X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=secnet.git;a=blobdiff_plain;f=util.h;h=1f43c5ea5caf34dbcf9a7da2e11cab8d5464b8f6;hp=816c05621571262924460c46ed3358819ecd051e;hb=7d8d39dc3418b0e709b76f08eb08ab7668239207;hpb=8534d6023d74efac11d7e2b5d1903638f3c1eca3

diff --git a/util.h b/util.h
index 816c056..1f43c5e 100644
--- a/util.h
+++ b/util.h
@@ -51,4 +51,12 @@ extern void send_nak(const struct comm_addr *dest, uint32_t our_index,
 
 extern int consttime_memeq(const void *s1, const void *s2, size_t n);
 
+#define MINMAX(ae,be,op) ({			\
+	typeof((ae)) a=(ae);			\
+	typeof((be)) b=(be);			\
+	a op b ? a : b;				\
+    })
+#define MAX(a,b) MINMAX((a),(b),>)
+#define MIN(a,b) MINMAX((a),(b),<)
+
 #endif /* util_h */