'\" t
.\"     Title: change_bit
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Basic C Library Functions
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "CHANGE_BIT" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Basic C Library Functions"
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.SH "NAME"
change_bit \- Toggle a bit in memory
.SH "SYNOPSIS"
.HP \w'void\ change_bit('u
.BI "void change_bit(long\ " "nr" ", volatile\ unsigned\ long\ *\ " "addr" ");"
.SH "ARGUMENTS"
.PP
\fInr\fR
.RS 4
Bit to change
.RE
.PP
\fIaddr\fR
.RS 4
Address to start counting from
.RE
.SH "DESCRIPTION"
.PP
\fBchange_bit\fR
is atomic and may not be reordered\&. Note that
\fInr\fR
may be almost arbitrarily large; this function is not restricted to acting on a single\-word quantity\&.
.SH "COPYRIGHT"
.br