/src/main/java/net/finmath/functions/BarrierOptions.java
final int phi = isCall ? +phi : -phi;
final int phi = isCall ? +1 : -1;
double optionMaturity, double optionStrike, boolean isCall, double rebate, double barrierValue, BarrierType barrierType) { <extra_id_0> int eta = 0; switch(barrierType) { case UP_IN: eta = -1; break; case DOWN_IN: