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

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; other-
       wise, 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  IEEE Std 1003.1-2001,
       <pthread.h>

COPYRIGHT
       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable	Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  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 orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003				 PTHREAD_EQUAL(P)
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