%% ---------------------------------------------------------------- %% smartunits --- A latex package that implements automatic conversions %% between certain metric and Imperial units. %% E-mail: andrew.mathas@gmail.com %% Released under the LaTeX Project Public License v1.3c or later %% See http://www.latex-project.org/lppl.txt %% ---------------------------------------------------------------- % http://tex.stackexchange.com/questions/241169/is-it-possible-in-latex-to-print-all-numbers-between-imperial-and-metric/241179#241179 \NeedsTeXFormat{LaTeX2e} \def\smart@version{Version 1.2 -- 2016/02/05} \ProvidesPackage{smartunits}[2016/02/05 \smart@version\space- Smart conversion between metric and Imperial units] \RequirePackage{siunitx,pgfmath,pgfkeys} % a global pgfkeyssetvalue from Martin Scharrer's answer to http://tex.stackexchange.com/questions/15204 \newcommand{\pgfkeysgsetvalue}[2]{\pgfkeys@temptoks{#2}\expandafter\xdef\csname pgfk@#1\endcsname{\the\pgfkeys@temptoks}} % a shorthand for extracting key values from /SmartUnit \newcommand\smart@val[1]{\pgfkeysvalueof{/SmartUnit/#1}} % the pgfkey family for smart units \pgfkeys{/SmartUnit/.is family,/SmartUnit,% %%%% /SmartUnit/unit keys are implicitly initialised through the %%%% following. As a bonus this allows us to use \pgfkeysifdefined below. .unknown/.code={\pgfkeyssetvalue{\pgfkeyscurrentpath/\pgfkeyscurrentname}{#1}},% %%%% /SmartUnit/convert is used to determine which "smart unit" to print %%%% printunit --> output --> injects the code to print the current printunit/.code={\pgfkeysifdefined{/SmartUnit/convert}{\pgfkeys{/SmartUnit/output/\smart@val{format}}}{}},% output/metric/.code={\pgfkeys{/SmartUnit/\smart@val{convert}/metric}},% output/imperial/.code={\pgfkeys{/SmartUnit/\smart@val{convert}/imperial}},% output/metric imperial/.code={\pgfkeys{/SmartUnit/\smart@val{convert}/metric}\space(\pgfkeys{/SmartUnit/\smart@val{convert}/imperial})},% output/imperial metric/.code={\pgfkeys{/SmartUnit/\smart@val{convert}/imperial}\space(\pgfkeys{/SmartUnit/\smart@val{convert}/metric})},% %%%% global flags for controlling when metric and imperial units are printed format/.initial=metric,% metric/.code={\pgfkeysgsetvalue{/SmartUnit/format}{metric}},% imperial/.code={\pgfkeysgsetvalue{/SmartUnit/format}{imperial}},% metric imperial/.code={\pgfkeysgsetvalue{/SmartUnit/format}{metric imperial}},% imperial metric/.code={\pgfkeysgsetvalue{/SmartUnit/format}{imperial metric}},% %%%% allow for both UK and US Imperial units system/.initial=usa,% for purely demographic reasons usa/.style={system=usa},% uk/.style={system=uk},% %%% for local changes to the siunitx precision figures/.code={\sisetup{round-mode=figures, round-precision=#1}}, places/.code={\sisetup{round-mode=places, round-precision=#1}}, %%%%%%%%%%%%%%%%%%%% conversion routines %%%%%%%%%%%%%%%%%%%%%%%%%%%% % Generic case: #1 = (#2+#3)*#4 + #5 where #6 is the name of the unit conversion/.code n args={6}{%{#1= to, #2= from, #3=pre-offset, #4=multiplier, #5=post-offset, #6= symbol} \pgfkeysifdefined{/SmartUnit/unit #1}{\SI{\smart@val{unit #1}}{#6}}{\pgfmathparse{(\smart@val{unit #2}+#3)*#4+#5}\SI{\pgfmathresult}{#6}}% },% %%%% convert=distance: km <-> miles %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% km/.style={convert=distance, unit km=#1},% mi/.style={convert=distance, unit