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%%
%% Ein Beispiel der DANTE-Edition
%%
%% 1. Auflage
%%
%%
%% Copyright (C) 2012 Herbert Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See http://www.latex-project.org/lppl.txt for details.
%%
%%
%% ====
% Show page(s) 1
%%
%%
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{121.16928pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{luacode}
\def\getVLength(#1,#2)(#3,#4){%
\directlua{tex.print(math.sqrt((#3-#1)^2+(#4-#2)^2))}\\
\luaexec{tex.print(string.format("\%.4f",%
(math.sqrt((#3-#1)^2+(#4-#2)^2))))}}
%StopShownPreambleCommands
\begin{document}
Negative Zahlen extra Klammern!\par
\getVLength((-1),(-2))(4,2)
\end{document}
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