Booleans, Logical Operators, and Relational Operators
Logical Operators are used to connect two or more expressions into compound expressions yielding TRUE or FALSE Boolean values.
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Often used to create an expression that controls program flow or that modifies a calculation performed within an editable field.
Logical Operators
Logical operators supported by LabMaestro are:
NOT, denoted by !
EQUAL, denoted by ==
NOT EQUAL, denoted by !=
Truth Table
x | y | !x | x == y | x != y |
---|---|---|---|---|
FALSE | FALSE | TRUE | TRUE | FALSE |
FALSE | TRUE | TRUE | FALSE | TRUE |
TRUE | FALSE | FALSE | FALSE | TRUE |
TRUE | TRUE | FALSE | TRUE | FALSE |
Example 1
You can use a Boolean as part of an equation.
TRUE and expressions evaluated to TRUE will be interpreted as 1.
FALSE and expressions evaluated to FALSE will be interpreted as 0.
=*1+18/2*FALSE)*100
You can also combine combine Booleans with logical operators.
Try out the following expressions:
=(1+18/2*(FALSE==TRUE))*100
=(1+18/2*(TRUE==TRUE))*100
=(1+18/2*(FALSE==FALSE))*100
=(1+18/2*(FALSE!=TRUE))*100
Relational Operators
Relational operators supported by LabMaestro are:
OR, which checks if either of the value evaluates to true
BITWISEOR, which returns the value of the OR operation on each bits individually
AND, which checks if both values evaluate to true
BITWISEAND, which returns the value of the AND operation on each bits individually
>, which checks if the left operand is greater than the right one
>=, which checks if the left operand is greater or equal than the right one
<, which checks if the left operand is smaller than the right one
<=, which checks if the left operand is smaller or equal than the right one
Example 2
You can use a logical operator to control values of certain properties.
=(Var1 > Var2)*100 // Gives 100 when Var1 > Var2
=(Var1 OR Var2) // Gives 1 if Var1 or Var2 evaluates to TRUE
Example 3
You can combine logical operators:
=(Var1 OR Var2) AND (Var3 AND Var4)