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.