-typedef enum { AU_surfxml_random_generator, A_surfxml_random_generator_DRAND48,A_surfxml_random_generator_RAND } AT_surfxml_random_generator;
+typedef enum { AU_surfxml_random_generator, A_surfxml_random_generator_DRAND48,A_surfxml_random_generator_RAND,A_surfxml_random_generator_RNGSTREAM,A_surfxml_random_generator_NONE } AT_surfxml_random_generator;