Does anybody know, on an EA, how to get on a math operation

Dec 23, 2013 at 20:08
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8 Replies
會員從Jul 11, 2011開始   38帖子
Dec 23, 2013 at 20:08
Does anybody know, on an EA, how to get on a math operation ( substraction to be specific) only positive numbers?
I am running into the problem that, for example, when the open price less than the close price, and the open price is smaller, the result is negative. I need this result to be positive, on other words, I need to substract ALWAYS the bigger price from the smaller price. Again, if someone knows how to do this, and is willing to share, that would be great.
Thank you
To win you have to risk loss
forex_trader_136673
會員從Jun 28, 2013開始   852帖子
Dec 23, 2013 at 20:34
Multiply with -1

😄
pumpingmonkey
forex_trader_168526
會員從Dec 19, 2013開始   126帖子
Dec 23, 2013 at 21:10
double MathAbs( double value)
Returns the absolute value (modulus) of the specified numeric value.
Parameters:
value - Numeric value.

Sample:
  double dx=-3.141593, dy;
  // calc MathAbs
  dy=MathAbs(dx);
  Print('The absolute value of ',dx,' is ',dy);
  // Output: The absolute
 
pumpingmonkey
forex_trader_168526
會員從Dec 19, 2013開始   126帖子
Dec 23, 2013 at 21:37
ahuruglica posted:
Multiply with -1

😄

multiplying by negative one will only invert the negative or positive sign.

similar to doing a zero minus whatever your number is.

ie, if i have a variable X and i want to invert it...

x=0-x;

this will invert the sign, similar to multiplying by negative one.

the MathAbs function returns the absolute value of a signed number, whether it is positive or negative.

ie, xx=MathAbs(x);

happy coding.
會員從Nov 21, 2011開始   1718帖子
Dec 27, 2013 at 10:55
A= MathAbs(1.3800) = 1.3800
B= MathAbs(-1.3810) = 1.3810

So if A > B then A - B else B - A = 1.3810 - 1.3800 = 10 pips
會員從Jul 11, 2011開始   38帖子
Dec 27, 2013 at 23:31
Thanks to all for the answer. I do not think the multipling by -1 will do as this will only work if the result is negative, however, what is the result is positive? then, the multiplication's result would be negative
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會員從Jul 11, 2011開始   38帖子
Dec 27, 2013 at 23:31
Thank you, Crazytrader!
To win you have to risk loss
forex_trader_136673
會員從Jun 28, 2013開始   852帖子
Dec 28, 2013 at 12:08 (已編輯Dec 28, 2013 at 12:09)
It was a little joke cause it remembered me primary school, and it was a math solution for many mathematical problems.

But it can work:

if A-B<0 then (A-B)*-1
if A-B>=0 then A-B


cheers
會員從Jul 11, 2011開始   38帖子
Dec 29, 2013 at 03:29
Thank you ahuruglica
To win you have to risk loss
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