--- /dev/null
+#ifndef REGTEST
+#include <threads.h>
+#include <pthread.h>
+
+int mtx_unlock(mtx_t *mtx)
+{
+ if(pthread_mutex_unlock(mtx) == 0)
+ return thrd_success;
+ return thrd_error;
+}
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+ return TEST_RESULTS;
+}
+
+#endif