1 // Copyright 2019 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
5 // +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
9 // Set adds fd to the set fds.
10 func (fds *FdSet) Set(fd int) {
11 fds.Bits[fd/NFDBITS] |= (1 << (uintptr(fd) % NFDBITS))
14 // Clear removes fd from the set fds.
15 func (fds *FdSet) Clear(fd int) {
16 fds.Bits[fd/NFDBITS] &^= (1 << (uintptr(fd) % NFDBITS))
19 // IsSet returns whether fd is in the set fds.
20 func (fds *FdSet) IsSet(fd int) bool {
21 return fds.Bits[fd/NFDBITS]&(1<<(uintptr(fd)%NFDBITS)) != 0
24 // Zero clears the set fds.
25 func (fds *FdSet) Zero() {
26 for i := range fds.Bits {