CDECL Utility

["Jérôme M. Berger"]

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Jarrett Billingsley wrote:
> ""J�r�me M. Berger"" <jeberger at free.fr> wrote in message 
> news:fl6jpl$1git$1 at digitalmars.com...
> 
>>> void function(int sig, void function(int))(int) signal;
>>                                            ^^^^^
>>> Pointer to a function that takes (an int and a (pointer to a function 
>>> that
>>> takes an int and returns void)) and returns void.
>>>
>> What's that "(int)" doing here? And would that even compile?
> 
> I was trying to convert the C declaration into D from the cdecl page.. I 
> have no idea what the (int) is doing in _that_ decl, but it at least is not 
> valid D :o
> 
	Apparently cdecl doesn't like it either :D :

cdecl> explain void (*signal(int sig, void (*func)(int)))(int);
syntax error

	However if you remove the parameter names in the declaration, you get:

cdecl> explain void (*signal(int, void (*)(int)))(int);
declare signal as function (int, pointer to function (int) returning
void) returning pointer to function (int) returning void

	So I think that the proper D declaration would be:
void function (int sig, void function (int)) function (int) signal;

	And like you said, the D way does not need something like cdecl to
be interpreted (in fact, I find the D declaration clearer than the
cdecl output).

		Jerome
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