IfcSameValue

Definition from IAI: The function compares two numerical values and ensures that they are the same (with an epsilon precision factor).
In the function the following questionable ad-hoc value is used:
0.000001 for the default precision (1E-6)

HISTORY: New function in Release IFC2x Edition 2

EXPRESS specification:

FUNCTION IfcSameValue

(Value1, Value2 : REAL; Epsilon : REAL)
: LOGICAL;
  LOCAL
    ValidEps    : REAL;
    DefaultEps  : REAL := 0.000001;
  END_LOCAL;

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

END_FUNCTION;