>, and
<B>pthread_setspecific</B> return 0 on success and a non-zero error
code on failure. If successful, <B>pthread_key_create</B> stores the
newly allocated key in the location pointed to by its <I>key</I>
argument. 
</P>
<P><B>pthread_getspecific</B> returns the value associated with <I>key</I>
on success, and <B>NULL</B> on error. 
</P>
<H2><A HREF="#toc4" NAME="sect4">Errors</A></H2>
<P><B>pthread_key_create</B> returns the following error code on
error: 
</P>
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