number used as a parameter, so that the programmer can determine how
and why it was generated in the first place.
-The following functions are provided by this module:
+The following functions are provided by this module. Except
+when explicitly noted otherwise, all return values are floats:
\begin{funcdesc}{acos}{x}
Return the arc cosine of \var{x}.
\end{funcdesc}
\begin{funcdesc}{fabs}{x}
-Return the absolute value of the floating point number \var{x}.
+Return the absolute value of \var{x}.
\end{funcdesc}
\begin{funcdesc}{floor}{x}