Add "if" built-in
diff --git a/src/lisp/lib/std.h b/src/lisp/lib/std.h
index 85d766c..000129e 100644
--- a/src/lisp/lib/std.h
+++ b/src/lisp/lib/std.h
@@ -1,9 +1,9 @@
 #pragma once
 
-#include "../lisp.h"
 #include "../compiler.h"
+#include "../lisp.h"
 
-value_t l_plus (value_t a, value_t b);
+value_t l_plus(value_t a, value_t b);
 
-void add_function (struct environment *env, char *name, void *func, int nargs);
-void load_std (struct environment *env);
+void add_function(struct environment *env, char *name, void *func, int nargs);
+void load_std(struct environment *env);