MATLAB: How to implement a custom datatype in Simulink model So, that the generated code is same as Union datatype in C.

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The closest alternate will be Structure of structure using bus in Simulink.

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As far as I know, Simulink never generates Union for any built-in data class.

For your requirement, you need to create your own data class and custom staorage class.

Check cscdesigner in your matlab help.

Related Solutions

MATLAB: Datatypes

Your command

double e1,e2,e;

is equivalent to

double('e1')
e2
e

'e1' is a string, which is an array of character, and applying double to the array of character returns the numeric values of each of the characters: that happens to be 101 for 'e' and 49 for '2'. For more information on this, please see Command vs Function syntax

In MATLAB, one does not declare variables as being of a particular type: one just assigns values and the variable assumes the type of the values if the variable appears by itself (without any kind of indexing) in an assignment syntax.

MATLAB: Matrix unions

You can use a real handy function called ismember() to test elements of A against elements of B. Then it's just a matter of indexing:

in = ismember(A,B);
C = nan(size(A));
C(in) = A(in);

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MATLAB: Datatypes

MATLAB: Matrix unions

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