From fc00c656c96528112d05cf0edf8631bd5eaea446 Mon Sep 17 00:00:00 2001
From: Kacper <kacper@mail.openlinux.dev>
Date: Sun, 7 Dec 2025 20:10:31 +0100
Subject: Add build system scaffolding and libc headers

---
 lib/libc/time/clock.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 lib/libc/time/clock.c

(limited to 'lib/libc/time/clock.c')

diff --git a/lib/libc/time/clock.c b/lib/libc/time/clock.c
new file mode 100644
index 00000000..ec2e6084
--- /dev/null
+++ b/lib/libc/time/clock.c
@@ -0,0 +1,16 @@
+#include <time.h>
+#include <limits.h>
+
+clock_t clock(void)
+{
+	struct timespec ts;
+
+	if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts))
+		return -1;
+
+	if (ts.tv_sec > LONG_MAX / 1000000 ||
+	    ts.tv_nsec / 1000 > LONG_MAX - 1000000 * ts.tv_sec)
+		return -1;
+
+	return ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
+}
-- 
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