Mex API changes for 64bit

[John W. Eaton]

On  2-Jun-2007, David Bateman wrote:

| As documented in the Matlab release notes for R2006b at
| 
| http://www.mathworks.com/access/helpdesk/help/techdoc/rn/bqt6wtq.html
| 
| two new types have been introduced to allow for 64-bit indexing into the
| mex API. These are mwIndex for the indexing values and mwSize for sizes
| of arrays, etc. They suggest at least that both are "int" normally, but
| if the -largearraydims flag is used with mex or on a 64-bit platform,
| then they are of type "size_t". I'd suggest it probably makes sense for
| Octave to just typedef these to octave_idx_type.
| 
| In any case the attached patch is an attempt to take these 64bit API
| changes in the mex interface into account. I used the matlab external
| API documentation of their website to get the new function prototypes
| and then updated the underlying code to match. I probably missed a
| couple of conversions of int -> {mwSize,mwIndex}, but at least for
| 32-bit systems that shouldn't be a big issue as mwIndex and mwSize both
| resolve to "int".

OK, please check in the changes.

| I imagine without this patch the mex interface was probably broken on
| 64-bit platforms in any case.

I think it would only be a problem if with --enable-64.

Thanks,

jwe