diff options
Diffstat (limited to 'util.c')
| -rw-r--r-- | util.c | 21 |
1 files changed, 21 insertions, 0 deletions
@@ -325,6 +325,27 @@ int bitmap_isset(const uint8_t *map, int bit) return !!(*word & BITMAP_BIT(bit)); } +/** + * bitmap_or() - Logical disjunction (OR) of two bitmaps + * @dst: Pointer to result bitmap + * @size: Size of bitmaps, in bytes + * @a: First operand + * @b: Second operand + */ +void bitmap_or(uint8_t *dst, size_t size, const uint8_t *a, const uint8_t *b) +{ + unsigned long *dw = (unsigned long *)dst; + unsigned long *aw = (unsigned long *)a; + unsigned long *bw = (unsigned long *)b; + size_t i; + + for (i = 0; i < size / sizeof(long); i++, dw++, aw++, bw++) + *dw = *aw | *bw; + + for (i = size / sizeof(long) * sizeof(long); i < size; i++) + dst[i] = a[i] | b[i]; +} + /* * ns_enter() - Enter configured user (unless already joined) and network ns * @c: Execution context |