Limitations to C/C++ Support
You can create a MATLAB® interface to 64-bit compiled libraries based on C++98 and commonly occurring C++11 features. However, if a library contains the following data types or language features, then the functionality is not included in the MATLAB interface to the library. You might be able to include this functionality by creating a wrapper header file. For more information, see C++ Limitation Workaround Examples.
Data Types Not Supported
Any type with a size greater than 64 bits, for example
References to a pointer, for example
Pointers or arrays of
Pointers or references to enumerations
Vectors of pointers to class objects, for example
Reference data members
Multidimensional data member arrays
Modifying static data members
**pointers to custom classes used as function or method parameter types.
void**used as function or method parameter types.
Multilevel pointers, such as
C function pointers and
std::functionas function return types or data members. You also cannot pass a MATLAB function as input to C function pointers or
Class templates with incomplete or no instantiations
Types defined in the
stdnamespace, except these supported types:
Messages About Unsupported Types
If a library uses these data types, then the functionality is not included in the MATLAB interface to the library, and MATLAB displays messages like:
Did not add member 'methodName' to class 'ClassName' at HeaderFile.h:290. 'long double' is not a supported type.
Language Features Not Supported
C++ operator overload
Unnamed namespaces and classes
Preprocessor directives (macros)
Function templates with incomplete or no instantiations
Creating objects of classes in
stdnamespace, including custom classes.
Smart pointer semantics. Only
std::shared_ptris supported. MATLAB does not support operator overloads, move semantics, and the member functions in the class definition of the smart pointer which might restrict their effectiveness. Instead, a
std::shared_ptr<T>behaves as type
Tin MATLAB. Type
Tcan be passed as input for
std::shared_ptr<T>, and type
Tis received as output for
Namespace aliases. Use original namespace name instead.
When you build a library containing these features or usage, MATLAB displays:
Warning: Some C++ language constructs in the header file are not supported and not imported.
Saving C++ objects into a MAT-file is not supported.
Inheriting C++ class in MATLAB
MATLAB does not support creating MATLAB classes that inherit a C++ interface class.
Unsupported Class Methods
MATLAB does not support implementing operators by defining these associated functions.
Method to Define
a(s1,...,sn) = b