# Difference between two values of MA

Hi everybody,

I just want to make that seem to be a simple calculation to obtain the difference beween two MA decimal Values.

I want to substract like this : First Value - Second Value

Here is my code:

```double CurFastMAValue=NormalizeDouble(fast_ma_buffer[0],6);
double LastFastMAValue=NormalizeDouble(fast_ma_buffer[1],6);

double CurFastMAAngle=NormalizeDouble((CurFastMAValue-LastFastMAValue),6);

```

When i print the results in a "comment" function i have :

CurFastMAValue=1.101912

LastFastMAValue=1.101919

CurFastMAAngle=-7e-06

I would prefer to have : CurFastMAAngle=-0.000007 wich is much more readable. I can do this with "doubletostring" but it is only for printing on screen.

And finaly I wonder if the current rating allows a comparison with a reference number like this :

if(CurFastMAAngle>-0.000010){......}

Can someone give me an answer please ?

chpeller: I would prefer to have : CurFastMAAngle=-0.000007 wich is much more readable. I can do this with "doubletostring" but it is only for printing on screen.
1. 0.00007 equals 7e-06 There is no difference. You can't read doubles, only text.
2. You used NormalizeDouble, It's use is usually wrong, as it is in your case.
1. Floating point has infinite number of decimals, it's your not understanding floating point and that some numbers can't be represented exactly. (like 1/10.)
Double-precision floating-point format - Wikipedia, the free encyclopedia

2. Print out your values to the precision you want with DoubleToString - Conversion Functions - MQL4 Reference.

3. SL/TP (stops) need to be normalized to tick size (not Point) — code fails on metals. (On 5Digit Broker Stops are only allowed to be placed on full pip values. How to find out in mql? - MQL4 programming forum) and abide by the limits Requirements and Limitations in Making Trades - Appendixes - MQL4 Tutorial and that requires understanding floating point equality Can price != price ? - MQL4 programming forum

4. Open price for pending orders need to be adjusted. On Currencies, Point == TickSize, so you will get the same answer, but it won't work on Metals. So do it right: Trailing Bar Entry EA - MQL4 programming forum or Bid/Ask: (No Need) to use NormalizeDouble in OrderSend - MQL4 programming forum

5. Lot size must also be adjusted to a multiple of LotStep and check against min and max. If that is not a power of 1/10 then NormalizeDouble is wrong. Do it right.

6. MathRound() and NormalizeDouble() are rounding in a different way. Make it explicit.
MT4:NormalizeDouble - MQL5 programming forum
How to Normalize - Expert Advisors and Automated Trading - MQL5 programming forum

7. Prices you get from the terminal are already normalized.

William Roeder:
1. 0.00007 equals 7e-06 There is no difference. You can't read doubles, only text.
2. You used NormalizeDouble, It's use is usually wrong, as it is in your case.
1. Floating point has infinite number of decimals, it's your not understanding floating point and that some numbers can't be represented exactly. (like 1/10.)
Double-precision floating-point format - Wikipedia, the free encyclopedia

2. Print out your values to the precision you want with DoubleToString - Conversion Functions - MQL4 Reference.

3. SL/TP (stops) need to be normalized to tick size (not Point) — code fails on metals. (On 5Digit Broker Stops are only allowed to be placed on full pip values. How to find out in mql? - MQL4 programming forum) and abide by the limits Requirements and Limitations in Making Trades - Appendixes - MQL4 Tutorial and that requires understanding floating point equality Can price != price ? - MQL4 programming forum

4. Open price for pending orders need to be adjusted. On Currencies, Point == TickSize, so you will get the same answer, but it won't work on Metals. So do it right: Trailing Bar Entry EA - MQL4 programming forum or Bid/Ask: (No Need) to use NormalizeDouble in OrderSend - MQL4 programming forum

5. Lot size must also be adjusted to a multiple of LotStep and check against min and max. If that is not a power of 1/10 then NormalizeDouble is wrong. Do it right.

6. MathRound() and NormalizeDouble() are rounding in a different way. Make it explicit.
MT4:NormalizeDouble - MQL5 programming forum
How to Normalize - Expert Advisors and Automated Trading - MQL5 programming forum

7. Prices you get from the terminal are already normalized.

Thank You for this

I forget to mention that i use MT5

Reason: