I don't have account for Gambas wiki, can you grant it for me?
Maybe I would put some other snippets there too.
Jussi
On 25 August 2012 04:06, Sebi <sebi...@gmail.com> wrote:
> Great workaround!!
>
> I created a snippets page on the wiki some time ago, you will find a link
> on the main page. Feel free to add it there!
> -----Original Message-----
> From: Jussi Lahtinen <jussi.lahti...@gmail.com>
> Date: Sat, 25 Aug 2012 03:59:58
> To: Gambas mailing list for users.<Gambas-user@lists.sourceforge.net>
> Reply-To: mailing list for gambas users <gambas-user@lists.sourceforge.net
> >
> Subject: [Gambas-user] An arbitrary precision calculator class
>
> Almost forgot... Some weeks(?) ago I noticed that people tend have problems
> with floating point precision (problem with all general purpose languages).
> So, I'll share my quick & dirty solution.
>
> Short but useful code if you need very precise numbers for math, but speed
> is not crucial.
> I personally use it for prototyping.
>
>
> This is for class (name it BcClass):
>
> Private hPro As Process
>
> Public Function _call(sFunc As String) As String
>
> Dim ss As String
>
> Print #hPro, sFunc
> Input #hPro, ss
>
> Return ss
>
> End
>
> Public Sub _new(Optional iPrecision As Integer = 100)
>
> hPro = Exec ["env", "BC_LINE_LENGTH=0", "bc"] For Read Write
>
> Print #hPro, "scale=" & CStr(iPrecision)
>
> End
>
> Public Sub Stop()
>
> hPro.Close()
>
> End
>
>
>
> This is how you use it:
>
> Dim Calculate As New BcClass(8)
>
> Print Calculate("1+2/7^2.4")
>
> 1.04081632
>
> And when all calculations are done, end your code with "Calculate.Stop()".
>
>
> BTW. Is there some place for code snippets?
>
>
> Jussi
>
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Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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