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+\documentclass{article}
+\usepackage[fancyhdr,pdf]{latex2man}
+
+\input{common.tex}
+
+\begin{document}
+
+\begin{Name}{3}{unw\_is\_signal\_frame}{David Mosberger-Tang}{Programming Library}{unw\_is\_signal\_frame}unw\_is\_signal\_frame -- check if current frame is a signal frame
+\end{Name}
+
+\section{Synopsis}
+
+\File{\#include $<$libunwind.h$>$}\\
+
+\Type{int} \Func{unw\_is\_signal\_frame}(\Type{unw\_cursor\_t~*}\Var{cp});\\
+
+\section{Description}
+
+The \Func{unw\_is\_signal\_frame}() routine returns a positive value
+if the current frame identified by \Var{cp} is a signal frame, and a
+value of 0 otherwise.  For the purpose of this discussion, a signal
+frame is a frame that was created in response to a potentially
+asynchronous interruption.  For UNIX and UNIX-like platforms, such
+frames are normally created by the kernel when delivering a signal.
+In a kernel-environment, a signal frame might, for example, correspond
+to a frame created in response to a device interrupt.
+
+Signal frames are somewhat unusual because the asynchronous nature of
+the events that create them require storing the contents of registers
+that are normally treated as scratch (``caller-saved'') registers.
+
+\section{Return Value}
+
+On successful completion, \Func{unw\_is\_signal\_frame}() returns a
+positive value if the current frame is a signal frame, or 0 if it is
+not.  Otherwise, a negative value of one of the error-codes below is
+returned.
+
+\section{Thread and Signal Safety}
+
+\Func{unw\_is\_signal\_frame}() is thread-safe as well as safe to use
+from a signal handler.
+
+\section{Errors}
+
+\begin{Description}
+\item[\Const{UNW\_ENOINFO}] \Prog{Libunwind} is unable to determine
+  whether or not the current frame is a signal frame.
+\end{Description}
+
+\section{See Also}
+
+\SeeAlso{libunwind(3)},
+\SeeAlso{unw\_get\_reg(3)},
+\SeeAlso{unw\_set\_reg(3)},
+\SeeAlso{unw\_get\_fpreg(3)},
+\SeeAlso{unw\_set\_fpreg(3)}
+
+\section{Author}
+
+\noindent
+David Mosberger-Tang\\
+Email: \Email{dmosberger@gmail.com}\\
+WWW: \URL{http://www.nongnu.org/libunwind/}.
+\LatexManEnd
+
+\end{document}