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/*
* Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
*
* 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; either version 2
* of the License, or (at your option) any later version.
*
* This program 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; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/************************************************************************/
/* */
/* PROJECT : exFAT & FAT12/16/32 File System */
/* FILE : exfat_global.c */
/* PURPOSE : exFAT Miscellaneous Functions */
/* */
/*----------------------------------------------------------------------*/
/* NOTES */
/* */
/*----------------------------------------------------------------------*/
/* REVISION HISTORY (Ver 0.9) */
/* */
/* - 2010.11.15 [Joosun Hahn] : first writing */
/* */
/************************************************************************/
#include "exfat_config.h"
#include "exfat_bitmap.h"
/*----------------------------------------------------------------------*/
/* Bitmap Manipulation Functions */
/*----------------------------------------------------------------------*/
#define BITMAP_LOC(v) ((v) >> 3)
#define BITMAP_SHIFT(v) ((v) & 0x07)
s32 exfat_bitmap_test(u8 *bitmap, int i)
{
u8 data;
data = bitmap[BITMAP_LOC(i)];
if ((data >> BITMAP_SHIFT(i)) & 0x01)
return 1;
return 0;
} /* end of Bitmap_test */
void exfat_bitmap_set(u8 *bitmap, int i)
{
bitmap[BITMAP_LOC(i)] |= (0x01 << BITMAP_SHIFT(i));
} /* end of Bitmap_set */
void exfat_bitmap_clear(u8 *bitmap, int i)
{
bitmap[BITMAP_LOC(i)] &= ~(0x01 << BITMAP_SHIFT(i));
} /* end of Bitmap_clear */
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