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| author | Edward O'Callaghan <eocallaghan@alterapraxis.com> | 2014-07-07 20:33:09 +1000 |
|---|---|---|
| committer | Edward O'Callaghan <eocallaghan@alterapraxis.com> | 2014-07-10 20:50:16 +0200 |
| commit | fd570665ce9eb76e02d1fe5fb958e87ea017fd73 (patch) | |
| tree | 5d11e7124936be0fdb961c87eabcee3c33fcf389 /src | |
| parent | 4793328fbd00776046f43ef8d5f0775c54a7e572 (diff) | |
| download | coreboot-fd570665ce9eb76e02d1fe5fb958e87ea017fd73.tar.xz | |
include/stdlib.h: Extend common macro collection
Add the following useful macros:
* Absolute Value Macro
* Taking ceiling of (a / b)
* Check if value x is a power of 2 or not
Change-Id: I4e9a326aea3cdd963f13548d1fb63331a57d84b1
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/6198
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/stdlib.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/stdlib.h b/src/include/stdlib.h index 44d7c0126b..9bc0ebc97b 100644 --- a/src/include/stdlib.h +++ b/src/include/stdlib.h @@ -12,6 +12,9 @@ #define MIN(a,b) ((a) < (b) ? (a) : (b)) #define MAX(a,b) ((a) > (b) ? (a) : (b)) +#define ABS(a) (((a) < 0) ? (-(a)) : (a)) +#define CEIL_DIV(a, b) (((a) + (b) - 1) / (b)) +#define IS_POWER_OF_2(x) (((x) & ((x) - 1)) == 0) #define min(a,b) MIN((a),(b)) #define max(a,b) MAX((a),(b)) |