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-rw-r--r--src/core/common.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/core/common.h b/src/core/common.h
index 4b7bcb0a..e57c59d8 100644
--- a/src/core/common.h
+++ b/src/core/common.h
@@ -178,3 +178,4 @@ void re3_assert(const char *expr, const char *filename, unsigned int lineno, con
#define max(a, b) (((a) > (b)) ? (a) : (b))
#define min(a, b) (((a) < (b)) ? (a) : (b))
+#define abs(a) (((a) < 0) ? (-a) : (a))