IMP

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 - see truth table below.
• 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

• Binary
• Boolean

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