PTHREAD_MUTEXATTR_DESTROY (man3p)
pthread_mutexattr_destroy, pthread_mutexattr_init — destroy and initialize the mutex attributes object
pthread_mutexattr_destroy, pthread_mutexattr_init — destroy and initialize the mutex attributes object
tempnam — create a name for a temporary file
posix_trace_attr_setinherited, posix_trace_attr_setlogfullpolicy — retrieve and set the behavior of a trace stream (TRACING)
getgrent — get the group database entry
pthread_rwlockattr_setpshared — set the process-shared attribute of the read-write lock attributes object
tan, tanf, tanl — tangent function
posix_trace_attr_getstreamsize — retrieve and set trace stream size attributes (TRACING)
pthread_attr_getstacksize, pthread_attr_setstacksize — get and set the stacksize attribute
sync — schedule file system updates
fread — binary input