#define SCM_DEFVARIABLEP(X) (SCM_VARIABLEP(X) && !SCM_UNBNDP (SCM_CDR (SCM_VARVCELL (X))))
\f
-#ifdef __STDC__
-extern SCM scm_make_variable (SCM init, SCM name_hint);
-extern SCM scm_make_undefined_variable (SCM name_hint);
-extern SCM scm_variable_p (SCM obj);
-extern SCM scm_variable_ref (SCM var);
-extern SCM scm_variable_set_x (SCM var, SCM val);
-extern SCM scm_builtin_variable (SCM name);
-extern SCM scm_variable_bound_p (SCM var);
-extern void scm_init_variable (void);
-
-#else /* STDC */
-extern SCM scm_make_variable ();
-extern SCM scm_make_undefined_variable ();
-extern SCM scm_variable_p ();
-extern SCM scm_variable_ref ();
-extern SCM scm_variable_set_x ();
-extern SCM scm_builtin_variable ();
-extern SCM scm_variable_bound_p ();
-extern void scm_init_variable ();
-
-#endif /* STDC */
-
-
-
+extern SCM scm_make_variable SCM_P ((SCM init, SCM name_hint));
+extern SCM scm_make_undefined_variable SCM_P ((SCM name_hint));
+extern SCM scm_variable_p SCM_P ((SCM obj));
+extern SCM scm_variable_ref SCM_P ((SCM var));
+extern SCM scm_variable_set_x SCM_P ((SCM var, SCM val));
+extern SCM scm_builtin_variable SCM_P ((SCM name));
+extern SCM scm_variable_bound_p SCM_P ((SCM var));
+extern void scm_init_variable SCM_P ((void));
#endif /* VARIABLEH */