How to deal with matlab functions that are unsupported when using Matlab Coder? (How can I transfer Matlab intrinsic function 'quadprog()' into C code using Matlab Coder?)

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dou
dou on 9 Jan 2013
Commented: yakun ma on 23 May 2022
I write a matlab function to realize some algorithm. When I use Matlab Coder to convert it into C code, it build failed with the following error:
The function 'quadprog' is not supported for standalone code generation. See the documentation for coder.extrinsic to learn how you can use this function in simulation.
error code is: Optimal=quadprog(H,f);
In fact, I want to know how to deal with matlab functions that are unsupported when using Matlab Coder.
Thanks for helping me.

Answers (3)

Kaustubha Govind
Kaustubha Govind on 9 Jan 2013
You can only generate standalone C/C++ code from functions supported for code-generation. You may either need to write your own C implementation for the function, or use MATLAB Compiler to deploy your MATLAB code. The code generated by MATLAB Compiler is not completely standalone (like that generated by MATLAB Coder), but depends on MATLAB run-time libraries, and therefore requires that each target machine either have the same version of MATLAB installed or have the corresponding version of the MATLAB Compiler Runtime installed.
  1 Comment
dou
dou on 11 Jan 2013
Thanks for your help. In fact, I write the core algorithm in matlab. And now I want to add it into my Android application. I have tried to change my matlab code into Java class and add .jar file into my project. But when I run the Android project on VM. It stopped with class (made from matlab code) not found error.Now I want to transfer my matlab code into standalone C code. Then made it into .so file in order to be added into android application.

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Mary Fenelon
Mary Fenelon on 21 Apr 2020
Code generation for quadprog is supported as of R2020a. Support for fmincon was added in R2019b.
  4 Comments
yakun ma
yakun ma on 23 May 2022
When H maxtrix is empty, the quadProg is not supported for code generation. How could we handle this case? My problem is a linear programming. But linprog is not supported for code generation. So I want to use quadProg instead.

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Fred Smith
Fred Smith on 10 Jan 2013
If you don't really need C code but are just running the function in MATLAB , you can often use CODER.EXTRINSIC to call the original MATLAB version. This probably won't work for QUADPROG since it probably takes a function handle as an argument. Function handles are not supported in extrinsic calls but almost everything else is.
If you really need C code because you are running in an environment that MATLAB natively does not support, then you can either write your own MATLAB implementation of the missing functionality, or use coder.ceval to bring in external C code that implements the functionality.
If you don't need C code and but do need to deploy your algorithm on a MATLAB-supported host, you can use MATLAB Compiler.
Good luck.
  2 Comments
Bill Chou
Bill Chou on 1 Jun 2016
For those interested, you may want to take a look at the webinar that talks about using MATLAB Coder to generate C code, then manually integrating it into an Android app via the JNI interface:

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