From d5b96b4d1ebb87f25f793f6d644899a1bc13deb3 Mon Sep 17 00:00:00 2001
From: Laurent Mazet <mazet@softndesign.org>
Date: Sun, 5 Oct 2025 09:18:49 +0200
Subject: [PATCH] add test for clock

---
 clock.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 clock.c

diff --git a/clock.c b/clock.c
new file mode 100644
index 0000000..1aeb17b
--- /dev/null
+++ b/clock.c
@@ -0,0 +1,48 @@
+/* depend: */
+/* cflags: */
+/* linker: mtime.o test.o stat.o -lm -lrt */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "mtime.h"
+#include "test.h"
+
+/* global variables */
+
+dts_t *deltas = NULL;
+int nb_measurements = 0;
+
+char *message = "Cycle latency";
+void (*usage_ext) (FILE *) = NULL;
+int (*parse_arg_ext) (char *) = NULL;
+
+int try = 0;
+
+#define MAXDUR 1000
+#define MINDUR 100
+
+int test (dts_t *buffer, int nb)
+{
+
+    /* set global variables */
+
+    deltas = buffer;
+    nb_measurements = nb;
+
+    /* thread test */
+
+    for (int i = 0; i < nb_measurements; i++) {
+
+        int duration = MINDUR * ((MAXDUR / MINDUR) * rand () / RAND_MAX);
+        usleep (duration);
+
+        ts_t ts1, ts2;
+        sys_timestamp (&ts1);
+        sys_timestamp (&ts2);
+        deltas[i] = diff_timestamp (&ts2, &ts1);
+    }
+
+    return 0;
+}
-- 
2.30.2