From help-octave-request at bevo dot che dot wisc dot edu Sun Feb  1 01:53:07 2004
Subject: Re: varargout form a DLD function
From: Shai Ayal <shaia at biocontrol dot co dot il>
To: Geraint Paul Bevan <g dot bevan at eng dot gla dot ac dot uk>
CC: help-octave <help-octave at bevo dot che dot wisc dot edu>
Date: Sun, 01 Feb 2004 15:51:13 +0200

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Essentially you suggest returning a list for the function. This is a 
nice trick which solves my problem completely

Thanks for the help

	Shai

Geraint Paul Bevan wrote:
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> Shai Ayal wrote on 01/29/04 22:10:
> | Hi all,
> |
> | I am trying to return a variable number of arguments from a DLD function
> |
> 
> |
> | however, I cannot recover these arguments at the command line:
> 
> |
> | Note that if I know the number of arguments I can get them as in line 4.
> | but what if I don't know beforehand ? Is there something similar to
> | varargin{:} for output arguments ?
> |
> |     Shai
> |
> 
> 
> You can return a variable number of arguments by returning an
> octave_value_list as the first element of retval:
> 
> 
> ~/test:
> $ cat varargouttest.cc
> #include <octave/oct.h>
> 
> DEFUN_DLD (varargouttest, args, nargout, "")
> {
>     octave_value_list retval, retval2;
>     for (int i = 4; i >= 0; i--) {
>         retval2(i) = octave_value (1 + i);
>     }
>     retval(0) = retval2;
>     nargout = 5;
>     return retval;
> }
> ~/test:
> $ mkoctfile varargouttest.cc
> ~/test:
> $ octave -q
> octave:1> varargouttest
> ans =
> (
> ~  [1] = 1
> ~  [2] = 2
> ~  [3] = 3
> ~  [4] = 4
> ~  [5] = 5
> )
> octave:2>
> 
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> =5JaE
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> 
> 
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fn:Shai  Ayal
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org:BioControl Medical
adr:;;3 Geron St.;Yahud;;56100;Israel
email;internet:shaia at biocontrol dot co dot il
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