typedef void *(*pvoid_f_pvoid_t) (void *);
typedef void (*void_f_void_t) (void);
+typedef void (*void_f_int_pvoid_t)(int, void*);
typedef int (*int_f_int_pvoid_t)(int, void*);
typedef int (*int_f_pvoid_pvoid_t) (void *, void *);
typedef int (*int_f_cpvoid_cpvoid_t) (const void *, const void *);