FD_ZERO            18 ext/-test-/win32/fd_setsize/fd_setsize.c     FD_ZERO(&read);
FD_ZERO            19 ext/-test-/win32/fd_setsize/fd_setsize.c     FD_ZERO(&write);
FD_ZERO            20 ext/-test-/win32/fd_setsize/fd_setsize.c     FD_ZERO(&error);
FD_ZERO            37 ext/-test-/win32/fd_setsize/fd_setsize.c     FD_ZERO(&set);
FD_ZERO           352 include/ruby/intern.h #define rb_fd_zero(f)	FD_ZERO(f)
FD_ZERO           360 include/ruby/intern.h #define rb_fd_init(f)	FD_ZERO(f)
FD_ZERO          3441 thread.c           FD_ZERO(fds->fdset);
FD_ZERO          3576 thread.c           FD_ZERO(set->fdset);
FD_ZERO          3056 win32/win32.c  		FD_ZERO(&orig_rd);
FD_ZERO          3057 win32/win32.c  		FD_ZERO(&orig_wr);
FD_ZERO          3058 win32/win32.c  		FD_ZERO(&orig_ex);