%%
%% The LaTeX Companion, 3ed
%%
%% Example 3-3-31 on page I-174 in "Customizing numerical data representation".
%%
%% 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}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{siunitx}
\newcommand\sample[1]{#1:\hfill \num{0.005}\hfill
  \num{0.0023}\hfill \num{-0.005}\hfill
  \num{-0.0023}\\[5pt]}
%StopShownPreambleCommands

\begin{document}
                              \sample{A}
\sisetup{round-mode=places}   \sample{B}
\sisetup{round-half=even}     \sample{C}
\sisetup{round-minimum=0.01}  \sample{D}
\end{document}