×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

C++ or C with S-Function Builer from Simulink?

C++ or C with S-Function Builer from Simulink?

C++ or C with S-Function Builer from Simulink?

(OP)
Hello everyone,

I went through the documentation for the S-Function Builder from Mathworks, but I do not know if it is possible use c++ with S-Function Builder or just C.

I did some test and I wrote the same code for a C and for a C++ using a S-Function Builer. For the one in C I did not get errors, but for the one in C++ I got linking errors.

In the Mathworks documentation, the S-Function Builder is inside the topic "Writing S-Functions in C", but not inside "Creating C++ S-Functions"; that is why my question.

Any hint or any help would be really appreciated.

Thank you very much for your help

RE: C++ or C with S-Function Builer from Simulink?

You should be able to write it in C or C++.
The older versions of Matlab I believe only worked with C.

Also, you can write one in m-code now I believe. ie. using it to solve some DE's or the like.  

peace
Fe

RE: C++ or C with S-Function Builer from Simulink?

There used to be many similar questions in comp.soft-sys.matlab about this.  The usual issue was that the poster was trying to use lcc (rubbish free C compiler supplied with Matlab) to compile code that was actually only C in functionality, but contained some trivial C++ constructs.

If all you need is C functionality, stick to C.

- Steve
 

RE: C++ or C with S-Function Builer from Simulink?

(OP)
Hi Fex32 and SomptingGuy,

First of all thank you very much for your answer.

About the S-Builder functions I have decided to use C instead of C++. I was doing some test. I wrote a function with a loop in Visual Studio 2010. I called this function from Simulink, and the same function with a C file I got no errors, but in C++ I got a link error, which I did not understand why. I do not know if it is maybe the Matlab version I use, which is R2010b.

SomptingGuy I am agree with you about llc. It is rubbish. I use VS2010 as a compiler.

Regards, waso

RE: C++ or C with S-Function Builer from Simulink?

<rant>

I get annoyed at people who think C/C++ is a language.  It's two languages, similar, but with striking differences.  I get even more annoyed when people slip C++isms into C code and don't even know they're doing it.

</rant>

- Steve
 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close