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%% hepunits
%% High energy physics (HEP) extensions to the SIunits package
%% Author: Andy Buckley <andy@insectnation.org>
%%
%% This material is subject to the LaTeX Project Public License.
%% See http://www.ctan.org/tex-archive/help/Catalogue/licenses.lppl.html
%% or the details of that license.
%%
%% Please let me know if you use hepunits and what you think of it.
%% I'll try to implement any suggested options that seem sensible!
\def\fileversion{1.1.1}
\def\filedate{2007/09/27}
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{hepunits}[\filedate\space High-energy physics units by Andy Buckley (v\fileversion)]
%% Now-redundant wrapper for declaring new units
\DeclareRobustCommand{\@NewUnit}[2]{\addunit{#1}{#2}}
%% Option handling variables
\def\@empty{}
\def\@yes{yes}
\def\@HEPopt@noprefixcmds{}
\def\@SIopt@cdot{}
\def\@SIopt@space{mediumspace}
\def\@SIopt@qspace{thickqspace}
\def\@SIopt@amssquare{squaren}
\def\@SIopt@pstricks{}
\def\@SIopt@Gray{}
\def\@SIopt@italian{}
\def\@SIopt@textstyle{yes}
\def\@SIopt@binary{}
\def\@SIopt@noams{}
\def\@SIopt@derivedinbase{}
\def\@SIopt@derived{}
%% Option for turning off explicit SI prefix commands
\DeclareOption{noprefixcmds}{\def\@HEPopt@noprefixcmds{yes}}
%% Options for passing to SIunits
\DeclareOption{cdot}{\def\@SIopt@cdot{yes}}
\DeclareOption{thickspace}{\def\@SIopt@space{thickspace}}
\DeclareOption{mediumspace}{\def\@SIopt@space{mediumspace}}
\DeclareOption{thinspace}{\def\@SIopt@space{thinspace}}
\DeclareOption{thickqspace}{\def\@SIopt@qspace{thickqspace}}
\DeclareOption{mediumqspace}{\def\@SIopt@qspace{mediumqspace}}
\DeclareOption{thinqspace}{\def\@SIopt@qspace{thinqspace}}
\DeclareOption{noamssquareissue}{\def\@SIopt@amssquare{}}
\DeclareOption{amssymb}{\def\@SIopt@amssquare{amssymb}}
\DeclareOption{squaren}{\def\@SIopt@amssquare{squaren}}
\DeclareOption{pstricks}{\def\@SIopt@pstricks{yes}}
\DeclareOption{Gray}{\def\@SIopt@Gray{yes}}
\DeclareOption{italian}{\def\@SIopt@italian{yes}}
\DeclareOption{textstyle}{\def\@SIopt@textstyle{yes}}
\DeclareOption{notextstyle}{\def\@SIopt@textstyle{}}
\DeclareOption{binary}{\def\@SIopt@binary{yes}}
\DeclareOption{noams}{\def\@SIopt@noams{yes}}
\DeclareOption{derivedinbase}{\def\@SIopt@derivedinbase{yes}}
\DeclareOption{derived}{\def\@SIopt@derived{yes}}
%\DeclareOption{noderived}{\def\@SIopt@derived{}}
\ProcessOptions
%% Pass the SIunits yes/no options
\ifx\@SIopt@cdot\@yes\PassOptionsToPackage{cdot}{SIunits}\fi
\ifx\@SIopt@pstricks\@yes\PassOptionsToPackage{pstricks}{SIunits}\fi
\ifx\@SIopt@Gray\@yes\PassOptionsToPackage{Gray}{SIunits}\fi
\ifx\@SIopt@italian\@yes\PassOptionsToPackage{italian}{SIunits}\fi
\ifx\@SIopt@textstyle\@yes\PassOptionsToPackage{textstyle}{SIunits}\fi
\ifx\@SIopt@binary\@yes\PassOptionsToPackage{binary}{SIunits}\fi
\ifx\@SIopt@noams\@yes\PassOptionsToPackage{noams}{SIunits}\fi
\ifx\@SIopt@derivedinbase\@yes\PassOptionsToPackage{derivedinbase}{SIunits}\fi
\ifx\@SIopt@derived\@yes\PassOptionsToPackage{derived}{SIunits}\fi
%% Pass the SIunits "choice" options
\ifx\@SIopt@space\@empty\else\PassOptionsToPackage{\@SIopt@space}{SIunits}\fi
\ifx\@SIopt@qspace\@empty\else\PassOptionsToPackage{\@SIopt@qspace}{SIunits}\fi
