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\documentclass{article} | |
\usepackage{lipsum} | |
\usepackage{xparse} | |
\usepackage{pgfmath} | |
% defaults: | |
\newcommand*\skillingfactor{16} | |
\newcommand*\markfactor{6} | |
\newcommand\moneyadd[2]{% | |
\toskilling{#1}% | |
\edef\tmp{\skilling}% | |
\toskilling{#2}% | |
\pgfmathparse{\tmp + \skilling}% | |
\todms{\pgfmathresult}% | |
} | |
\newcommand\todms[1]{% | |
\pgfmathsetmacro\daler{div(#1, \skillingfactor * \markfactor)}\daler% | |
.% | |
\pgfmathsetmacro\mark{div(#1 - \skillingfactor * \markfactor * \daler, \skillingfactor)}\mark% | |
.% | |
\pgfmathsetmacro\skilling{int(#1 - \skillingfactor * \markfactor * \daler - \skillingfactor * \mark)}\skilling% | |
} | |
\makeatletter | |
\newcommand\dkm@toskilling[3]{% | |
\pgfmathsetmacro\skilling{int(#1 * \markfactor * \skillingfactor + #2 * \skillingfactor + #3)}% | |
} | |
\NewDocumentCommand\toskilling{ > {\SplitArgument { 2 } { . } } m }{% | |
\dkm@toskilling#1% | |
} | |
\makeatother | |
\begin{document} | |
With default markfactor 6: | |
\begingroup | |
\toskilling{1.2.3} \skilling{} = 1*6*16 + 2*16 + 3 = 96 + 32 + 3 = 131 | |
\toskilling{3.2.1} \skilling{} = 3*6*16 + 2*16 + 1 = 288 + 32 + 1 = 321 | |
\todms{400} = 4*6*16 + 1*16 + 0 = 384 + 16 = 4.1.0 | |
\todms{452} = \moneyadd{1.2.3}{3.2.1} = 452 = 384 + 64 + 2 = 4*6*16 + 4*16 + 2 = 4.4.4 | |
\endgroup | |
Resetting markfactor to 4: | |
\begingroup | |
\renewcommand*\markfactor{4} | |
\toskilling{2.0.0} \skilling{} = 2*4*16 + 0*16 + 0 = 128 | |
\toskilling{0.1.2} \skilling{} = 0*4*16 + 1*16 + 2 = 18 | |
\todms{241} = 3*4*16 + 3*16 + 1 = 192 + 48 + 1 = 241 | |
\todms{146} = \moneyadd{2.0.0}{0.1.2} = 146 = 128 + 16 + 2 = 2*4*16 + 1*16 + 2 = 2.1.2 | |
\endgroup | |
\end{document} |
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This turned into a full package; see https://www.ctan.org/pkg/non-decimal-units