MATLAB: When I use MATLAB coder for a typecast function, I get an unsupported class error

MATLABmatlab coder

When I use MATLAB coder for the following function, I get an unsupported class error.

function y = foo(x)
y = typecast(x, 'UINT32')
end

Best Answer

The second argument in "typecast" should not be capitalized.

For example:

function y = foo(x)
y = typecast(x, 'uint32')
end

Related Solutions

MATLAB: Do I get a found an mxArray error pointing to a variable that has a value from a function declared as coder.extrinsic

You need to explicitly mention the type for the variable that is receiving values from a function declared as coder.extrinsic. If not, MATLAB will return value of type mxArray.

Sample code's answer:

coder.extrinsic('get_param');

x = double(0);

x = get_param(<modelname/block>,'Value');

y = x + 5;

MATLAB: How to pass a javaArray of Doubles to a method that takes double[] arguments from MATLAB

java.lang.Double is an object wrapper around the Java double builtin data type. Arrays of java.lang.Doubles cannot be used as arguments to methods that expect double[].

To call methods with these signatures, use a MATLAB array of doubles:

ma = [11 12];
b = mySum.sum(ma)

This returns the expected result:

 b =
     23

Note that the argument is converted automatically, as the array "ma" above, is passed by value.

For more information about the passing data to Java functions from MATLAB see the link below.

Passing Built-In Types :: Using Sun Java Classes in MATLAB (External Interfaces)

https://www.mathworks.com/help/releases/R2016b/matlab/matlab_external/passing-data-to-a-java-method.html

For more information about the differences between double and java.lang.Double, refer to a Java resource.

Best Answer

Related Solutions

MATLAB: Do I get a found an mxArray error pointing to a variable that has a value from a function declared as coder.extrinsic

MATLAB: How to pass a javaArray of Doubles to a method that takes double[] arguments from MATLAB

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