Re: format float numbers in luatex

[Otared Kavian <otared@gmail.com>]

Hi Jorge,

Regarding your first question try this:

\starttext

The square root of 2 is \ctxlua{tex.print(math.sqrt(2))}\dots, but  
usually the default value
\ctxlua{tex.print(math.floor(1000*math.sqrt(2))/1000)}
is considered to be a good approximation.

\stoptext

(There is also math.ceil)

Best regards: OK
On 24 oct. 2009, at 18:59, batela wrote:

>
> Dear Sirs,
>
> I'm looking a way to format float numbers. For example \ctxlua 
> {text.print(sqrt(2))} give me 1.41421356237309504880 but i want 1.414.
>
> Is there a way to format real numbers.
>
> Note: I had tried  \ctxlua{a = sqrt(a) ; aformat = string.format 
> ("0.3%f", a) ; text.print(aformat)}
>
> but that don't work because the  % character
>
> thanks a lot
>
> Have a nice day
>
> jorge
>
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If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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