meta: move photon/libc to root

libc/stdlib/rand.c

@@ -0,0 +1,31 @@
+#include <stddef.h>
+
+static unsigned int seed = 0;
+
+void srand(unsigned int _seed)
+{
+    seed = _seed;
+}
+
+int rand(void)
+{
+    int next = seed;
+    int result;
+
+    next *= 1103515245;
+    next += 12345;
+    result = (int)(next / 65536) % 2048;
+
+    next *= 1103515245;
+    next += 12345;
+    result <<= 10;
+    result ^= (int)(next / 65536) % 1024;
+
+    next *= 1103515245;
+    next += 12345;
+    result <<= 10;
+    result ^= (int)(next / 65536) % 1024;
+
+    seed = next;
+    return result;
+}