From 4e09bca9e34c226b6d7e34b4fa11248405fd988e Mon Sep 17 00:00:00 2001
From: Anton Kling <anton@kling.gg>
Date: Sun, 22 Oct 2023 19:50:38 +0200
Subject: Move everything into a new repo.

---
 userland/libc/stdlib/rand.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 userland/libc/stdlib/rand.c

(limited to 'userland/libc/stdlib/rand.c')

diff --git a/userland/libc/stdlib/rand.c b/userland/libc/stdlib/rand.c
new file mode 100644
index 0000000..e186af7
--- /dev/null
+++ b/userland/libc/stdlib/rand.c
@@ -0,0 +1,17 @@
+#include <stdint.h>
+#include <stdlib.h>
+
+uint32_t xorshift(uint32_t x) {
+  uint32_t f = x;
+  x ^= x << 13;
+  x ^= x >> 17;
+  x ^= x << 5;
+  return f + x;
+}
+
+extern uint32_t __INTERNAL_RNG_STATE;
+int rand(void) {
+  uint32_t x = xorshift(__INTERNAL_RNG_STATE);
+  __INTERNAL_RNG_STATE++;
+  return x;
+}
-- 
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