\ifx\@SIopt@amssquare\@empty\else\PassOptionsToPackage{\@SIopt@amssquare}{SIunits}\fi
%% Get the dependancy packages, now that the options
%% have been processed
\RequirePackage{amsmath}
\RequirePackage{xspace}
\RequirePackage{SIunits}
%% -------------------------------------------------
%% Units defined below here
%% -------------------------------------------------
\@NewUnit{\Hz}{\hertz}
\ifx\@HEPopt@noprefixcmds\@empty
%% Lengths
\@NewUnit{\nm}{\nano\metre}
\@NewUnit{\micron}{\micro\metre}
\@NewUnit{\mm}{\milli\metre}
\@NewUnit{\cm}{\centi\metre}
%% Angles
\@NewUnit{\mrad}{\milli\rad}
%% Times
\@NewUnit{\as}{\atto\second}
\@NewUnit{\fs}{\femto\second}
\@NewUnit{\ps}{\pico\second}
\@NewUnit{\ns}{\nano\second}
%% Rates
\@NewUnit{\mHz}{\milli\hertz}
\@NewUnit{\kHz}{\kilo\hertz}
\@NewUnit{\MHz}{\mega\hertz}
\@NewUnit{\GHz}{\giga\hertz}
\@NewUnit{\THz}{\tera\hertz}
\fi
%% Fields
\@NewUnit{\gauss}{G}
%% Luminosity
\@NewUnit{\invcmsqpersecond}{\rpsquare{\centi\metre}\usk\reciprocal{\second}}
\@NewUnit{\invcmsqpersec}{\invcmsqpersecond}
\DeclareRobustCommand{\lumiunits}{\invcmsqpersecond}
%% (Inverse) cross-sections
\@NewUnit{\invbarn}{\reciprocal\barn\xspace}
\ifx\@HEPopt@noprefixcmds\@empty
\@NewUnit{\nanobarn}{\nano\barn\xspace}
\@NewUnit{\picobarn}{\pico\barn\xspace}
\@NewUnit{\femtobarn}{\femto\barn\xspace}
\@NewUnit{\attobarn}{\atto\barn\xspace}
\@NewUnit{\zeptobarn}{\zepto\barn\xspace}
\@NewUnit{\yoctobarn}{\yocto\barn\xspace}
\@NewUnit{\invnanobarn}{\nano\invbarn\xspace}
\@NewUnit{\invpicobarn}{\pico\invbarn\xspace}
\@NewUnit{\invfemtobarn}{\femto\invbarn\xspace}
\@NewUnit{\invattobarn}{\atto\invbarn\xspace}
\@NewUnit{\invzeptobarn}{\zepto\invbarn\xspace}
\@NewUnit{\invyoctobarn}{\yocto\invbarn\xspace}
\@NewUnit{\invnb}{\invnanobarn}
\@NewUnit{\invpb}{\invpicobarn}
\@NewUnit{\invfb}{\invfemtobarn}
\@NewUnit{\invab}{\invattobarn}
\@NewUnit{\invzb}{\invzeptobarn}
\@NewUnit{\invyb}{\invyoctobarn}
\fi
%% HEP energy, momentum and mass units
\DeclareRobustCommand{\clight}{\ensuremath{c}}
\@NewUnit{\eV}{\electronvolt\xspace}
\@NewUnit{\inveV}{\reciprocal\electronvolt\xspace}
\@NewUnit{\eVoverc}{\ensuremath{\eV\!/\clight}\xspace}
\@NewUnit{\eVovercsq}{\ensuremath{\eV\!/\clight^{2}}\xspace}
\ifx\@HEPopt@noprefixcmds\@empty
\@NewUnit{\meV}{\milli\eV}
\@NewUnit{\keV}{\kilo\eV}
\@NewUnit{\MeV}{\mega\eV}
\@NewUnit{\GeV}{\giga\eV}
\@NewUnit{\TeV}{\tera\eV}
\@NewUnit{\minveV}{\milli\inveV}
\@NewUnit{\kinveV}{\kilo\inveV}
\@NewUnit{\MinveV}{\mega\inveV}
\@NewUnit{\GinveV}{\giga\inveV}
\@NewUnit{\TinveV}{\tera\inveV}
\@NewUnit{\meVoverc}{\ensuremath{\milli\eVoverc}\xspace}
\@NewUnit{\keVoverc}{\ensuremath{\kilo\eVoverc}\xspace}
\@NewUnit{\MeVoverc}{\ensuremath{\mega\eVoverc}\xspace}
\@NewUnit{\GeVoverc}{\ensuremath{\giga\eVoverc}\xspace}
\@NewUnit{\TeVoverc}{\ensuremath{\tera\eVoverc}\xspace}
\@NewUnit{\meVovercsq}{\ensuremath{\milli\eVovercsq}\xspace}
\@NewUnit{\keVovercsq}{\ensuremath{\kilo\eVovercsq}\xspace}
\@NewUnit{\MeVovercsq}{\ensuremath{\mega\eVovercsq}\xspace}
\@NewUnit{\GeVovercsq}{\ensuremath{\giga\eVovercsq}\xspace}
\@NewUnit{\TeVovercsq}{\ensuremath{\tera\eVovercsq}\xspace}
\fi
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