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%%
%% The LaTeX Companion, 3ed
%%
%% Example A-2-11 on page II-659 in "The L3 programming layer{} --- Computation support".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%
\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{183.0pt}
%StartShownPreambleCommands
\usepackage{color}
\newcommand\dice{\fpeval{randint(1,6)}}
%StopShownPreambleCommands
\begin{document}
\LaTeX{} can now compute:
\[ \frac{\sin (3.5)}{2} + 2\cdot 10^{-3} =
\mathcolor{blue}{\fpeval{sin(3.5)/2 + 2e-3}}
\]
A random number: $\fpeval{rand()}$ and six dice
rolls: \dice,\dice,\dice,\dice,\dice,\dice.
\end{document}
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