| Darren Reed | da0443e | 2006-06-15 16:17:17 +0000 | [diff] [blame] | 1 | /* |
| Darren Reed | 22473eb | 2012-01-26 05:44:26 +0000 | [diff] [blame] | 2 | * Copyright (C) 2009 by Darren Reed. |
| Darren Reed | da0443e | 2006-06-15 16:17:17 +0000 | [diff] [blame] | 3 | * |
| 4 | * See the IPFILTER.LICENCE file for details on licencing. |
| 5 | * |
| 6 | * $Id$ |
| 7 | */ |
| 8 | |
| 9 | #include "ipf.h" |
| 10 | |
| 11 | |
| 12 | int count6bits(msk) |
| Martti Kuparinen | 74b6c5c | 2007-10-25 12:55:40 +0000 | [diff] [blame] | 13 | u_32_t *msk; |
| Darren Reed | da0443e | 2006-06-15 16:17:17 +0000 | [diff] [blame] | 14 | { |
| 15 | int i = 0, k; |
| 16 | u_32_t j; |
| 17 | |
| 18 | for (k = 3; k >= 0; k--) |
| 19 | if (msk[k] == 0xffffffff) |
| 20 | i += 32; |
| 21 | else { |
| 22 | for (j = msk[k]; j; j <<= 1) |
| 23 | if (j & 0x80000000) |
| 24 | i++; |
| 25 | } |
| 26 | return i; |
| 27 | } |