#if __GNUC__ > 2 || __GNUC_MINOR__ >= 96
typedef SCM (*Scheme_function_0) ();
typedef SCM (*Scheme_function_1) (SCM);
-typedef SCM (*Scheme_function_2) (SCM,SCM);
-typedef SCM (*Scheme_function_3) (SCM,SCM, SCM);
+typedef SCM (*Scheme_function_2) (SCM, SCM);
+typedef SCM (*Scheme_function_3) (SCM, SCM, SCM);
#else
typedef SCM (*Scheme_function_0) (...);
typedef SCM (*Scheme_function_1) (...);