miles=#1},% miles/.style={convert=distance, unit miles=#1},% distance/metric/.style={/SmartUnit/conversion={km}{miles}{0}{1.609344}{0}{\km}},% distance/imperial/.style={/SmartUnit/conversion={miles}{km}{0}{0.62137119}{0}{\text{mi}}},% %%%% convert=volume l <-> US gallons %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% gal/.style={convert=volume, unit gal=#1},% gal/uk/.initial=0.21996925,% 1L = 0.21996925 gal (UK) gal/usa/.initial=0.26417205,% 1L = 0.26417205 gal (USA) gallons/.style={convert=volume, unit gal=#1},% l/.style={convert=volume, unit L=#1, volume/symbol=l},% L/.style={convert=volume, unit L=#1, volume/symbol=L},% L/uk/.initial=4.54609,% 1 gal (UK) = 4.54609 L L/usa/.initial=3.7854118,% 1 gal (USA) = 3.7854118 L volume/symbol/.initial=l,% default symbol for litres volume/metric/.style={/SmartUnit/conversion={L}{gal}{0}{\smart@val{L/\smart@val{system}}}{0}{\smart@val{volume/symbol}}},% volume/imperial/.style={/SmartUnit/conversion={gal}{L}{0}{\smart@val{gal/\smart@val{system}}}{0}{\text{gal}}},% %%%% convert=weight: kg <-> lbs %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% kg/.style={convert=weight, unit kg=#1},% 1 lbs = 0.45359237 kg lbs/.style={convert=weight, unit pound=#1},% 1kg = 2.2046226 lbs (USA) pound/.style={convert=weight, unit pound=#1},% 1kg = 2.2046226 lbs (USA) weight/metric/.style={/SmartUnit/conversion={kg}{pound}{0}{0.45359237}{0}{\kg}},% weight/imperial/.style={/SmartUnit/conversion={pound}{kg}{0}{2.2046226}{0}{\text{lbs}}},% %%%% convert=temperature: C <-> F %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% celsius/.style={convert=temperature, unit celsius=#1},% C/.style={convert=temperature, unit celsius=#1},% fahrenheit/.style={convert=temperature, unit fahrenheit=#1},% F/.style={convert=temperature, unit fahrenheit=#1},% temperature/metric/.style={/SmartUnit/conversion={celsius}{fahrenheit}{-32}{5/9}{0}{\degreeCelsius}},% temperature/imperial/.style={/SmartUnit/conversion={fahrenheit}{celsius}{0}{9/5}{32}{\si{\degree}\text{F}}},% %%%% convert=length: cm <-> feet and inches %%%%%%%%%%%%%%%%%%%%%%%%% cm/.style={convert=length, unit cm=#1},% inches/.style={convert=length, unit inches=#1},% feet/.style={convert=length, unit feet=#1},% length/metric/.code={% called via /SmartUnit/printunit -> /SmartUnit/output with convert=length \pgfkeysifdefined{/SmartUnit/unit cm}{\def\pgfmathresult{\smart@val{unit cm}}}% {\pgfkeysifdefined{/SmartUnit/unit inches}{\pgfmathsetmacro{\smart@tmp}{2.54*\smart@val{unit inches}}}{\def\smart@tmp{0}}% \pgfkeysifdefined{/SmartUnit/unit feet}{\pgfmathparse{\smart@tmp+30.84*\smart@val{unit feet}}}{\let\pgfmathresult\smart@tmp}% }% \SI{\pgfmathresult}{\cm}% }, %%%% slightly tricker as we have to convert centimeters to feet and inches length/imperial/.code={% called via /SmartUnit/printunit -> /SmartUnit/output with convert=length \pgfkeysifdefined{/SmartUnit/unit inches}{\pgfkeysifdefined{/SmartUnit/unit feet}{\SI{\smart@val{unit feet}}{\arcminute}\enspace\SI{\smart@val{unit inches}}{\arcsecond}}% {\enspace\SI{\smart@val{unit inches}}{\arcsecond}}% }% {\pgfkeysifdefined{/SmartUnit/unit feet}{\SI{\smart@val{unit feet}}{\arcminute}}% {\pgfmathsetmacro{\smart@tmp}{0.39370079*\smart@val{unit cm}}% centimeters -> inches \pgfmathparse{greater(\smart@tmp,11)}% \ifnum\pgfmathresult=1% \pgfmathparse{int(\smart@tmp/12)}\SI[round-mode=places,round-precision=0]{\pgfmathresult}{\arcminute}% \pgfmathparse{\smart@tmp-12*\pgfmathresult}\enspace\SI{\pgfmathresult}{\arcsecond}% \else% \SI{\smart@tmp}{\arcsecond}% \fi% }% }% },% %%%% convert=time: 24-hour times versus 12-hour time %%%%%%%%%%%%%%%%%%%%%%%%% am/.style={convert=time, unit am=1},% pm/.style={convert=time, unit pm=1},% hours/.style={convert=time, unit hours=#1},% minutes/.style={convert=time, unit minutes=#1},% seconds/.style={convert=time, unit seconds=#1},% time/metric/.code={% \pgfkeysifdefined{/SmartUnit/unit pm}{\pgfmathparse{\smart@val{unit hours}+12}\num{\pgfmathresult}}{\num{\smart@val{unit hours}}}:\num[minimum-integer-digits=2]{\smart@val{unit minutes}}% \pgfkeysifdefined{/SmartUnit/unit seconds}{:\num[minimum-integer-digits=2]{\smart@val{unit seconds}}}{}% },% time/imperial/.code={% extra cases here to for AM/PM when hours=12 <-> \pgfkeysifdefined{/SmartUnit/unit am}{\def\smart@tmp{AM}\num{\smart@val{unit hours}}}% {\pgfkeysifdefined{/SmartUnit/unit pm}{\def\smart@tmp{PM}\num{\smart@val{unit hours}}}% {\pgfmathparse{greater(\smart@val{unit hours}+\smart@val{unit minutes}/60,12)}% \ifnum\pgfmathresult=1\def\smart@tmp{PM}\pgfmathparse{\smart@val{unit hours}==12?12:\smart@val{unit hours}-12}\num{\pgfmathresult}% \else\pgfmathparse{\smart@val{unit hours}==0?12:\smart@val{unit hours}}\num{\pgfmathresult}\def\smart@tmp{AM}% \fi% }% }% :\num[minimum-integer-digits=2]{\smart@val{unit minutes}}% \pgfkeysifdefined{/SmartUnit/unit seconds}{\pgfmathparse{greater(\smart@val{unit hours}+\smart@val{unit seconds}/60,12)}\ifnum\pgfmathresult=1\def\smart@tmp{PM}\fi% :\num[minimum-integer-digits=2]{\smart@val{unit seconds}}}{}% \enspace{\text{\smart@tmp}}% },% } \newcommand\SmartUnit[1]{% \bgroup%=> all pgfkeys changes are local to \SmartUnit => no need to reset \pgfkeys{/SmartUnit,#1}% Pass the keys to /SmartUnit \pgfkeys{/SmartUnit,printunit}% Calculate units and print \egroup% } \newcommand\SmartUnitSettings[1]{\pgfkeys{/SmartUnit,#1}} \endinput %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% CHANGE LOG %% %% Version 1.2 %% - corrections to the documentation and in particular to the incorrect conversion %% of 20 C to Fahrenheit as reported by Barbara Beeton %% - added shorthands C and F for temperature conversions %% - fixed bug that resulted in incorrect unit being printed for inches in length %% conversions with no feet and forced feet to always be printed as integers %% %% Version 1.1 %% - initial release to ctan %% %% Version 1.0 %% - initial version based on tex.stackexchange.com question %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% %% Copyright (C) 2016 by Andrew Mathas %% %% This work may be distributed and/or modified under the %% conditions of the LaTeX Project Public License (LPPL), either %% version 1.3c of this license or (at your option) any later %% version. The latest version of this license is in the file: %% %% http://www.latex-project.org/lppl.txt %% %% This work is "maintained" (as per LPPL maintenance status) by %% Andrew Mathas. %% %% This work consists of the files: %% smartunits.sty %% smartunits.tex %% smartunits.pdf %% README.md %% %% Copyright (c) 2016 Andrew Mathas %% end of smartunits.sty %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% %% End of file `smartunits.sty'. %%