Newbie if statement qestion

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Hello,

Can someone tell me why the following statement does not work?

if(Bid == SellOpenPrice)


For some reason it returns false most of the time when it is true.

Thank you in advance

[Ray]

"Can someone tell me why the following statement does not work?"

Because they are not equal despite your protestations.

Comparing equality of doubles is a known problem because of the way doubles are represented in binary.

When you get stuck, you can change to something like:

if(MathAbs(Bid - SellOpenPrice) < .00001)

Or...

Rosh 2007.05.16 12:13

Use function from Stdlib.mq4

//+------------------------------------------------------------------+
//| right comparison of 2 doubles                                    |
//+------------------------------------------------------------------+
bool CompareDoubles(double number1,double number2)
  {
   if(NormalizeDouble(number1-number2,8)==0) return(true);
   else return(false);
  }

[[Deleted]]

phy:

"Can someone tell me why the following statement does not work?"

Because they are not equal despite your protestations.

Comparing equality of doubles is a known problem because of the way doubles are represented in binary.

When you get stuck, you can change to something like:

if(MathAbs(Bid - SellOpenPrice) < .00001)

Or...

Rosh 2007.05.16 12:13

Use function from Stdlib.mq4

//+------------------------------------------------------------------+
//| right comparison of 2 doubles                                    |
//+------------------------------------------------------------------+
bool CompareDoubles(double number1,double number2)
  {
   if(NormalizeDouble(number1-number2,8)==0) return(true);
   else return(false);
  }

Thanks Phy. I will give it try.