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stdlib: Add IS_ALIGNED macro 

Add a macro to check if a value is aligned.

BUG=chrome-os-partner:36258
BRANCH=none
TEST=Build and boot on Pistachio.

Change-Id: I0680954eb1b1964a631527f96aa0570a32944fa1
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 4f1717648e0a4b54217d71f8d0a15d496737d156
Original-Change-Id: Ie0bc1374918a7ffaaec5fea62c1193a42edd416c
Original-Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/246692
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/8757
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Andrew Bresticker 2015-02-05 13:27:59 -08:00 committed by Patrick Georgi
parent 8dd4f98222
commit 19fd0b09ee
1 changed files with 1 additions and 0 deletions
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1
src/include/stdlib.h
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@ -9,6 +9,7 @@
#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
#define ALIGN_UP(x,a) ALIGN((x),(a))
#define ALIGN_DOWN(x,a) ((x) & ~((typeof(x))(a)-1UL))
#define IS_ALIGNED(x,a) (((x) & ((typeof(x))(a)-1UL)) == 0)
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) > (b) ? (a) : (b))