Question about lot multiplier

[Schumacher Drive]

Hi guys,

I need a help regarding the lot multiplier.

I've made a multiplier that follow step balance - so it increases first lot accordingly to the balance of the account.

However I have a problem setting up the multiplier.

So far I've found the ROUND UP option but it's not good, for example when you have a multiplier where you get 0.011 it will round up to the highest 0.02 instead of keeping it at 0.01 as i wanted.

Can someone assist me about this, how can i just ROUND the number in two decimals?

Thanks in advance!

[Busingye Tusasirwe]

Schumacher Drive:
Hi guys,

I need a help regarding the lot multiplier.

I've made a multiplier that follow step balance - so it increases first lot accordingly to the balance of the account.

However I have a problem setting up the multiplier.

So far I've found the ROUND UP option but it's not good, for example when you have a multiplier where you get 0.011 it will round up to the highest 0.02 instead of keeping it at 0.01 as i wanted.

Can someone assist me about this, how can i just ROUND the number in two decimals?

Thanks in advance!

Please use 

MathCeil() 

rather than 

MathRound()

[Fernando Carreiro]

Busingye Tusasirwe #: Please use rather than 

I suggest you read the OP's question again.

[Fernando Carreiro]

Schumacher Drive: I need a help regarding the lot multiplier. I've made a multiplier that follow step balance - so it increases first lot accordingly to the balance of the account. However I have a problem setting up the multiplier.

So far I've found the ROUND UP option but it's not good, for example when you have a multiplier where you get 0.011 it will round up to the highest 0.02 instead of keeping it at 0.01 as i wanted. Can someone assist me about this, how can i just ROUND the number in two decimals?

Please take the time to search and read the documentation before posting ...

• Documentation on MQL5: Math Functions

MathCeil	Returns integer numeric value closest from above
MathFloor	Returns integer numeric value closest from below
MathRound	Rounds of a value to the nearest integer

[Fernando Carreiro]

Here is an example using MathFloor, but in your case you should use MathRound instead ...

Forum on trading, automated trading systems and testing trading strategies

Round down double mql5

Fernando Carreiro, 2023.12.16 19:12

void OnStart() {
   double dbSeed  = 1.0,
          dbRatio = 1.5,
          dbStep  = 0.01;
   for( int i = 0; i < 10; i++ ) {
      PrintFormat( "Lots: %.2f (Value: %.6f)", MathFloor( dbSeed ) * dbStep, dbSeed );
      dbSeed *= dbRatio;
   };
};

Lots: 0.01 (Value: 1.000000)
Lots: 0.01 (Value: 1.500000)
Lots: 0.02 (Value: 2.250000)
Lots: 0.03 (Value: 3.375000)
Lots: 0.05 (Value: 5.062500)
Lots: 0.07 (Value: 7.593750)
Lots: 0.11 (Value: 11.390625)
Lots: 0.17 (Value: 17.085938)
Lots: 0.25 (Value: 25.628906)
Lots: 0.38 (Value: 38.443359)