* #define register_callback(fn, arg) \
* _register_callback(typesafe_cb_def(void, (fn), (arg)), (arg))
*/
-#define typesafe_cb_def(rtype, fn, arg) \
- cast_if_any(rtype (*)(void *), (fn), (fn)+0, \
- rtype (*)(typeof(*arg)*), \
- rtype (*)(const typeof(*arg)*), \
+#define typesafe_cb_def(rtype, fn, arg) \
+ cast_if_any(rtype (*)(void *), (fn), 0?(fn):(fn), \
+ rtype (*)(typeof(*arg)*), \
+ rtype (*)(const typeof(*arg)*), \
rtype (*)(volatile typeof(*arg)*))
/**
* _register_callback(typesafe_cb_exact(void, (fn), (arg)), (arg))
*/
#define typesafe_cb_exact(rtype, fn, arg) \
- cast_if_type(rtype (*)(void *), (fn), (fn)+0, rtype (*)(typeof(arg)))
+ cast_if_type(rtype (*)(void *), (fn), 0?(fn):(fn), \
+ rtype (*)(typeof(arg)))
/**
* typesafe_cb_const - cast a const callback function if it matches the arg
* (arg))
*/
#define typesafe_cb_preargs(rtype, fn, arg, ...) \
- cast_if_type(rtype (*)(__VA_ARGS__, void *), (fn), (fn)+0, \
+ cast_if_type(rtype (*)(__VA_ARGS__, void *), (fn), 0?(fn):(fn), \
rtype (*)(__VA_ARGS__, typeof(arg)))
/**
* (arg))
*/
#define typesafe_cb_postargs(rtype, fn, arg, ...) \
- cast_if_type(rtype (*)(void *, __VA_ARGS__), (fn), (fn)+0, \
+ cast_if_type(rtype (*)(void *, __VA_ARGS__), (fn), 0?(fn):(fn), \
rtype (*)(typeof(arg), __VA_ARGS__))
/**
* typesafe_cb_cmp(int, (cmpfn), (base)), (arg))
*/
#define typesafe_cb_cmp(rtype, cmpfn, arg) \
- cast_if_type(rtype (*)(const void *, const void *), (cmpfn), (cmpfn)+0, \
+ cast_if_type(rtype (*)(const void *, const void *), \
+ (cmpfn), 0?(cmpfn):(cmpfn), \
rtype (*)(const typeof(*arg)*, const typeof(*arg)*))
#endif /* CCAN_CAST_IF_TYPE_H */