Subversion Repositories HelenOS

Rev

Rev 2479 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1125 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2005 Jakub Jermar
1125 jermar 3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1866 jermar 29
/** @addtogroup libc
1653 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
1866 jermar 35
#ifndef LIBC_ALIGN_H_
36
#define LIBC_ALIGN_H_
1125 jermar 37
 
38
/** Align to the nearest lower address.
39
 *
40
 * @param s Address or size to be aligned.
41
 * @param a Size of alignment, must be power of 2.
42
 */
43
#define ALIGN_DOWN(s, a)    ((s) & ~((a) - 1))
44
 
45
 
46
/** Align to the nearest higher address.
47
 *
48
 * @param s Address or size to be aligned.
49
 * @param a Size of alignment, must be power of 2.
50
 */
1501 palkovsky 51
#define ALIGN_UP(s, a)      ((long)((s) + ((a) - 1)) & ~((long) (a) - 1))
1125 jermar 52
 
53
#endif
1653 cejka 54
 
1866 jermar 55
/** @}
1653 cejka 56
 */