I want a command \ca
which takes a simple arithmetic calculation as an argument and returns the result with proper decimal places. Additionally I want an boolean argument which decides if only the result is printed or the whole calculation.
For example
\ca{8.12 - 2.2 + 1}
should just print 6.92.
or
\ca[t]{8.12 - 2.2 + 1}
should print 8.12 - 2.2 + 1 = 6.92
Following the question How can I sum two values and store the result in other variable? I did this:
\documentclass{article}
\usepackage[nomessages]{fp}% http://ctan.org/pkg/fp
\usepackage{ifthen}
\newcommand{\ca}[2][f]{
\FPeval{\result}{clip(#2)}
\ifthenelse{\equal{#1}{t}}{
$#2= \result$}
{
\result
}
}
\begin{document}
\ca[t]{3*(2.2 + 2.3)}
\ca{2.5 + 2.78}
\end{document}
Is it possible to to the same such that the german comma notation is used in what is displayed (i.e. 8,2 instead of 8.2) and in the case the calculation is printed that * is printed as \dcot
.