这个演员做什么？

Question

I was taking a look at some code for a microcontroller when I came across this cast:
(void (*) (void))ROM_FPUTABLE[8]
I was wondering what it actually does. Any ideas?

Answer 1

void (*) (void) specifies a pointer to a function, which returns nothing, and takes no arguments.

Therefore (void (*) (void)) casts something to a pointer to a function, which returns nothing, and takes no arguments.