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Mt4 coding == or =

  • #1
  • First Post: Apr 20, 2013 9:54am Apr 20, 2013 9:54am
Hello
How can I make 2 conditions equal one another in mt4.
I have tried = and ==

I cant get this code functioning. How do you make these 2 doubles return equal
Here is the code:

Inserted Code
 
bool  IsSuperFlat(int i) {
   if(!UseSuperSlope) return (true); 
   double p1_0 = iCustom(NULL, 1440, CustomIndicatorName_1, "Current time frame", 0, i);
   double p1_1 = iCustom(NULL, 1440, CustomIndicatorName_1, "Current time frame", 0, i+1);
   return (p1_0 == p1_1);

thanks
  • #2
  • Apr 20, 2013 10:40am Apr 20, 2013 10:40am
Don't use == to compare doubles. e.g. to test whether two doubles are within 1% of each other, use something like this:

Inserted Code
return ( MathAbs(p1_1/p1_0 - 1) < 0.01);
  • #3
  • Apr 20, 2013 3:29pm Apr 20, 2013 3:29pm
Quoting Finsia
Hello How can I make 2 conditions equal one another in mt4. I have tried = and == I cant get this code functioning. How do you make these 2 doubles return equal Here is the code: bool IsSuperFlat(int i) { if(!UseSuperSlope) return (true); double p1_0 = iCustom(NULL, 1440, CustomIndicatorName_1, "Current time frame", 0, i); double p1_1 = iCustom(NULL, 1440, CustomIndicatorName_1, "Current time frame", 0, i+1); return (p1_0 == p1_1); thanks
I started a thread about this on the mql4 forum, you shiuld read it: can price != price
20 pips a day isn't too much to ask . . .
  • #4
  • Last Post: Apr 20, 2013 4:41pm Apr 20, 2013 4:41pm
Actually if these are prices you should be normalizing them to 2 or 4 decimal places. Then you can compare them for equality.
In practice you would be testing them for >=, <=, >, or <, not equality.
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