[Gambas-user] Bug in gb2 and gb3 in float

[Benoît Minisini]

> Hi!
> 
> I sent isolate program to test the error.
> 
> execute the program and follow this steps:
> 
> 1 - Click in "Cheque" button
>      Using the mouse click in "Valor Cheque" textbox
>      type 20000 and press tab key
> 
>      The Resta show 5123,56
> 
> 2 - click in button "Lançar"
> 
> 3 - Click in "Dinheiro" button
>      Using the mouse click in "Valor Dinheiro" textbox
>      type 5123,56 and press key tab
> 
> The error is.
> 
> Resta = 5123,56 (float)
> mskVALOR = 5123,56
> The breakpoint in 162
> in debug window:
>        ? vrresta  -> show(5123,56)
>        ? tmpvalor -> show(5123,56)
>        ? vrresta = tmpvalor ->show(FALSE)
> PRESS Shift+F8 to continue to next line
> 
> Again in debug windo type:
> ? vrResta
> 9,094947017729E-13
> 
> ????????????
> 
> I'm use fc13, fc14 and ubuntu 10.10 in my computer for tests.
> 
> Reguards,
> 
> Wellington

I don't see a bug there, just a floating-point number rounding error.

You can see it by typing '?Frac(25123,56)'

Why? Because 0.56 cannot be written in binary, and floating point numbers are 
stored in binary.

Regards,

-- 
Benoît Minisini