IfcSameValue

IfcSameValue

Definition from IAI: The function compares two numerical values and ensures that they are the same (with an epsilon precision factor).

HISTORY: New function in Release IFC2x Edition 2

EXPRESS specification:

FUNCTION IfcSameValue

  (Value1, Value2 : REAL; Epsilon : REAL)
  : LOGICAL ;
LOCAL
  ValidEps : REAL;
END_LOCAL;

-- In the function the following questionable ad-hoc value is used:
--                    0.00000001  for the default precision (1E-8)

  ValidEps := NVL(Epsilon, 0.00000001);
  RETURN ((Value1 + ValidEps > Value2) AND (Value1 < Value2 + ValidEps));

END_FUNCTION;