mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
synced 2024-11-24 04:09:15 +01:00
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
|
/*
|
||
|
|
* support.h - Useful definitions and macros. Originated from the Linux-NTFS project.
|
||
|
|
*
|
||
|
|
* Copyright (c) 2000-2004 Anton Altaparmakov
|
||
|
|
*
|
||
|
|
* This program/include file 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; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program/include file is distributed in the hope that it will 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 (in the main directory of the NTFS-3G
|
||
|
|
* distribution in the file COPYING); if not, write to the Free Software
|
||
|
|
* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _NTFS_SUPPORT_H
|
||
|
|
#define _NTFS_SUPPORT_H
|
||
|
|
|
||
|
|
#ifdef HAVE_CONFIG_H
|
||
|
|
#include "config.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef HAVE_STDDEF_H
|
||
|
|
#include <stddef.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Our mailing list. Use this define to prevent typos in email address.
|
||
|
|
*/
|
||
|
|
#define NTFS_DEV_LIST "ntfs-3g-devel@lists.sf.net"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Generic macro to convert pointers to values for comparison purposes.
|
||
|
|
*/
|
||
|
|
#ifndef p2n
|
||
|
|
#define p2n(p) ((ptrdiff_t)((ptrdiff_t*)(p)))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The classic min and max macros.
|
||
|
|
*/
|
||
|
|
#ifndef min
|
||
|
|
#define min(a,b) ((a) <= (b) ? (a) : (b))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef max
|
||
|
|
#define max(a,b) ((a) >= (b) ? (a) : (b))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Useful macro for determining the offset of a struct member.
|
||
|
|
*/
|
||
|
|
#ifndef offsetof
|
||
|
|
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Simple bit operation macros. NOTE: These are NOT atomic.
|
||
|
|
*/
|
||
|
|
#define test_bit(bit, var) ((var) & (1 << (bit)))
|
||
|
|
#define set_bit(bit, var) (var) |= 1 << (bit)
|
||
|
|
#define clear_bit(bit, var) (var) &= ~(1 << (bit))
|
||
|
|
|
||
|
|
#define test_and_set_bit(bit, var) \
|
||
|
|
({ \
|
||
|
|
const BOOL old_state = test_bit(bit, var); \
|
||
|
|
set_bit(bit, var); \
|
||
|
|
old_state; \
|
||
|
|
})
|
||
|
|
|
||
|
|
#define test_and_clear_bit(bit, var) \
|
||
|
|
({ \
|
||
|
|
const BOOL old_state = test_bit(bit, var); \
|
||
|
|
clear_bit(bit, var); \
|
||
|
|
old_state; \
|
||
|
|
})
|
||
|
|
|
||
|
|
#endif /* defined _NTFS_SUPPORT_H */
|
||
|
|
|