VBScript Reference Manual for InduSoft Web Studio

InduSoft Web Studio VBScript Reference Manual
Exponentiation Operator (^)
Description Raises a number to the power of an exponent
Usage result = number ^ exponent
Arguments result
Any numeric variable.
number
Any valid numeric expression
exponent
Any valid numeric expression.
Remarks number can be negative only if exponent is an integer value. When more than one exponentiation
is performed in a single expression, the ^ operator is evaluated as it is encountered from left to
right. If either number or exponent is a Null expression, result is also Null.
Example: Dim a
a = 2
a = a ^ 2 ‘ a now equal 4
a = 5 ^ 5 ‘ a is now 3,125
Imp Operator (Imp)
Description Performs a logical implication on two expressions
Usage result = expression1 Imp expression2
Arguments result
Any variable.
expression1
Any expression.
expression2
Any expression
Remarks The following table illustrates how result is determined:
If expression1 is And expression2 is Then result is
True True True
True False False
True Null Null
False True True
False False True
False Null True
Null True True
Null False Null
Null Null Null
The Imp operator performs a bitwise comparison of identically positioned bits in two numeric
expressions and sets the corresponding bit in result according to the following table:
If bit in expression1 is And bit in expression2 is Then result is
0 0 1
0 1 1
1 0 0
1 1 1
Example: Dim cond1, cond2, cond3
cond1 = True
cond2 = Null
cond3 = cond1 Imp cond2 ‘ cond3 is set to Null
Example MyResult = 0 Imp 0 ‘ Returns 1
MyResult = 1 Imp 0 ‘ Returns 0
MyResult = 1 Imp 1 ‘ Returns 1
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