Re: [NTG-context] format float numbers in luatex

2009-10-26 Thread Otared Kavian 

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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Re: [NTG-context] format float numbers in luatex

2009-10-25 Thread Wolfgang Schuster 


Am 24.10.2009 um 18:59 schrieb batela:


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


\ctxlua{text.sprint(string.format(0.3\%f,sqrt(2)))}

or

\ctxlua{text.sprint(string.format(0.3\letterpercent f,sqrt(2)))}

Wolfgang

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