Function declarations

fundecl	::=	[fn_ctype] funinfo^* funid ([PARAMSEQ(param, ε)]) `{` [stmt_seq] `}`
funproto	::=	[fn_ctype] funinfo^* funid ([PARAMSEQ(param, ε)]);
funinfo	::=	inline
	\|	storage
storage	::=	static
	\|	auto
	\|	register
	\|	extern
funid	::=	id
	\|	metaid^Id
param	::=	type id
	\|	metaid^Param
	\|	metaid^ParamList
decl	::=	ctype id
	\|	fn_ctype (* id) (PARAMSEQ(name_opt_decl, ε))
	\|	void
	\|	metaid^Param

6 Function declarations