Implemented stdlib.h

libc/stdlib/rand.c

@@ -0,0 +1,15 @@
+#include <stdlib.h>
+
+// taken from glibc
+#define RAND_A  1103515245
+#define RAND_C  12345
+
+static size_t _next = 1;
+
+int rand(void) {
+    _next = (RAND_A * _next + RAND_C) & RAND_MAX;
+    return (int)(_next % (size_t)(RAND_MAX + 1));
+}
+
+void srand(size_t seed) { _next = seed; }
+