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From: Savian on 12 Dec 2009 18:36
On Dec 12, 3:29 pm, Francogrex <fra...(a)grex.org> wrote:
> On Dec 12, 11:17 pm, Savian <savian....(a)gmail.com> wrote:
>
> > I cannot answer your direct question since I have never used modulen
> > but let me ask a few questions that might lead to alternatives
> > (assuming others cannot give a direct response).
>
> > 1. What O/S are you running on?
> > 2. Can you skip a datastep and use an X command instead?
> > 3. Do you have a data volume problem?
>
> > If I need processing external to SAS (which I do on every single
> > project), I tend to code it up and read in the SAS datasets, process,
> > then put it back into SAS format. This does not work with large volume
> > but it is an idea. That way, I control all aspects of the interface.
>
> I use winXP. I know how to pipe commands to a cmd, write to external
> temp files that other programs can use and spit back their outputs
> into sas, but that's not what I want, sorry. I really need to pass an
> array as an argument to a dll and get back an array of values in
> return. I know how to get an array of values in return (see below),
> what is still missing is passing the array to the dll as one argument.
>
> This works because arguments are not pointers
> sas.c file:
> EXPORT double __stdcall *test (double x, double y,int n)
> {
>   double *end=malloc((n+5)*sizeof(double));
>   int i;
>   for (i=0; i<n; i++)
>     {
>       *(end+i)=(x+y)*i;
>     }
>   return(end);
>
> }
>
> filename sascbtbl catalog 'work.api.myfile';
> data _null_;
>     file sascbtbl;
>     input;
>     put _infile_;
>     cards4;
>     routine test
>         minarg=3
>         maxarg=3
>         stackpop=called
>         module=sas
>                 returns=long;
>
> arg 1 num input byvalue format=RB8. ;
> arg 2 num input byvalue format=RB8. ;
> arg 3 num input byvalue format=PIB4. ;
> ;;;;
> run;
> data _null_;
>     rc = modulen ('*e', 'test', 7.3, 4.6, 15);
>         do i=0 to 14*8 by 8;
>     testme=peek(rc+i,8);
>         put testme=;
>         end;
> run;

Do you have control of the dll or is it 3rd party?

Alan
From: Barry Schwarz on 12 Dec 2009 18:53
On Sat, 12 Dec 2009 13:17:39 -0800 (PST), Francogrex <franco(a)grex.org>
wrote:

>On Dec 12, 5:45�pm, Barry Schwarz <schwa...(a)dqel.com> wrote:
>> You allocate an array of n+5 doubles.
>>
>> > �int i;
>> > �for (i=0; i<n;i++)
>> > � �{
>> > � � �*end=x[i]*2;
>>
>> You repeatedly store different values in the first element of that
>> array. �Obviously, only the last value stored survives in the element.
>> The remaining n+4 elements have indeterminate values. �
>>
>> Did you intend instead
>> � � �end[i] = x[i] * 2;
>> This will populate the first n elements of the array. �The last 5 will
>> still be indeterminate.
>>
>
>Oops yes it was a typing error while I was typing it here in the
>newsgroup; that line above should read: *(end+i)=x[i]*2;
>Of course since it is correct in the original C file that compiled to
>the sas.dll my stated problem before still remains. Any suggestions?

Don't retype. Use copy and paste.

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From: Francogrex on 13 Dec 2009 04:17
On Dec 13, 12:36 am, Savian <savian....(a)gmail.com> wrote:
> Do you have control of the dll or is it 3rd party?

I make it myself from the C file I showed above.
From: Francogrex on 13 Dec 2009 13:21
On Dec 13, 10:17 am, Francogrex <fra...(a)grex.org> wrote:
> On Dec 13, 12:36 am, Savian <savian....(a)gmail.com> wrote:
>
> > Do you have control of the dll or is it 3rd party?
>
> I make it myself from the C file I showed above.

ok since I got no solutions then I guess it's either not possible or
I'll need to ask the sas developers at the sas institute because the
programmers don't seem to know about it.
From: Savian on 13 Dec 2009 15:45
On Dec 13, 11:21 am, Francogrex <fra...(a)grex.org> wrote:
> On Dec 13, 10:17 am, Francogrex <fra...(a)grex.org> wrote:
>
> > On Dec 13, 12:36 am, Savian <savian....(a)gmail.com> wrote:
>
> > > Do you have control of the dll or is it 3rd party?
>
> > I make it myself from the C file I showed above.
>
> ok since I got no solutions then I guess it's either not possible or
> I'll need to ask the sas developers at the sas institute because the
> programmers don't seem to know about it.

Why not use an X command and pass the array in an XML file? You could
also just pass it as a command line argument but I would use XML
instead. Also consider using C# since you are on Windows. C is very
old school. Yes, it works, but consider alternatives. C# EASILY
handles XML so you could be running it in no time.

Richard D. could answer it but he probably doesn't post on the
weekends.

Alan
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