% File exam.cls

\ProvidesClass{exam}[2007/01/07 by Francis J. Wright]
\typeout{for BSc, MSci and MSc exams at Queen Mary, University of
London, UK;}
\typeout{see http://centaur.maths.qmul.ac.uk/Exam/}

\NeedsTeXFormat{LaTeX2e}[2005/12/01]

\RequirePackage{ifthen}

\DeclareOption{BSc}{\def\BSc@MSc{B.Sc.}}
\DeclareOption{MSc}{\def\BSc@MSc{M.Sc.}}
\DeclareOption{MSci}{\def\BSc@MSc{M.Sci.}}

\newboolean{logo}
\DeclareOption{logo}{\setboolean{logo}{true}}

\newboolean{BBB}
\DeclareOption{BBB}{\setboolean{BBB}{true}}
\DeclareOption{bbb}{\setboolean{BBB}{true}}

\DeclareOption{draft}{\PassOptionsToClass{draft}{article}}

\ExecuteOptions{BSc}
\ProcessOptions*

\LoadClass[12pt,a4paper,twoside]{article}[2005/09/16]

\ifthenelse{\boolean{BBB}}{%
  \RequirePackage{amsfonts}%
  \newcommand{\mbb}[1]{\ensuremath{\mathbb{#1}}}%
  \newcommand{\N}{\mbb{N}}%
  \newcommand{\Z}{\mbb{Z}}%
  \newcommand{\Q}{\mbb{Q}}%
  \newcommand{\R}{\mbb{R}}%
  \newcommand{\C}{\mbb{C}}%
  \newcommand{\F}{\mbb{F}}%
  \newcommand{\K}{\mbb{K}}%
}{}

\setlength{\textwidth}{6.5in}
\setlength{\textheight}{9in}
\setlength{\oddsidemargin}{0in}
\setlength{\evensidemargin}{\oddsidemargin}
\setlength{\topmargin}{-0.2in}

% Exam heading:

\newcommand{\examtitle}[1]{\newcommand{\exam@title}{#1}}
\newcommand{\examtime}[1]{\newcommand{\exam@time}{#1}}

\AtBeginDocument{%
\providecommand{\exam@title}{}% empty default
\providecommand{\exam@time}{}% empty default
\ifthenelse{\boolean{logo}}{%
  % The following code to typeout a ~ is based on a comp.text.tex
  % posting dated 1993-02-09 by Donald Arseneau <asnd@erich.triumf.ca>:
  %\def\gobble#1{}\def\til{\expandafter\gobble\string\~}%
  \typeout{QMUL logo support by Steve Schwartz.}%
  %\typeout{QMUL logo support by Steve Schwartz;}%
  %\typeout{see http://www.maths.qmul.ac.uk/\til sjs/ExamTemplate/}%
  %% sjs dec 2002, jan 2003
  \RequirePackage{graphicx}%
  \vspace*{-0.53in}\noindent
  \typeout{{DVI/PDF} output requires QMUL logo file qmula.{eps/pdf}.}%
  \includegraphics[width=2.0in]{qmula}\\[0.2in]
}{%
  \vspace*{-0.4in}\noindent
  {\Large\bfseries Queen Mary} \\
  {\large\sffamily UNIVERSITY OF LONDON} \\[0.2in]}
{\Large\sffamily \BSc@MSc\ EXAMINATION BY COURSE UNITS} \\[0.2in]
{\large\bfseries \exam@title} \\[0.2in]
\exam@time
\vspace{0.2in}
}

% Page header - page numbers after first on alternating sides:

\def\@oddhead{\ifnum\thepage>1 \hfil\textrm{\thepage} \fi}
\def\@evenhead{\textrm{\thepage}\hfil}

% Page footer:

\def\@oddfoot{\ifnum\thepage=1 {\small\rmfamily
  \copyright\ Queen Mary, University of London, \number\year} \fi
  \hfil\leftmark}
% \leftmark outputs the LAST "left" mark set by \markboth
\let\@evenfoot\@oddfoot

\AtEndDocument{%
  \markboth{\textit{[End of examination paper]}}{}}

% Command to end the cover page and start the exam proper:

\newcommand{\startexam}{
  \vfill
  \begin{center}\bf
    YOU ARE NOT PERMITTED TO START READING THIS QUESTION PAPER UNTIL
    INSTRUCTED TO DO SO BY AN INVIGILATOR
  \end{center}
  \vfill
  \newpage
}

% Section command and rubric environment:

\newcommand{\long@questions}{true}
\newcommand{\secname}{}% in case no \section.

\renewcommand{\section}[2][]%
  {\renewcommand{\secname}{#2}%
    \noindent{\large\bfseries SECTION #2}%
    \ifthenelse{\equal{#1}{short}}%
	       {\renewcommand{\long@questions}{false}}%
	       {\renewcommand{\long@questions}{true}}}

% \section ought to suppress an immediately following page break, but
% since the following text will be in an environment this is tricky!

\newenvironment{rubric}[1][]%
  {\newboolean{long@}%
  \ifthenelse{\equal{#1}{}}%
    {\setboolean{long@}{\long@questions}}%
    {\ifthenelse{\equal{#1}{short}}%
      {\setboolean{long@}{false}}{\setboolean{long@}{true}}}%
   \begin{quote}\em}%
  {\end{quote}
   \ifthenelse{\boolean{long@}}{\vspace{\baselineskip}}{}}

% Question environments:

\newcounter{qno}
\newenvironment{questions}[1][]%
  {\begin{list}{\textbf{\secname\arabic{qno}.}}%
   {\usecounter{qno}%
    \ifthenelse{\(\equal{#1}{} \and \equal{\long@questions}{false}\)%
     \or \equal{#1}{short}}{}%
      {\setlength{\itemsep}{3\baselineskip}}}}%
  {\end{list}%
   \markboth{\textit{[Next section overleaf]}}{}%
   \vspace{3\baselineskip}}%

\newboolean{LastQuestion}
\newenvironment{question}[1][]%
  {\item%
    \markboth{\textit{[This question continues overleaf \ldots]}}{}%
    \ifthenelse{\equal{#1}{last}}%
	       {\setboolean{LastQuestion}{true}}%
	       {\setboolean{LastQuestion}{false}}}%
  {\ifthenelse{\boolean{LastQuestion}}%
    {\markboth{\textit{[End of examination paper]}}{}}%
    {\markboth{\textit{[Next question overleaf]}}{}}}%

% Sub-question environments:

\newcounter{subqno}
\newenvironment{subquestions}%
  {\begin{list}{(\alph{subqno})}{\usecounter{subqno}}}%
  {\end{list}}%
\newcommand{\subquestion}{\item{}}

\newcounter{subsubqno}
\newenvironment{subsubquestions}%
  {\begin{list}{(\roman{subsubqno})}{\usecounter{subsubqno}}}%
  {\end{list}}%
\newcommand{\subsubquestion}{\item{}}

% Miscellaneous useful commands:

\renewcommand{\th}{\ensuremath{^\mathit{th}}}
% By default, \th represents thorn in the Cork encoding (T1) etc.

% \renewcommand{\theenumi}{\roman{enumi}}
% \renewcommand{\labelenumi}{(\roman{enumi})}

% End of file exam.cls