\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{mkessler-math}[2021/03/31 - Math package]
%%%%%%Provides the basic math packages used for my lecture-note write-ups

\newif\if@mkessler@math@english\@mkessler@math@englishtrue
\DeclareOption{german}{\@mkessler@math@englishfalse}
\DeclareOption{ngerman}{\@mkessler@math@englishfalse}
\DeclareOption{english}{\@mkessler@math@englishtrue}

\DeclareOption*{\PackageWarning{mkessler-math}{Unknown '\CurrentOption'}}
\ProcessOptions\relax

\RequirePackage{newunicodechar}
    \newunicodechar{α}{\ensuremath\alpha}
    \newunicodechar{β}{\ensuremath\beta}
    \newunicodechar{γ}{\ensuremath\gamma}
    \newunicodechar{δ}{\ensuremath\delta}
    \newunicodechar{ε}{\ensuremath\epsilon}
    \newunicodechar{ζ}{\ensuremath\zeta}
    \newunicodechar{η}{\ensuremath\eta}
    \newunicodechar{θ}{\ensuremath\theta}
    \newunicodechar{ι}{\ensuremath\iota}
    \newunicodechar{κ}{\ensuremath\kappa}
    \newunicodechar{λ}{\ensuremath\lambda}
    \newunicodechar{μ}{\ensuremath\mu}
    \newunicodechar{ν}{\ensuremath\nu}
    \newunicodechar{ξ}{\ensuremath\xi}
    \newunicodechar{π}{\ensuremath\pi}
    \newunicodechar{ρ}{\ensuremath\rho}
    \newunicodechar{σ}{\ensuremath\sigma}
    \newunicodechar{τ}{\ensuremath\tau}
    \newunicodechar{υ}{\ensuremath\upsilon}
    \newunicodechar{φ}{\ensuremath\phi}
    \newunicodechar{χ}{\ensuremath\chi}
    \newunicodechar{ψ}{\ensuremath\psi}
    \newunicodechar{ω}{\ensuremath\omega}

\RequirePackage{amsmath}
\RequirePackage{mathtools}
\RequirePackage{amsthm}
\RequirePackage{amssymb}

\RequirePackage{latexsym}
\RequirePackage{mathrsfs}

\RequirePackage{pgfplots} % Plots
\pgfplotsset{compat=1.7}

\RequirePackage{tikz} % Plots / drawings
\usetikzlibrary{calc, intersections, through, quotes, angles, babel, positioning, snakes}

\RequirePackage{tikz-cd} %Commutative diagrams


%%for small diagrams, similar to tikz-cd
\usepackage[all]{xy}        % for small diagrams, e.g. arrows
%%% In older versions, you found 
% \usepackage{xy}
% \xyoption{all}
% here, but this messes with the catcode of the @ sign (which no package should do!)
% so that further parts in this package would get broken

% Für Formeln
\RequirePackage{mathabx}
\RequirePackage{faktor}
\RequirePackage[mathscr]{eucal} % \mathscr for another calligraphic alphabet
\RequirePackage{esint}

\RequirePackage{IEEEtrantools}


\RequirePackage[ngerman,ruled,vlined]{algorithm2e}


%%% Custom commands


%Short commands for \mathbb{}
\newcommand{\C}{\ensuremath{\mathbb{C}}}
\newcommand{\F}{\ensuremath{\mathbb{F}}}
\newcommand{\K}{\ensuremath{\mathbb{K}}}
\newcommand{\N}{\ensuremath{\mathbb{N}}}
\newcommand{\Q}{\ensuremath{\mathbb{Q}}}
\newcommand{\R}{\ensuremath{\mathbb{R}}}
\newcommand{\Z}{\ensuremath{\mathbb{Z}}}

%Paired Delimiters
\DeclarePairedDelimiter\ceil{\lceil}{\rceil}
\DeclarePairedDelimiter\floor{\lfloor}{\rfloor}

%Norm and absolute value
%Make them scaling by default and have \abs*{} as the non-scaling version of the command
\DeclarePairedDelimiter\abs{\lvert}{\rvert}
\let\oldabs\abs
\def\abs{\@ifstar{\oldabs}{\oldabs*}}

\DeclarePairedDelimiter\norm{\lVert}{\rVert}
\let\oldnorm\norm
\def\norm{\@ifstar{\oldnorm}{\oldnorm*}}

%%%Fixes of common misbehaviour

%Proper Degree command
\renewcommand{\degree}{^\circ}

% Always put limits under \limit
\let\oldlim\lim\def\lim{\oldlim\limits}

\RequirePackage[mathscr]{eucal} % \mathscr alphabet
\newcommand{\cat}[1]{ \mathscr{#1} }


\if@mkessler@math@english
    \RequirePackage[english]{mkessler-operators}
\else
    \RequirePackage[german]{mkessler-operators}
\fi