IF-THEN-ELSE

• Syntax:

  object_name = IF ([condition]) THEN [expr_1] ELSE [expr_2];
  

• Description:

  Depending on the result of the condition, the object is set equal to the value of "expr_1" or "expr_2". The use of nested IF-THEN structures is allowed. In the condition statement the use of logic operators (e.g. the and-operator && or the or-operator ||) is allowed.

  Example 1:

  state.Var =
  IF (state.V < parameters.V_Max) && (parameters.Q_Pump > state.Q_In)
  THEN state.Q1
  ELSE
    IF (state.Q_In < parameters.Q_Pump)
    THEN state.Q2
    ELSE state.Q3;
  

  Depending on the condition of the two IF statements the object "Var" is set equal to object "Q1", "Q2" or "Q3".

  Example 2:

  state.tp = IF (state.x > 10) THEN 5 ELSE 6;
  

  If the variable "state.x" is greater than "10" the variable "state.tp" gets the value "5", else "state.tp" gets the value "6".