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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, unsigned int sz, unsigned int nbits);

ARGUMENTS

dst
resulting smaller bitmap
orig
original larger bitmap
sz
specified size
nbits
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

January 2017 Kernel Hackers Manual 4.8.