pthread_equal - compare thread IDs
This function shall compare the thread IDs t1 and t2.
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.
No errors are defined.
The pthread_equal() function shall not return an error code of [EINTR].
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.
pthread_create(), pthread_self(), the Base Definitions volume of IEEE Std 1003.1-2001, <pthread.h>
First released in Issue 5. Included for alignment with the POSIX Threads Extension.
The pthread_equal() function is marked as part of the Threads option.