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Date: Mon, 4 Apr 2005 20:47:27 +0200
From: "Devon H. O'Dell " <dodell@offmyserver.com>
To: freebsd-hackers@freebsd.org
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Subject: Re: C programming question
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On Mon, Apr 04, 2005 at 11:43:21AM -0700, Matt wrote:
> I need some help understanding some C code.=20
>=20
> int     (*if_ioctl)
>        (struct ifnet *, int, caddr_t);
>=20
> int     (*if_watchdog)
>        (int);
>=20
> Can someone break down these declarations (if that's what they are)?  Is=
=20
> this a form of typecasting?  Thanks for your help.

These are pointers to functions accepting arguments of type:

struct ifnet *, int, caddr_t

and

int

both returning type integer. In the structure in which they are
defined, they can be called with=20
structure.if_ioctl(ifnet, int, caddr_t)

Kind regards,

Devon H. O'Dell

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