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Topic: Getting an array into a C program through mathlink
Replies: 2   Last Post: Apr 2, 2013 3:26 AM

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Posts: 60
Registered: 9/24/11
Getting an array into a C program through mathlink
Posted: Mar 14, 2013 7:12 AM
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Hello, I've been wrestling with this example code from the manual to try to
get a numerical array to a C program through mathlink. But how does one set
up the template file for this kind of program (e.g. setting up a pattern to
actually call the program in Mathematica)? I tried to guess how to write a
template for this code, but nothing seemed to work (primarily errors about
incompatible types).

void f(MLINK lp)
> {
> double *data;
> int *dims;
> char **heads;
> int d; /* stores the rank of the array */
> if(! MLGetReal64Array(lp, &data, &dims, &heads, &d))
> {
> /* unable to read the array from lp */
> return;
> }
> /* ... */
> MLReleaseReal64Array(lp, data, dims, heads, d);
> }

I've got some functions using simple data types working using Mathlink,
and I even go the MLPut*Array type functions working. It's just getting an
array from mathematica in to an external (C) program that I haven't found
much detailed information in the manual about. A lot of examples like these
that aren't really functional as is.

Thank you in advance

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