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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris || zos
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package unix
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// Set adds fd to the set fds.
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func (fds *FdSet) Set(fd int) {
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	fds.Bits[fd/NFDBITS] |= (1 << (uintptr(fd) % NFDBITS))
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}
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// Clear removes fd from the set fds.
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func (fds *FdSet) Clear(fd int) {
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	fds.Bits[fd/NFDBITS] &^= (1 << (uintptr(fd) % NFDBITS))
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}
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// IsSet returns whether fd is in the set fds.
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func (fds *FdSet) IsSet(fd int) bool {
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	return fds.Bits[fd/NFDBITS]&(1<<(uintptr(fd)%NFDBITS)) != 0
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}
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// Zero clears the set fds.
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func (fds *FdSet) Zero() {
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	for i := range fds.Bits {
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		fds.Bits[i] = 0
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	}
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}
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