corresponding table:

EXPR_LOG value	not(EXPR_LOG) value
false (0)	true (1)
true (not equal to 0)	false (0)

Associated errors

Error code	Description
10	The argument is not a number.

See also

and, or, xor.