This is just an oddity. I use siuniutx to format currencies (with some spacing every three digits, and to 2 decimals irrespective of input). However the prefix does not like the usual \pounds symbol (converting this to $). A straight £ works fine. I just wondered why this is the case.
\documentclass[a4paper,12pt]{article}
\usepackage{fontspec}
\usepackage{libertine}
\usepackage{siunitx}
\begin{document}
The \pounds\ pounds macro behaves as expected
And this is \pounds40434.5345
The dollar prefix works fine: \SI[round-precision=2,round-mode=places,round-integer-to-decimal]{34324}[\$]{}
But the pounds prefix is imperialistic: \SI[round-precision=2,round-mode=places,round-integer-to-decimal]{34324}[\pounds]{}
But straight pound sign is ok: \SI[round-precision=2,round-mode=places,round-integer-to-decimal]{34324}[£]{}
\end{document}
Best Answer
For historical reasons due to the fact that usually the
\mathrm
font is OT1 encoded, the command\mathsterling
does\mathit{\mathchar"7024}}
(that is it uses the dollar sign, which in the italic OT1 font is a pound sign).Fix the wrong definition.