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Section 8. Processing and Math Instructions

8-3

X The X variable is the value that will be added to the

PrecisionVariable. It may or may not be a high precision variable, depending

upon whether it has been declared as such in a previous AddPrecise or

MovePrecise instruction.

AND

Used to perform a logical conjunction on two expressions.

Syntax

result = expr1 And expr2

Remarks

If, and only if, both expressions evaluate True, result is True. If either

expression evaluates False, result is False. The following table illustrates how

result is determined:

If expr1 is And expr2 is The result is

True True True

True False False

False True False

False False False

The And operator also performs a bit-wise comparison of identically

positioned bits in two numeric expressions and sets the corresponding bit in

result according to the following truth table:

If bit in expr1 is And bit in expr2 is The result is

0 0 0

0 1 0

1 0 0

1 1 1

And Operator Example

The example assigns a value to Msg that depends on the value of variables A,

B, and C, assuming that no variable is a Null. If A = 10, B = 8, and C = 6,

both expressions evaluate True. Because both expressions are True, the And

expression is also True.

Dim A, B, C, Msg 'Declare variables.

A = 10: B = 8: C = 6 'Assign values.

If A > B And B > C Then 'Evaluate expressions.

Msg = True

Else

Msg = False

End If

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Campbell DSP4 Spezifikationen Seite 225