\subsection{asinh}
\label{labasinh}
\noindent Name: \textbf{asinh}\\
\phantom{aaa}the arg-hyperbolic sine function.\\[0.2cm]
\noindent Library names:\\
\verb|   sollya_obj_t sollya_lib_asinh(sollya_obj_t)|\\
\verb|   sollya_obj_t sollya_lib_build_function_asinh(sollya_obj_t)|\\
\verb|   #define SOLLYA_ASINH(x) sollya_lib_build_function_asinh(x)|\\[0.2cm]
\noindent Description: \begin{itemize}

\item \textbf{asinh} is the inverse of the function \textbf{sinh}: \textbf{asinh}($y$) is the unique number 
   $x \in [-\infty; +\infty]$ such that \textbf{sinh}($x$)=$y$.

\item It is defined for every real number y.
\end{itemize}
See also: \textbf{sinh} (\ref{labsinh})
