\subsection{ceil}
\label{labceil}
\noindent Name: \textbf{ceil}\\
\phantom{aaa}the usual function ceil.\\[0.2cm]
\noindent Library names:\\
\verb|   sollya_obj_t sollya_lib_ceil(sollya_obj_t)|\\
\verb|   sollya_obj_t sollya_lib_build_function_ceil(sollya_obj_t)|\\
\verb|   #define SOLLYA_CEIL(x) sollya_lib_build_function_ceil(x)|\\[0.2cm]
\noindent Description: \begin{itemize}

\item \textbf{ceil} is defined as usual: \textbf{ceil}($x$) is the smallest integer $y$ such that $y \ge x$.

\item It is defined for every real number $x$.
\end{itemize}
See also: \textbf{floor} (\ref{labfloor}), \textbf{nearestint} (\ref{labnearestint}), \textbf{round} (\ref{labround}), \textbf{RU} (\ref{labru})
