Is there a native Simulink feature to trigger an error/warning when overflow from an 'enum' class instance occurs?
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MathWorks Support Team
on 29 Oct 2020
Answered: MathWorks Support Team
on 29 Oct 2020
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?
Accepted Answer
MathWorks Support Team
on 29 Oct 2020
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.
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