Passing types to a subroutine

[Stephen J. Roznowski]

In article <8853 at smoke.BRL.MIL> gwyn at brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>) writes:
>In article <14457 at mimsy.UUCP> sjr at mimsy.UUCP (Stephen J. Roznowski) writes:
>>How do you pass the knowledge of the array type to the
>>subroutine?
>
>You don't.  Types are dealt with at compile time, not run time.
>It is in fact possible for a pointer-to-float to be passed
>differently than a pointer-to-double.
>
>If you REALLY have to do this, consider casting the arguments
>(which should be "a", not "a[100]") to type pointer-to-void or
>pointer-to-char, and add another parameter to the subroutine
>that can be used to indicate how to "un-cast" the funny
>parameter.  The code for this won't be clean..

The problem is that I can't determine the array type
at compile time.  These subroutines are going to be part of
a library.

And you are right that the pointers may be different,
or at least have different alignment properties. Is this
true of the pointer-to-void or pointer-to-char?

Stephen

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Stephen J. Roznowski                 sjr at mimsy.umd.edu