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fix(+Number, -Result)

Unifies the integer part of Number with Result (Truncation towards zero).
A number.
A variable or integer.


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

This function is deprecated. For clearer code, please use

    Result is integer(truncate(Number)).

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

Modes and Determinism


(4) instantiation fault
Number is not instantiated (non-coroutining mode only).
(5) type error
Number is of type breal.
(5) type error
Result is a number but not an integer.
(24) number expected
Number is not of a numeric type.
(24) number expected
Result is neither a number nor a variable.


      fix(1.5, 1).
      fix(-6.4, -6).
      fix(1, 0).
      fix(A, 6.0).                 (Error 4).
      fix(0.0, 0.0).               (Error 5).
      fix(4 + 2.3, 6).             (Error 24).
      fix(1, r).                   (Error 24).

See Also

is / 2, integer / 2, truncate / 2, floor / 2, ceiling / 2, round / 2