'\" t
.\"     Title: bitmap_fold
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Basic Kernel Library Functions
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "BITMAP_FOLD" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Basic Kernel Library Functions"
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.SH "NAME"
bitmap_fold \- fold larger bitmap into smaller, modulo specified size
.SH "SYNOPSIS"
.HP \w'void\ bitmap_fold('u
.BI "void bitmap_fold(unsigned\ long\ *\ " "dst" ", const\ unsigned\ long\ *\ " "orig" ", unsigned\ int\ " "sz" ", unsigned\ int\ " "nbits" ");"
.SH "ARGUMENTS"
.PP
\fIdst\fR
.RS 4
resulting smaller bitmap
.RE
.PP
\fIorig\fR
.RS 4
original larger bitmap
.RE
.PP
\fIsz\fR
.RS 4
specified size
.RE
.PP
\fInbits\fR
.RS 4
number of bits in each of these bitmaps
.RE
.SH "DESCRIPTION"
.PP
For each bit oldbit in
\fIorig\fR, set bit oldbit mod
\fIsz\fR
in
\fIdst\fR\&. Clear all other bits in
\fIdst\fR\&. See further the comment and Example [2] for
\fBbitmap_onto\fR
for why and how to use this\&.
.SH "COPYRIGHT"
.br