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\(+Number, -Result)

Evaluates the bitwise complement of Number and unifies the resulting value with Result.
Number
Integer.
Result
A variable or integer.

Description

This predicate is used by the ECLiPSe compiler to expand evaluable arithmetic expressions. So the call to \(Number, Result) is equivalent to
    Result is \Number
which should be preferred for portability.

This operation behaves as if operating on an unlimited length two's complement representation.

In coroutining mode, if Number is uninstantiated, the call to \/2 is delayed until this variable is instantiated.

Modes and Determinism

Exceptions

(4) instantiation fault
Number is not instantiated (non-coroutining mode only).
(5) type error
Number is a number but not an integer.
(24) number expected
Number is not of a numeric type.

Examples

Success:
      \(1, -2).
      \(5, Result).            (gives Result = -6)
      \(-6, Result).           (gives Result = 5)
Fail:
      \(1, 0).
      \(1, r).
Error:
      \(A, 6).                   (Error 4).
      \(0.0, 0.0).               (Error 5).
      \(4 + 2, -7).              (Error 24).



See Also

is / 2