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.