mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-30 15:44:13 +08:00
c8ce540db5
This is a purely mechanical patch that removes the private
__{u,}int{8,16,32,64}_t typedefs in favor of using the system
{u,}int{8,16,32,64}_t typedefs. This is the sed script used to perform
the transformation and fix the resulting whitespace and indentation
errors:
s/typedef\t__uint8_t/typedef __uint8_t\t/g
s/typedef\t__uint/typedef __uint/g
s/typedef\t__int\([0-9]*\)_t/typedef int\1_t\t/g
s/__uint8_t\t/__uint8_t\t\t/g
s/__uint/uint/g
s/__int\([0-9]*\)_t\t/__int\1_t\t\t/g
s/__int/int/g
/^typedef.*int[0-9]*_t;$/d
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
|
|
* Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#ifndef __XFS_BIT_H__
|
|
#define __XFS_BIT_H__
|
|
|
|
/*
|
|
* XFS bit manipulation routines.
|
|
*/
|
|
|
|
/*
|
|
* masks with n high/low bits set, 64-bit values
|
|
*/
|
|
static inline uint64_t xfs_mask64hi(int n)
|
|
{
|
|
return (uint64_t)-1 << (64 - (n));
|
|
}
|
|
static inline uint32_t xfs_mask32lo(int n)
|
|
{
|
|
return ((uint32_t)1 << (n)) - 1;
|
|
}
|
|
static inline uint64_t xfs_mask64lo(int n)
|
|
{
|
|
return ((uint64_t)1 << (n)) - 1;
|
|
}
|
|
|
|
/* Get high bit set out of 32-bit argument, -1 if none set */
|
|
static inline int xfs_highbit32(uint32_t v)
|
|
{
|
|
return fls(v) - 1;
|
|
}
|
|
|
|
/* Get high bit set out of 64-bit argument, -1 if none set */
|
|
static inline int xfs_highbit64(uint64_t v)
|
|
{
|
|
return fls64(v) - 1;
|
|
}
|
|
|
|
/* Get low bit set out of 32-bit argument, -1 if none set */
|
|
static inline int xfs_lowbit32(uint32_t v)
|
|
{
|
|
return ffs(v) - 1;
|
|
}
|
|
|
|
/* Get low bit set out of 64-bit argument, -1 if none set */
|
|
static inline int xfs_lowbit64(uint64_t v)
|
|
{
|
|
uint32_t w = (uint32_t)v;
|
|
int n = 0;
|
|
|
|
if (w) { /* lower bits */
|
|
n = ffs(w);
|
|
} else { /* upper bits */
|
|
w = (uint32_t)(v >> 32);
|
|
if (w) {
|
|
n = ffs(w);
|
|
if (n)
|
|
n += 32;
|
|
}
|
|
}
|
|
return n - 1;
|
|
}
|
|
|
|
/* Return whether bitmap is empty (1 == empty) */
|
|
extern int xfs_bitmap_empty(uint *map, uint size);
|
|
|
|
/* Count continuous one bits in map starting with start_bit */
|
|
extern int xfs_contig_bits(uint *map, uint size, uint start_bit);
|
|
|
|
/* Find next set bit in map */
|
|
extern int xfs_next_bit(uint *map, uint size, uint start_bit);
|
|
|
|
#endif /* __XFS_BIT_H__ */
|