\subsection{log1p}
\label{lablog1p}
\noindent Name: \textbf{log1p}\\
\phantom{aaa}translated logarithm.\\[0.2cm]
\noindent Library names:\\
\verb|   sollya_obj_t sollya_lib_log1p(sollya_obj_t)|\\
\verb|   sollya_obj_t sollya_lib_build_function_log1p(sollya_obj_t)|\\
\verb|   #define SOLLYA_LOG1P(x) sollya_lib_build_function_log1p(x)|\\[0.2cm]
\noindent Description: \begin{itemize}

\item \textbf{log1p} is the function defined by ${\rm log1p}(x) = \log(1+x)$.

\item It is defined only for $x \in [-1; +\infty]$.
\end{itemize}
See also: \textbf{log} (\ref{lablog})
