What does it mean by , bool x=(a,b); ?

 

What does it mean by , bool x=(a,b); ? 

I am reading code . and i dont understand what's this about . a=true and b=false ? 

   if(CompareDoubles(sl,OrderStopLoss()) && 
      CompareDoubles(tp,OrderTakeProfit()))return true;

Thanks for answering 

 
Tsz Ho Chow:

What does it mean by , bool x=(a,b); ? 

I am reading code . and i dont understand what's this about . a=true and b=false ? 

Thanks for answering 

Compare Doubles implicitly returns true if the numbers are the same. How you should read this is if(true && true) return true