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**Subject**: **Re: question about cdata type identification**
**From**: Geoff Leyland <geoff_leyland@...>
**Date**: Mon, 18 Apr 2011 20:35:37 +1200

On 18/04/2011, at 8:00 PM, Francesco Abbate wrote:
> The problem here is that for the arithmetic operators I need to know
> if the operands are real or complex number or real or complex
> matrices. The problem is that if I use the 'type' function I get can
> obtain just 'number' or 'cdata' and I have no means to discriminate
> between, for example, a complex number and a matrix because both are
> cdata.
Can you give your cdata metatables (you must be doing that already given that they support math operators) and compare the metatables?
Cheers,
Geoff