Path: utzoo!attcan!uunet!ncrlnk!ncrcae!hubcap!gatech!ncar!tank!mimsy!sjr
From: sjr@mimsy.UUCP (Stephen J. Roznowski)
Newsgroups: comp.lang.c
Subject: Passing types to a subroutine
Message-ID: <14457@mimsy.UUCP>
Date: 10 Nov 88 01:26:15 GMT
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 50

I'm in the process of developing a piece of code that needs
to be portable across several different machines.  What I
need to do is something of the following:

main()
{
	...

	float	a[100];

	subroutine(...., a[100], ...);
	}

AND

main()
{
	...

	double	a[100];

	subroutine(...., a[100], ...);
	}

and have the subroutine do the right thing with a[].
Eventually, the subroutine needs to so something like:

subroutine(....,array,....)

[???]	*array;
{
	unsign int	i;
	int		scale;
	float		bias;

	...
	array[20] = (cast ???) i * scale + bias;

	}

How do you pass the knowledge of the array type to the
subroutine?  I need to be able to pass the knowledge
that the array a[] is either float or double (or for
that matter unsign int).

Any help will be greatly appreciated.

Stephen J. Roznowski                 sjr@mimsy.umd.edu
-- 
Stephen J. Roznowski                 sjr@mimsy.umd.edu