1set prototyped 2hdr nc,exec_attr 3mem exception.name,_exception.name math.h 4lib setreuid,setregid,nice,sigflag,fork,spawnveg,fchdir 5lib pathnative,pathposix,uwin_path,uwin_unpath,fts_notify 6lib memcntl sys/mman.h 7 8reference unistd.h 9 10extern nice int (int) 11extern setreuid int (uid_t,uid_t) 12extern setregid int (gid_t,gid_t) 13