[ Arithmetic | Reference Manual | Alphabetic Index ]

max(+Vector, -Result)

Evaluates the the arithmetic expressions in Vector and unifies their maximum with Result.
A list, array or vector expression.
Output: number.


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

Vector must be a non-empty list, array or collection expression (as accepted by eval_to_list/2). The elements of Vector must be numbers, and Result is the maximum of these numbers (converted to the widest type of the vector elements).

In coroutining mode, if the list is only partly instantiated, the predicate delays until the list is complete.

Modes and Determinism


This predicate is sensitive to its module context (tool predicate, see @/2).


(4) instantiation fault
Vector is insufficiently instantiated (non-coroutining mode only).
(5) type error
Vecotr is not a list, array, or vector expression.


      X is max([1,2,3]).                 % gives X = 3
      X is max([1,2.0,3]).               % gives X = 3.0

      X is max([](1,2,3)).               % gives X = 3

      A=[](4,5,6,7), X is max(A[2..3]).  % gives X = 6

      X is max([]).                      % type error

See Also

is / 2, max / 3, min / 2, eval_to_list / 2