+proto qsort stdlib/qsort.c stdlib.h void(void*,size_t,size_t,) void(void*,size_t,size_t,int(*)(const void*,const void*))
+proto seed48 prng/seed48.c stdlib.h unsigned short*(unsigned short*) unsigned short*(unsigned short[])
+proto setgroups unistd.h grp.h int setgroups(size_t, const gid_t []); int setgroups(size_t, const gid_t *);
+proto setgroups linux/setgroups.c grp.h int(size_t,const gid_t[]) int(size_t,const gid_t*)