Ceiling function within verbatim in latex

Question

I am preparing a latex document. Inside the body of a function I need to use the ceiling function. How will I use the ceiling function inside verbatim?

\begin{verbatim}

Method a(b)

    .
    .
    .

  return a(ceiling of sqrt(b));

\end{verbatim}

Can anyone suggest me how to write ceiling inside verbatim?

Answer 1

fancyvrb provides a stepping stone to mix regular math with verbatim content. Here's a small example:

\documentclass{article}
\usepackage{fancyvrb}% http://ctan.org/pkg/fancyvrb
\newcommand{\mesc}[1]{$#1$}
\begin{document}
\begin{Verbatim}[commandchars=\\\{\}]
Method \mesc{a(b)}
    .
    .
    .
return \mesc{a(\lceil\sqrt{b}\rceil)};
\end{Verbatim}
\end{document}

You can, of course, also try using listings, which provides the mathescape key; yielding similar results as above.