Logical Operators

You use the logical operators And, Or, Xor, Eqv, and Imp to perform two kinds of operations:

• Bitwise

  Compares the bits in the binary representation of two numeric values and returns a new number derived from that comparison.

  For example:

  ' Calculate the logical product of binary 10 and 11
  ' and display the result in binary representation.
  Print Bin$(2 And 3)
  ' Output: 10

• Boolean

  Tests the truth value of a two-operand expression and returns a value of True (-1), False (0), or NULL. LotusScript® compares the bits in the binary representation of the truth values for each operand and returns a value derived from that comparison.

  For example:

  Dim anInt% As Integer
  anInt% = 5
  Print (anInt% > 2) And (anInt% < 10)  
  ' Both operands are True.
  ' Output: True
  Print CInt((anInt% > 2) And (anInt% < 10))
  ' Output: True
  Print CInt(True And True)
  ' Output: True

You use the logical operator Not to perform the same sorts of operations on expressions consisting of a single operand. Not reverses the values of the bits in the binary representation of its operand.

For example:

Print Bin$(Not 3)
' Output: 11111111 11111111 11111111 11111100
Print Bin$(Not False)
' Output: 11111111 11111111 11111111 11111111
Print (Not True)
' Output: 0