Bug? Numberformat2 decimal places

[Andrew (Digitwell)]

In iOS
the following code returns a string containing "1000", in Android the code returns a string, containing "1000.0"

I think that this is a bug.

           Private n As Double = 1000
            private s as string =  NumberFormat2(n,0,2,0,False)
            log(s)

 

[klaus]

Very strange!
Here it displays 1000!

 

[emexes]

In iOS the following code returns a string containing "1000", in Android the code returns a string, containing "1000.0"

I think that this is a bug.

           Private n As Double = 1000
            private s as string =  NumberFormat2(n,0,2,0,False)
            log(s)

iOS looks correct. Minimum decimal fraction places is 0.

Perhaps Android is splitting the difference, and giving you the average of 0 and 2 decimal fraction places.

 

[Andrew (Digitwell)]

@emexes Yes, iOS is correct.

@klaus, I am running OpenJdk 11.0.1. Is that the same as you? I wonder if it is some strange precision problem.

I only noticied it because, I put this post up, https://www.b4x.com/android/forum/t...credit-card-and-apple-pay.124141/#post-775333, and it wasn't working on Android as STRIPE was rejecting the "1000.0" as the number.

In the end, I just frigged it by adding:

        else If checkfornumber(o) Then
            #if B4a
            Private n As Int = o
            #else if B4I
            Private n As Double = o
            #End If
            s = s & prevprefix & su.EncodeUrl(actprefix & "["&ky & "]","UTF8")&"="& NumberFormat2(n,0,0,0,False)
        Else

in the function convertsubmaptoUrlEncode in StripeClass

 

[Erel]

The java version isn't relevant.
This is not a bug as 1000.0 meets the set minimum and maximum values.

Best to use B4XFormatter. It will work exactly the same in all platforms:

Dim f As B4XFormatter
f.Initialize
f.GetDefaultFormat.MaximumFractions = 2
f.GetDefaultFormat.MinimumFractions = 0
f.GetDefaultFormat.GroupingCharacter = ""
Log(f.Format(n))

 

[Andrew (Digitwell)]

I didn't realise that Numberformat2 could do that. I assumed that it would give the minimum possible format.

I tend to use Numberformat2 quite a lot so I will write a little function to take the same parameters and call B4XFormatter instead.

 

[klaus]

This is not a bug as 1000.0 meets the set minimum and maximum values.

I would expect, that for 1000 with MiniumFraction = 0, the result beeing 1000 and not 1000.0.
And why not 1000.00 which respects also the requirements?

I am running OpenJdk 11.0.1. Is that the same as you?

I use Java 11.0.1 too.

 

[Erel]

I would expect, that for 1000 with MiniumFraction = 0, the result beeing 1000 and not 1000.0.
And why not 1000.00 which respects also the requirements?

This happens in the native API. I guess that the default string representation of 1000 is 1000.0 and it doesn't modify it if it meets the requirements.

 

[klaus]

Anyway, as written in post #2, on my device it displays OK.
I tested with n = 1000.001 and the display is 1000, as expected by me.
So am astonished that it is wrong for Andrew.

 

[emexes]

This is not a bug as 1000.0 meets the set minimum and maximum values.

giving you the average of 0 and 2 decimal fraction places.

I can't fault your explanation but I like mine better. ☮