MATLAB: How to use the “reinterpretcast” function with a “Simulink.NumericType” object for the input

The command,
>> reinterpretcast(fi(2^4-1,0,4,0), fixdt(1,4,3))
produces the error
This parameter must be a numerictype object.
The reinterpretcast function requires the second input to be a numeric type. 
The command,
>> fixdt(1,4,3)
returns 
NumericType with properties: 
DataTypeMode: 'Fixed-point: binary point scaling' 
Signedness: 'Signed' 
WordLength: 4 
FractionLength: 3 
IsAlias: 0 
DataScope: 'Auto' 
HeaderFile: '' 
Description: ''
This indicates that it is a numeric type. 
The command
>> isnumerictype(fixdt(1,4,3))
returns 
ans = 
logical 
0
indicating it isn't a numeric type. 
This is inconsistent. 
How should I cast a FI number as a different FI type with the same storedInteger representation?

Best Answer

You can use the modified version of the code as follows:
>> reinterpretcast(fi(2^4-1,0,4,0), numerictype(fixdt(1,4,3)))
The result of "fixdt(1,4,3)" is a "Simulink.NumericType" object, whereas the "reinterpretcast" function requires a "numerictype" object for its input.
The documentation indicates that the former is a Simulink class / data type, while the latter is from Fixed-Point Designer.
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