[ Arithmetic | The ECLiPSe Built-In Predicates | Reference Manual | Alphabetic Index ]

breal_min(+Number, -Result)

Extracts the lower floating point bound of Number
A number.
A variable or float.


This predicate is used by the ECLiPSe compiler to expand evaluable arithmetic expressions. So a call to breal_min(Number, Result) is equivalent to
    Result is breal_min(Number).
A bounded real is a real number represented by a lower and upper bound in floating point format. This predicate extracts the lower bound and unifies it with Result. If Number is not a bounded real, the result returned is equivalent to converting it to a bounded real first.

Modes and Determinism


(4) instantiation fault
Number is not instantiated
(5) type error
Number is a not a number.
(5) type error
Result is neither a variable nor a float.


      ?- breal_min(0.99__1.01, X).
      X = 0.99

      ?- breal_min(1, X).
      X = 1.0

      ?- breal_min(1.0, X).
      X = 1.0

      ?- breal_min(1_10, X).
      X = 0.099999999999999992

      ?- breal_min("a", Z).
      type error in breal_min("a", Z)

      ?- breal_min(2 + 4, Z).
      type error in breal_min(2 + 4, Z)

See Also

breal_max / 2, breal / 1, breal / 2, breal_bounds / 3, breal_from_bounds / 3, is / 2