3 * Helper functions for bitmap.h.
5 * This source code is licensed under the GNU General Public License,
6 * Version 2. See the file COPYING for more details.
8 #include <linux/bitmap.h>
10 int __bitmap_weight(const unsigned long *bitmap, int bits)
12 int k, w = 0, lim = bits/BITS_PER_LONG;
14 for (k = 0; k < lim; k++)
15 w += hweight_long(bitmap[k]);
17 if (bits % BITS_PER_LONG)
18 w += hweight_long(bitmap[k] & BITMAP_LAST_WORD_MASK(bits));
23 void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
24 const unsigned long *bitmap2, int bits)
27 int nr = BITS_TO_LONGS(bits);
29 for (k = 0; k < nr; k++)
30 dst[k] = bitmap1[k] | bitmap2[k];