posix man page for pthread_equal

PTHREAD_EQUAL(3P)					     POSIX Programmer's Manual						 PTHREAD_EQUAL(3P)

PROLOG
       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME
       pthread_equal -- compare thread IDs

SYNOPSIS
       #include <pthread.h>

       int pthread_equal(pthread_t t1, pthread_t t2);

DESCRIPTION
       This function shall compare the thread IDs t1 and t2.

RETURN VALUE
       The pthread_equal() function shall return a non-zero value if t1 and t2 are equal; otherwise, zero shall be returned.

       If either t1 or t2 are not valid thread IDs, the behavior is undefined.

ERRORS
       No errors are defined.

       The pthread_equal() function shall not return an error code of [EINTR].

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       Implementations may choose to define a thread ID as a structure. This allows additional flexibility and robustness over using an int.   For
       example,  a  thread  ID	could  include	a  sequence  number that allows detection of ``dangling IDs'' (copies of a thread ID that has been
       detached). Since the C language does not support comparison on structure types, the pthread_equal() function is provided to compare  thread
       IDs.

FUTURE DIRECTIONS
       None.

SEE ALSO
       pthread_create(), pthread_self()

       The Base Definitions volume of POSIX.1-2008, <pthread.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C)  2013  by	the  Institute	of
       Electrical 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 Stan-
       dard 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.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE
/The Open Group						       2013							 PTHREAD_EQUAL(3P)