NEGATE: Difference between revisions
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{{DISPLAYTITLE:_NEGATE}} | |||
[[_NEGATE]] is a [[Boolean|boolean]] logical operator that will change a false statement to a true one and vice-versa. | [[_NEGATE]] is a [[Boolean|boolean]] logical operator that will change a false statement to a true one and vice-versa. | ||
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{{PageDescription}} | {{PageDescription}} | ||
* Unlike [[NOT]], which evaluates a value and returns the bitwise opposite, [[_NEGATE]] returns the logical opposite. Meaning that {{InlineCode}} | * Unlike [[NOT]], which evaluates a value and returns the bitwise opposite, [[_NEGATE]] returns the logical opposite. Meaning that {{InlineCode}}_NEGATE {{Parameter|non_zero_value}} = 0{{InlineCodeEnd}}. | ||
* Often called a negative logic operator, it returns the opposite of a value as true or false. | * Often called a negative logic operator, it returns the opposite of a value as true or false. | ||
{{PageAvailability}} | |||
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{{Cl|IF}} {{Cl|NOT}} {{Text|isdigit|#55FF55}}({{Cl|ASC (function)|ASC}}({{Text|<nowiki>"1"</nowiki>|#FFB100}})) {{Cl|THEN}} | {{Cl|IF}} {{Cl|NOT}} {{Text|isdigit|#55FF55}}({{Cl|ASC (function)|ASC}}({{Text|<nowiki>"1"</nowiki>|#FFB100}})) {{Cl|THEN}} | ||
{{Cl|PRINT}} {{Text|<nowiki>"NOT: 1 is not a digit"</nowiki>|#FFB100}} | {{Cl|PRINT}} {{Text|<nowiki>"NOT: 1 is not a digit."</nowiki>|#FFB100}} | ||
{{Cl|ELSE}} | {{Cl|ELSE}} | ||
{{Cl|PRINT}} {{Text|<nowiki>"NOT: 1 is a digit."</nowiki>|#FFB100}} | {{Cl|PRINT}} {{Text|<nowiki>"NOT: 1 is a digit."</nowiki>|#FFB100}} | ||
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{{Cl|IF}} {{Cl|_NEGATE}} {{Text|isdigit|#55FF55}}({{Cl|ASC (function)|ASC}}({{Text|<nowiki>"1"</nowiki>|#FFB100}})) {{Cl|THEN}} | {{Cl|IF}} {{Cl|_NEGATE}} {{Text|isdigit|#55FF55}}({{Cl|ASC (function)|ASC}}({{Text|<nowiki>"1"</nowiki>|#FFB100}})) {{Cl|THEN}} | ||
{{Cl|PRINT}} {{Text|<nowiki>"_NEGATE: 1 is not a digit"</nowiki>|#FFB100}} | {{Cl|PRINT}} {{Text|<nowiki>"_NEGATE: 1 is not a digit."</nowiki>|#FFB100}} | ||
{{Cl|ELSE}} | {{Cl|ELSE}} | ||
{{Cl|PRINT}} {{Text|<nowiki>"_NEGATE: 1 is a digit."</nowiki>|#FFB100}} | {{Cl|PRINT}} {{Text|<nowiki>"_NEGATE: 1 is a digit."</nowiki>|#FFB100}} | ||
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{{Cl|END}} | {{Cl|END}} | ||
{{CodeEnd}} | {{CodeEnd}} | ||
{{OutputStart}}NOT: 1 is not a digit | {{OutputStart}}NOT: 1 is not a digit. | ||
_NEGATE: 1 is a digit. | _NEGATE: 1 is a digit. | ||
{{OutputEnd}} | {{OutputEnd}} | ||
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* [[_BIT]], [[&B]], [[_BYTE]] | * [[_BIT]], [[&B]], [[_BYTE]] | ||
* [[AND]], [[XOR]], [[OR]] | * [[AND]], [[XOR]], [[OR]] | ||
* [[AND (boolean)]], [[XOR (boolean)]], [[OR (boolean)]] | |||
* [[_ANDALSO]], [[_ORELSE]] | |||
* [[Binary]], [[Boolean]] | * [[Binary]], [[Boolean]] | ||
* [[Mathematical Operations]] | * [[Mathematical Operations]] | ||
Latest revision as of 10:14, 1 May 2024
_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
- _BIT, &B, _BYTE
- AND, XOR, OR
- AND (boolean), XOR (boolean), OR (boolean)
- _ANDALSO, _ORELSE
- Binary, Boolean
- Mathematical Operations