MEX ERRORs: Calling C++ code from MATLAB
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I am trying to run this code (GZipped Tar Ball) in MATLAB. The main.m function calls a number of C files.
I am not overly familiar with C code. I have tried to mex it, so I can run the MATLAB script, but something is going wrong.
- I am running MATLAB 2009a on Vista. 32 bit.
- I type mex –setup and see that I have the default MATLAB complier installed (Though I do have visual studio installed with the latest SDK)
- Then I just type mex –fileName.c into the MATLAB command line (having cd’d to that dir). The command then fails with a whole host of error messages. EG Undeclared identifier ..., LCC pre-processor error: could not find file values.h
- I note that the readme file contains a note saying “This C program needs some declarations in TvarTypes.h”: I don’t know what this means. Maybe it is the reason I am getting these errors?
2 件のコメント
Ashish Uthama
2011 年 1 月 20 日
Did you try contacting the original author? This might help: http://naranja.umh.es/~atg/blog/archives/2007/01/entry_12.html
Walter Roberson
2011 年 1 月 21 日
Is the software in C or is it in C++ ? If it is in C++ then LCC would not be able to compile it. Tim's answer referencing a .c file suggests that it is written in C; Petter's answer suggests that it is C that includes reference to non-standard include files.
C and C++ are different languages; it is usually easier to interface to C than to C++ .
回答 (4 件)
Petter
2011 年 1 月 20 日
This piece of software is not written in standard C. The file "values.h" is not part of the standard. Basically whoever wrote the code did not care about portability.
0 件のコメント
mathworks2011
2011 年 1 月 20 日
1 件のコメント
Petter
2011 年 1 月 28 日
I meant that it is not written in standard C. Thus, there is no reason to expect it to run on other platforms, e.g. Windows.
Tim Love
2011 年 1 月 21 日
With 2010a on linux I did
mex Pfilter.c
I got a warning about memcpy, but it was otherwise ok. I then run main from within matlab. It chugged along merrily producing graphics and lines like
time = 1080 CpxOrder = 0 RealOrder = 1, particles 100
56208886549439840066583664670207701182657741587224844696409564724083792689410710678220961942270720085773761083617378352112101243224064.000 ----------------------------------------------------------
before seg-faulting. It's rather old C code, and memcpy usage might need tightening up, but it's not completely broken.
0 件のコメント
HANS
2018 年 3 月 19 日
Hi to all :)
I have name.mex function and many .cpp and .h files related to it. name.mex takes only 1xinf vector which is a complex double values inside and output is the same size vector.
I want to call this name.mex within C++. As I know I have to use "int mexCallMATLAB(int nlhs, mxArray *plhs[], int nrhs, mxArray *prhs[], const char *command_name);"
Please could anybody give a usage example in C++ ? I guess I have to use "ifstream" to load the data vector before I use the function but do I have to define via "mxArray" or ??
Thx, WR
0 件のコメント
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