Trying to calculate lots using NormalizeDouble

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nestlee65
12
nestlee65  

Need help trying to cut off the digits after the 2 digits after the decimal point.

The original result is 0.01526

I used this code:

double mxlots1 = NormalizeDouble((actfrmargin1*Leverage),2)

The result is 0.02 because NormalizeDouble rounded it off to the nearest 2 digits.

I need this to result in 0.01 because I don't have enough money in my account to do 0.02 lots.

Is there another function that will just cut off after the first 2 digits after the decimal point, without rounding it off to 0.02?

Pierre

Seng Joo Thio
748
Seng Joo Thio  
nestlee65:

Need help trying to cut off the digits after the 2 digits after the decimal point.

The original result is 0.01526

I used this code:

double mxlots1 = NormalizeDouble((actfrmargin1*Leverage),2)

The result is 0.02 because NormalizeDouble rounded it off to the nearest 2 digits.

I need this to result in 0.01 because I don't have enough money in my account to do 0.02 lots.

Is there another function that will just cut off after the first 2 digits after the decimal point, without rounding it off to 0.02?

Pierre

How about this?

double mxlots1 = MathFloor(actfrmargin1*Leverage*100)/100
nestlee65
12
nestlee65  
Seng Joo Thio:

How about this?

Yes it works great now. 

Success to all!!

Pierre

William Roeder
19164
William Roeder  
If you are worried about margin and leverage, you are not controlling your risk. Never risk more than a small percentage of your account, certainly less than 2% per trade, 6% total.
  1. In code (MT4): Risk depends on your initial stop loss, lot size, and the value of the pair. It does not depend on margin and leverage.
    1. You place the stop where it needs to be - where the reason for the trade is no longer valid. E.g. trading a support bounce the stop goes below the support.
    2. AccountBalance * percent/100 = RISK = OrderLots * (|OrderOpenPrice - OrderStopLoss| * DeltaPerLot + CommissionPerLot) (Note OOP-OSL includes the spread, and DeltaPerLot is usually around $10/pip but it takes account of the exchange rates of the pair vs. your account currency.)
    3. Do NOT use TickValue by itself - DeltaPerLot and verify that MODE_TICKVALUE is returning a value in your deposit currency, as promised by the documentation, or whether it is returning a value in the instrument's base currency.
                MODE_TICKVALUE is not reliable on non-fx instruments with many brokers.
    4. You must normalize lots properly and check against min and max.
    5. You must also check FreeMargin to avoid stop out

    Most pairs are worth about $10 per PIP. A $5 risk with a (very small) 5 PIP SL is $5/$10/5 or 0.1 Lots maximum.

  2. Use a GUI EA like mine (for MT4): Indicators: 'Money Manager Graphic Tool' indicator by 'takycard' Forum - Page 6
nestlee65
12
nestlee65  

I have been trading for 13 years and blown 6 margin calls, so I have learned my lessons and I know what I'm doing. But thanks for your input.

Success to all!

Pierre

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