* implementation problem in C
@ 2003-01-30 15:09 David Janssens
2003-01-30 15:23 ` Momchil Velikov
0 siblings, 1 reply; 2+ messages in thread
From: David Janssens @ 2003-01-30 15:09 UTC (permalink / raw)
To: gcc-help
Can someone please help me with this simple implementation problem in C:
I have a table in which each entry designates a pointer to some function,
the number of argument it expects and if it returns a value:
typedef struct {
void *func;
int argc, ret;
} call_t;
call_t call_table[]={
{func1, 3, 0},
{func2, 2, 1},
{func3, 3, 1},
...
}
Now suppose that I have the index to the function I want to call and all the
values of the parameters required, how do I call this function with the
proper parameters passed?
In C, I know how to call a function from a function pointer if the number of
arguments is known statically. But in this case, the number of arguments in
known only dynamically.
thanks,
David
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: implementation problem in C
2003-01-30 15:09 implementation problem in C David Janssens
@ 2003-01-30 15:23 ` Momchil Velikov
0 siblings, 0 replies; 2+ messages in thread
From: Momchil Velikov @ 2003-01-30 15:23 UTC (permalink / raw)
To: David Janssens; +Cc: gcc-help
>>>>> "David" == David Janssens <dja@info.ucl.ac.be> writes:
David> Can someone please help me with this simple implementation problem in C:
David> I have a table in which each entry designates a pointer to some function,
David> the number of argument it expects and if it returns a value:
In GCC, try ``__builtin_apply''. Alternatively, you may want to
recode the functions to take variable number of arguments.
~velco
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2003-01-30 15:23 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2003-01-30 15:09 implementation problem in C David Janssens
2003-01-30 15:23 ` Momchil Velikov
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).