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Diffstat (limited to 'lib/birdlib.h')
| -rw-r--r-- | lib/birdlib.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/birdlib.h b/lib/birdlib.h index 94054769..ad41dca3 100644 --- a/lib/birdlib.h +++ b/lib/birdlib.h @@ -31,6 +31,7 @@ #endif #define ABS(a) ((a)>=0 ? (a) : -(a)) +#define DELTA(a,b) (((a)>=(b))?(a)-(b):(b)-(a)) #define ARRAY_SIZE(a) (sizeof(a)/sizeof(*(a))) |