aboutsummaryrefslogtreecommitdiffstats
path: root/fs/xfs/xfs_bit.h
diff options
context:
space:
mode:
Diffstat (limited to 'fs/xfs/xfs_bit.h')
-rw-r--r--fs/xfs/xfs_bit.h72
1 files changed, 27 insertions, 45 deletions
diff --git a/fs/xfs/xfs_bit.h b/fs/xfs/xfs_bit.h
index 1e7f57ddf7a8..0bbe56817542 100644
--- a/fs/xfs/xfs_bit.h
+++ b/fs/xfs/xfs_bit.h
@@ -1,33 +1,19 @@
1/* 1/*
2 * Copyright (c) 2000, 2002 Silicon Graphics, Inc. All Rights Reserved. 2 * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
3 * 4 *
4 * This program is free software; you can redistribute it and/or modify it 5 * This program is free software; you can redistribute it and/or
5 * under the terms of version 2 of the GNU General Public License as 6 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
7 * 8 *
8 * This program is distributed in the hope that it would be useful, but 9 * This program is distributed in the hope that it would be useful,
9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
11 * 13 *
12 * Further, this software is distributed without any warranty that it is 14 * You should have received a copy of the GNU General Public License
13 * free of the rightful claim of any third person regarding infringement 15 * along with this program; if not, write the Free Software Foundation,
14 * or the like. Any license provided herein, whether implied or 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
22 *
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
25 *
26 * http://www.sgi.com
27 *
28 * For further information regarding this notice, see:
29 *
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
31 */ 17 */
32#ifndef __XFS_BIT_H__ 18#ifndef __XFS_BIT_H__
33#define __XFS_BIT_H__ 19#define __XFS_BIT_H__
@@ -39,30 +25,26 @@
39/* 25/*
40 * masks with n high/low bits set, 32-bit values & 64-bit values 26 * masks with n high/low bits set, 32-bit values & 64-bit values
41 */ 27 */
42#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MASK32HI)
43__uint32_t xfs_mask32hi(int n);
44#define XFS_MASK32HI(n) xfs_mask32hi(n) 28#define XFS_MASK32HI(n) xfs_mask32hi(n)
45#else 29static inline __uint32_t xfs_mask32hi(int n)
46#define XFS_MASK32HI(n) ((__uint32_t)-1 << (32 - (n))) 30{
47#endif 31 return (__uint32_t)-1 << (32 - (n));
48#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MASK64HI) 32}
49__uint64_t xfs_mask64hi(int n);
50#define XFS_MASK64HI(n) xfs_mask64hi(n) 33#define XFS_MASK64HI(n) xfs_mask64hi(n)
51#else 34static inline __uint64_t xfs_mask64hi(int n)
52#define XFS_MASK64HI(n) ((__uint64_t)-1 << (64 - (n))) 35{
53#endif 36 return (__uint64_t)-1 << (64 - (n));
54#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MASK32LO) 37}
55__uint32_t xfs_mask32lo(int n);
56#define XFS_MASK32LO(n) xfs_mask32lo(n) 38#define XFS_MASK32LO(n) xfs_mask32lo(n)
57#else 39static inline __uint32_t xfs_mask32lo(int n)
58#define XFS_MASK32LO(n) (((__uint32_t)1 << (n)) - 1) 40{
59#endif 41 return ((__uint32_t)1 << (n)) - 1;
60#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MASK64LO) 42}
61__uint64_t xfs_mask64lo(int n);
62#define XFS_MASK64LO(n) xfs_mask64lo(n) 43#define XFS_MASK64LO(n) xfs_mask64lo(n)
63#else 44static inline __uint64_t xfs_mask64lo(int n)
64#define XFS_MASK64LO(n) (((__uint64_t)1 << (n)) - 1) 45{
65#endif 46 return ((__uint64_t)1 << (n)) - 1;
47}
66 48
67/* Get high bit set out of 32-bit argument, -1 if none set */ 49/* Get high bit set out of 32-bit argument, -1 if none set */
68extern int xfs_highbit32(__uint32_t v); 50extern int xfs_highbit32(__uint32_t v);