const golang.org/x/sys/unix.NFDBITS

7 uses

	golang.org/x/sys/unix (current package)
		fdset.go#L12: 	fds.Bits[fd/NFDBITS] |= (1 << (uintptr(fd) % NFDBITS))
		fdset.go#L17: 	fds.Bits[fd/NFDBITS] &^= (1 << (uintptr(fd) % NFDBITS))
		fdset.go#L22: 	return fds.Bits[fd/NFDBITS]&(1<<(uintptr(fd)%NFDBITS)) != 0
		zerrors_linux_amd64.go#L142: 	NFDBITS                          = 0x40