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-rw-r--r--include/apos/utils.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/apos/utils.h b/include/apos/utils.h
index b973d49..f1e79fa 100644
--- a/include/apos/utils.h
+++ b/include/apos/utils.h
@@ -1,6 +1,8 @@
#ifndef APOS_UTILS_H
#define APOS_UTILS_H
+#define ABS(a) (a < 0 ? -a : a)
+
#define MAX(a, b) ((a) >= (b) ? (a) : (b))
#define MAX3(a, b, c) (MAX(a, b) >= MAX(b, c) ? MAX(a, b) : MAX(b, c))
#define MAX4(a, b, c, d) (MAX3(a, b, c) >= MAX3(b, c, d) ? MAX3(a, b, c) : MAX3(b, c, d))