bitmap_fold (9) - Linux Man Pages

bitmap_fold: fold larger bitmap into smaller, modulo specified size

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.

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