Do you have the Matlab C compiler?

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FAQ731-376: Eng-Tips.com Forum Policies

The standard compiler I believe is LCC

Fe

see: http://www.mathworks.com/products/compiler/description1.html

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FAQ731-376: Eng-Tips.com Forum Policies

I think the question was calling Matlab functions from a standalone C++ program.  This is the other way around to the common use of C-MEX functions by Matlab.  The mechanism is the Matlab Engine.  I've not used it myself, but have seen several threads in another forum describing it.  Here is a link:

http://www.mathworks.com/access/helpdesk/help/techdoc/matlab_external/f29148.html

Don't get confused by the term "Matlab Compiler", this is a deployment tool.

Matlab does ship with LCC, but be aware that this is a C compiler and will not build C++ programs.

- Steve

Great. I'll go through the compiler documentation and see if I get it clear.

Thanks!

Hey, I have the Matlab Compiler, and there's many options. The one I want is buiding a C++ library.

Apparently I have to use the command MCC, and in its help it says :

MCC MATLAB to C/C++ Compiler (Version 4.0).
MCC [-options] fun [fun2 ...]

OPTIONS:

B <filename>[:<arg>[,<arg>]] Specify bundle file. <filename> is a text file
    containing Compiler command line options. The Compiler behaves as if the
    "-B <filename>" were replaced by the contents of the bundle file. Newlines
    appearing in these files are allowed and are treated as whitespace.
    The MathWorks provides options files for the following:


        cpplib    Used for building a C++ library

The thing is that it doesn't work that way, or maybe I'm missing something.

Attached is the matlab code I want to convert to C++.

Thanks
 

• http://files.engineering.com/getfile.aspx?folder=0e14f8c0-95aa-4584-9a7e-55

There is no built in function (in a library) that does FFT for C++, at least I know of none.
You need to write your own C++ code that does FFT. Do it in discrete form. I'd give you the one I wrote for this, but then I'd have to "sue" you.
It's best if you learn this by doing it, so to speak.
 

Fe

I'm still not clear on the original requirement.

a) Convert the Matlab code into equivalent C++ and incorporate that C++ into your program.

b) Retain your Matlab code, but somehow call it from your C++ program.

c) Other.

===

a) The "Matlab compiler" will not help you here.  You will almost certainly need to either rewrite the math code in C++.  There are some free Matrix class libraries out there.  Or you could write your own.  I wrote my own when I needed to convert someone elses Matlab into C++.  It's educational.

b) As I said, the Matlab Engine is designed for this.  It will consume a Matlab license when it runs though of course.

c) ??

- Steve

I don't know, I readed that in many places, that you could build a C++ library with the Matlab compiler, using matlab code... but yeah, anyway, I guess I'll do it all in C++. Doing the fft in C++ is not a problem, I have it already, the thing is that I have a lot of data from different tests I did with Matlab and now I'll have to do it all again.

Thanks people!