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1 | /* |
2 | * From lib/bitmap.c |
3 | * Helper functions for bitmap.h. |
4 | * |
5 | * This source code is licensed under the GNU General Public License, |
6 | * Version 2. See the file COPYING for more details. |
7 | */ |
8 | #include <linux/bitmap.h> |
9 | |
10 | int __bitmap_weight(const unsigned long *bitmap, int bits) |
11 | { |
12 | int k, w = 0, lim = bits/BITS_PER_LONG; |
13 | |
14 | for (k = 0; k < lim; k++) |
15 | w += hweight_long(bitmap[k]); |
16 | |
17 | if (bits % BITS_PER_LONG) |
18 | w += hweight_long(bitmap[k] & BITMAP_LAST_WORD_MASK(bits)); |
19 | |
20 | return w; |
21 | } |
22 | |
23 | void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1, |
24 | const unsigned long *bitmap2, int bits) |
25 | { |
26 | int k; |
27 | int nr = BITS_TO_LONGS(bits); |
28 | |
29 | for (k = 0; k < nr; k++) |
30 | dst[k] = bitmap1[k] | bitmap2[k]; |
31 | } |
32 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9