47 lines
1.8 KiB
TeX
47 lines
1.8 KiB
TeX
\NeedsTeXFormat{LaTeX2e}
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\ProvidesPackage{mkessler-faktor}[2021-09-06 - Faktor package]
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%%%%%%%%%%%%%%%%%%
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% Extension the faktor package for
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% - cofaktor command that provides A \ B notation
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% - scaling the / in the middle
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% - fine positioning of enumerator / denominator
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% This is essentially taken from the stackexchange question found at
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% https://tex.stackexchange.com/questions/27591/extending-the-faktor-package
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% and answered by 'Werner' (https://tex.stackexchange.com/users/5764/werner)
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%
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% This package only packages the corresponding answer and provides an analoguous way of a \cofactor command
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%Dependencies
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\RequirePackage{xparse}
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\RequirePackage{amssymb} % provides \diagup and \diagdown
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\RequirePackage{ifthen} % ifthenelse syntax
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\RequirePackage{mathtools}
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\DeclareDocumentCommand{\faktor}{s m O{0.5} m O{-0.5}}{% \newfaktor[*]{#2}[#3]{#4}[#5] -> #2/#4
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\setbox0=\hbox{\ensuremath{#2}}% Store numerator
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\setbox1=\hbox{\ensuremath{\diagup}}% Store slash /
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\setbox2=\hbox{\ensuremath{#4}}% Store denominator
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\raisebox{#3\ht1}{\usebox0}% Numerator
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\mkern-5mu\ifthenelse{\equal{#1}{\BooleanTrue}}% Slash /
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{\diagup}% regular \faktor slash
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{\rotatebox{-44}{\rule[#5\ht2]{0.4pt}{-#5\ht2+#3\ht0+\ht0}}}% tilted rule as a slash
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\mkern-4mu%
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\raisebox{#5\ht2}{\usebox2}% Denominator
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}
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\DeclareDocumentCommand{\cofaktor}{s m O{-0.5} m O{0.5}}{% \newfaktor[*]{#2}[#3]{#4}[#5] -> #2/#4
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\setbox0=\hbox{\ensuremath{#2}}% Store numerator
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\setbox1=\hbox{\ensuremath{\diagdown}}% Store slash /
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\setbox2=\hbox{\ensuremath{#4}}% Store denominator
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\raisebox{#3\ht1}{\usebox0}% Numerator
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\mkern-5mu\ifthenelse{\equal{#1}{\BooleanTrue}}% Slash /
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{\diagdown}% regular \faktor slash
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{\rotatebox{44}{\rule[-#5\ht2]{0.4pt}{#5\ht2-#3\ht0+\ht0}}}% tilted rule as a slash
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\mkern-4mu%
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\raisebox{#5\ht2}{\usebox2}% Denominator
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}
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