SMP Gateway User Manual • 175
17.1.4.9 Logical Operators
Logical operators are used to combine the results of logical expressions such as comparisons.
You can use the following logical operators in expressions:
Operator Description
AND Evaluates to TRUE if the left and right operands are both TRUE.
OR Evaluates to TRUE if either the left or right operand is TRUE.
NOT Evaluates to TRUE if the value to the right is FALSE.
XOR Evaluates to TRUE if the left and right operands have different values.
EQV Evaluates to TRUE if the left and right operands have the same value.
17.1.4.10 Relational Operators
You can use the following relational operators in expressions:
Operator Description
< [Less than] Evaluates to TRUE if the left operand is less than the right operand.
> [Greater than] Evaluates to TRUE if the left operand is greater than the right operand.
<= [Less than or equal
to]
Evaluates to TRUE if the left operand is less than or equal to the right
operand.
>= [Greater than or equal
to]
Evaluates to TRUE if the left operand is greater than or equal to the right
operand.
= [Equal to] Evaluates to TRUE if the left operand is equal to the right operand.
!= [Not equal to] Evaluates to TRUE if the left operand is different from the right operand.
17.1.4.11 Constants and Variables
You can use the following built-in constants and pseudo-variables in expressions:
Operator Description
CurrentPoint [Point
value]
Represents the current value, i.e., the value of the logical point being
edited, just prior to its evaluation.
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