BITMAP_FOLD(9) Basic Kernel Library Functions BITMAP_FOLD(9)
NAME
bitmap_fold - fold larger bitmap into smaller, modulo specified size
SYNOPSIS
void bitmap_fold(unsigned long * dst, const unsigned long * orig, int sz, int bits);
ARGUMENTS
dst
resulting smaller bitmap
orig
original larger bitmap
sz
specified size
bits
number of bits in each of these bitmaps
DESCRIPTION
For each bit oldbit in orig, set bit oldbit mod sz in dst. Clear all other bits in dst. See further the comment and Example [2] for
bitmap_onto for why and how to use this.
COPYRIGHT
Kernel Hackers Manual 2.6. July 2010 BITMAP_FOLD(9)
