Hi,
From my understanding you are trying to use a Alias Type my_float in your Simulink model and generate code. The correct way to do this is as follows.
function out = foo(in1) %#codegen
%out needs to be of type 'my_float' which is a simulink alias type
%in1 is of type boolean
if in1
out= 5;
else
out= 4;
end
And set the data type for the output block connected to out as you alias data type. This can be done as follows.
>> set_param('model_name/Out1','OutDataTypeStr','my_float')
For more information the following documentations should help
