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STRSIGNAL(3P)              POSIX Programmer's Manual             STRSIGNAL(3P)
PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the  corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.
NAME
       strsignal -- get name of signal
SYNOPSIS
       #include <string.h>
       char *strsignal(int signum);
DESCRIPTION
       The strsignal() function shall map the signal number in  signum  to  an
       implementation-defined  string  and  shall  return a pointer to it.  It
       shall use the same set of messages as the psignal() function.
       The application shall not modify  the  string  returned.  The  returned
       pointer might be invalidated or the string content might be overwritten
       by a subsequent call to strsignal() or setlocale().
       The contents of the message strings returned by strsignal()  should  be
       determined  by  the  setting of the LC_MESSAGES category in the current
       locale.
       The implementation shall behave as if no function defined in this stan-
       dard calls strsignal().
       Since  no return value is reserved to indicate an error, an application
       wishing to check for error situations should set errno to 0, then  call
       strsignal(), then check errno.
       The strsignal() function need not be thread-safe.
RETURN VALUE
       Upon  successful  completion,  strsignal()  shall return a pointer to a
       string. Otherwise, if signum is not a valid signal number,  the  return
       value is unspecified.
ERRORS
       No errors are defined.
       The following sections are informative.
EXAMPLES
       None.
APPLICATION USAGE
       None.
RATIONALE
       If  signum  is  not  a valid signal number, some implementations return
       NULL, while for others the strsignal() function returns a pointer to  a
       string  containing  an  unspecified message denoting an unknown signal.
       POSIX.1-2008 leaves this return value unspecified.
FUTURE DIRECTIONS
       None.
SEE ALSO
       psiginfo(), setlocale()
       The Base Definitions volume of POSIX.1-2008, <string.h>
COPYRIGHT
       Portions of this text are reprinted and reproduced in  electronic  form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri-
       cal and Electronics Engineers,  Inc  and  The  Open  Group.   (This  is
       POSIX.1-2008  with  the  2013  Technical Corrigendum 1 applied.) In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained  online
       at http://www.unix.org/online.html .
       Any  typographical  or  formatting  errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files  to  man page format. To report such errors, see https://www.ker-
       nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group                  2013                        STRSIGNAL(3P)