1 files changed, 18 insertions, 0 deletions
diff --git a/stats.c b/stats.c
new file mode 100644
index 0000000..2232937
--- /dev/null
+++ b/stats.c
@@ -0,0 +1,18 @@
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+#include "dat.h"
+#include "fns.h"
+
+static double min(double a, double b) { return a < b? a: b; }
+static double max(double a, double b) { return a > b? a: b; }
+
+void
+statsupdate(Stats *s, double n)
+{
+	s->cur = n;
+	s->total += s->cur;
+	s->avg = s->total/++s->nupdates;
+	s->min = min(s->cur, s->min);
+	s->max = max(s->cur, s->max);
+}