\si seems to be not showing decimal points, unless I specifically specify \num.
\documentclass[12pt]{report}
\usepackage{siunitx}
\begin{document}
\si{12.5\milli\gram}
\si{\num{12.5}\milli\gram}
\end{document}
Is this expected behavior?
3
6
The command \si{units} is for units only. You have to use the \SI{number}{units} for what you want to do.
\SI{12.5}{\milli\gram}is what you want. The\sicommand is for units and treats.as a separator (inherited from older packages in the area). – Joseph Wright♦ Dec 2 '16 at 15:52