_NEGATE

_NEGATE is a boolean logical operator that will change a false statement to a true one and vice-versa.

Syntax

result = _NEGATE value

Description

• Unlike NOT, which evaluates a value and returns the bitwise opposite, _NEGATE returns the logical opposite. Meaning that _NEGATE non_zero_value = 0.
• Often called a negative logic operator, it returns the opposite of a value as true or false.

Availability

• 

  none

• 

  v3.13.0

• 
• 

  yes

• 

  yes

• 

  yes

Examples

Example: NOT versus _NEGATE

DECLARE LIBRARY FUNCTION isdigit& (BYVAL n AS LONG) END DECLARE IF NOT isdigit(ASC("1")) THEN PRINT "NOT: 1 is not a digit." ELSE PRINT "NOT: 1 is a digit." END IF IF _NEGATE isdigit(ASC("1")) THEN PRINT "_NEGATE: 1 is not a digit." ELSE PRINT "_NEGATE: 1 is a digit." END IF END

NOT: 1 is not a digit. _NEGATE: 1 is a digit.

Explanation: NOT is a bitwise operator that inverts all the bits in an integer, whereas _NEGATE is a logical operator that flips the truth value of a boolean expression.

See also

• Featured in our "Keyword of the Day" series
• _BIT, &B, _BYTE
• AND, XOR, OR
• AND (boolean), XOR (boolean), OR (boolean)
• _ANDALSO, _ORELSE
• Binary, Boolean
• Mathematical Operations

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