On Fri, Jul 23, 2010 at 10:38 PM, luigi scarso wrote:

On Fri, Jul 23, 2010 at 10:25 PM, Vnpenguin wrote:

...

Hi, Here is my test: =================================================== \setuppapersize[A4][A4] \usetypescript[postscript] \setupbodyfont[palatino,12pt]

\starttext \startformula K = \frac{\sigma_1}{\sigma_2} = \frac{355}{14}= \ctxlua{tex.print(355/14)} \stopformula \stoptext ===================================================

It works well and give me result = 25,357142857143. In order to obtain 2 decimal number I tried:

\startformula K = \frac{\sigma_1}{\sigma_2} = \frac{355}{14}= \ctxlua{tex.printf("%0.2f",355/14)} \stopformula

But it does not work. Here is the error:

tex.printf("\doplaceformulanumber \stopdisplaymath \global \let \gdef \ETC. ! File ended while scanning text of \zerocount. <inserted text>                } <*> ./test-lua.tex ?

Another try:

\startformula K = \frac{\sigma_1}{\sigma_2} = \frac{355}{14}= \ctxlua{tex.print(string.format("%0.2f",355/14))} \stopformula

gives me the same error.

So is there really a function printf() in LuaTeX engine ?

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hm, what about  tex.sprint(tex.ctxcatcodes,string.format("\%.2f",355/14) sorry  tex.sprint(tex.ctxcatcodes,string.format("\%.2f",355/14))

-- luigi

On 23-7-2010 10:53, Vnpenguin wrote:

\startformula

...

...

...

K = \frac{\sigma_1}{\sigma_2} = \frac{355}{14}= \ctxlua{tex.print(string.format("%0.2f",355/14))} \stopformula

or \ctxlua{context("\letterpercent0.2f",355/14)} we can consider adding \let\pct\letterpercent but nice is: \ctxluacode{context("%0.2f",355/14)} i'll add this but keep in mind that this will only work in the text stream, not in macro definitions or as arguments Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------

On 23-7-2010 11:29, Vnpenguin wrote:

\clxluacode{contextf()} ? (like print()& printf())

No, as context() is already built in for quite a while and I don't want to polute the global namespace any more that it already is. Also, there is no printf in lua and I see no reason to mimick c calls (for me printf does not feel more natural). Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------