IMP

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The IMP logical operator converts the result of two comparative values and returns a bit result.


Syntax

result = firstValue IMP secondValue


Description

  • Returns a different result from AND, OR or XOR.
  • Evaluates if firstValue implies secondValue.
    • If firstValue is true then secondValue must also be true.
    • So if firstValue is true, and secondValue false, then the condition is false, otherwise it is true (see table below).


The results of the bitwise logical operations, where A and B are operands, and T and F indicate that a bit is set or not set:
Operands Operations
A B NOT B A AND B A OR B A XOR B A EQV B A IMP B
T T F T T F T T
T F T F T T F F
F T F F T T F T
F F T F F F T T
Relational Operations return negative one (-1, all bits set) and zero (0, no bits set) for true and false, respectively.
This allows relational tests to be inverted and combined using the bitwise logical operations.



See also



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