Ah, now I get your question. So, it is a function declaration, not a function call. Um, sorry: a declaration of a pointer to a function, where this function wou

Ah, now I get your question. So, it is a function declaration, not a function call. Um, sorry: a declaration of a pointer to a function, where this function would take as arguments: some (unnamed) void pointer, some (unnamed) int value, and some (unnamed) size_t value; and would return a void pointer. Um; then there's the equal sign, so this is not only a declaration, but a definition too; but definitely not a call. A call is further down in the original blogpost, in the below line: (memset_ptr)(p, 0, len);