On: Object oriented programming with ANSI-C (1993) [pdf]

[sigjuice]

You can adjust your function pointer typedefs if you like. e.g. signal(2) http://man7.org/linux/man-pages/man2/signal.2.html

  typedef void (*sighandler_t)(int);
  sighandler_t signal(int signum, sighandler_t handler);

can be rewritten as

  typedef void sighandler_t(int);
  sighandler_t *signal(int signum, sighandler_t *handler);