Is there a native Simulink feature to trigger an error/warning when overflow from an 'enum' class instance occurs?

Question

MathWorks Support Team 2020-10-29

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/630283-is-there-a-native-simulink-feature-to-trigger-an-error-warning-when-overflow-from-an-enum-class-in

回答： MathWorks Support Team 2020-10-29

I have created an enum class (see below) which inherits from uint8 and it seems that there is no overflow error/warning from Simulink when loading testEnumClass.varC as an enumerated constant in Simulink.

classdef testEnumClass < uint8
  enumeration
    varA(1)
    varB(2)
    varC(1000)
  end
end

Is there a native Simulink feature to trigger an error/warning, when there is such overflow, so that I can catch the wrong enum definitions in my model?

请先登录，再回答此问题。

Answer 1

MathWorks Support Team 2020-10-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/630283-is-there-a-native-simulink-feature-to-trigger-an-error-warning-when-overflow-from-an-enum-class-in#answer_527803

You can rewrite the enum definition using Simulink.defineIntEnumType, after which Simulink will raise an error if a value overflows.

The new enum definition can look like the following:

Simulink.defineIntEnumType('testEnumClass', ... 
 {'varA', 'varB', 'varC'}, ...
 [1;2;1000], ... 
 'Description', 'Example', ...
 'DefaultValue', 'varA', ...
 'StorageType', 'uint8');

This produces the error: Underlying numeric values do not fit into the specified StorageType when loading testEnumClass.varC as an enumerated constant.