From c2481f8399afb47057888c25a588f0f88d2ce826 Mon Sep 17 00:00:00 2001
From: glenda <glenda@r51>
Date: Fri, 1 Jan 1988 05:16:45 +0000
Subject: [PATCH] spiral start + cpu bench

---
 mkfile   |  3 ++-
 spiral.c | 23 +++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 spiral.c

diff --git a/mkfile b/mkfile
index 675a63eb1afcb10ceee9ac241b1b9925c94211c2..78a4cda64cef1f37a38f8764162db44381a90579 100644
--- a/mkfile
+++ b/mkfile
@@ -2,7 +2,8 @@
 
 bins=\
 	pong\
-	maze
+	maze\
+	spiral
 
 all:VQ: $bins
 
diff --git a/spiral.c b/spiral.c
new file mode 100644
index 0000000000000000000000000000000000000000..4fe1bad664382ccaef44deea7b7dc312637127f4
--- /dev/null
+++ b/spiral.c
@@ -0,0 +1,23 @@
+#include <u.h>
+#include  <libc.h>
+#include  <draw.h>
+#include  <event.h>
+#include  <cursor.h>
+
+void
+main(void)
+{
+	double start, end;
+	double lastcos;
+
+	lastcos = 1.0;
+
+	start = cputime();
+	for (int i = 0; i < 100000000; i++)
+	{
+		lastcos = cos(lastcos) + 1.0;
+	}
+	end = cputime();
+
+	print("Calculating 100,000,000 cosines took %fs\n", end - start);
+}