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\begin{Name}{3}{unw\_regname}{David Mosberger-Tang}{Programming Library}{unw\_regname}

  unw\_regname -- get register name
\end{Name}

\section{Synopsis}

\File{\#include $<$libunwind.h$>$}\\

\Type{const char~*}\Func{unw\_regname}(\Type{unw\_regnum\_t} \Var{regnum});\\

\section{Description}

The \Func{unw\_regname}() routine returns a printable name for
register \Var{regnum}.  If \Var{regnum} is an invalid or otherwise
unrecognized register number, a string consisting of three question
marks is returned.  The returned string is statically allocated and
therefore guaranteed to remain valid until the application terminates.

\section{Return Value}

The \Func{unw\_regname}() routine cannot fail and always returns a
valid (non-\Const{NULL}) string.

\section{Thread and Signal Safety}

The \Func{unw\_regname}() routine is thread-safe as well as safe to
use from a signal handler.

\section{See Also}

\SeeAlso{libunwind(3)}

\section{Author}

\noindent
David Mosberger-Tang\\
Hewlett-Packard Labs\\
Palo-Alto, CA 94304\\
Email: \Email{davidm@hpl.hp.com}\\
WWW: \URL{http://www.hpl.hp.com/research/linux/libunwind/}.
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