public void update(Subject exp, EventOfInterest interest)
throws Failure
{
//Debug.print("ObserverFloatExpNotValue("+_exp+") "+interest);
FloatEvent event = (FloatEvent)interest;
double value = (event.min () + event.max ())/2;
if (FloatCalc.eq (value, _value)){
constrainer().fail("attempt to set a removed value "+value+" for "+exp);
}
}