#include "libguile/__scm.h"
+extern SCM scm_values_vtable;
+
+#define SCM_VALUESP(x) (SCM_STRUCTP (x)\
+ && SCM_EQ_P (scm_struct_vtable (x), scm_values_vtable))
+
extern SCM scm_values (SCM args);
-extern SCM scm_call_with_values (SCM producer, SCM consumer);
extern void scm_init_values (void);
#endif /* SCM_VALUES_H */