Hi Eric,
I understand that when using MATLAB Coder to generate C code, it often optimizes the code by removing unusual fields from structures. However, if you want to to ensure that all fields in a structure are preserved in the generated C code, you can use the coder.cstructname function to enforce the inclusion of all fields, even if they are not used in the current MATLAB code.
Below is a brief demonstation on how you can do it:
% Define the structure with 20 fields
structDef = struct('field1', 0, 'field2', 0, 'field3', 0, 'field4', 0, 'field5', 0, ...
'field6', 0, 'field7', 0, 'field8', 0, 'field9', 0, 'field10', 0, ...
'field11', 0, 'field12', 0, 'field13', 0, 'field14', 0, 'field15', 0, ...
'field16', 0, 'field17', 0, 'field18', 0, 'field19', 0, 'field20', 0);
% Function definition
function myFunction(structInput)
%#codegen
% Preserve all fields in the structure
coder.cstructname(structInput, 'MyStructType');
% Your function implementation
% For example, using only 5 fields currently
result = structInput.field1 + structInput.field2 + structInput.field3 + ...
structInput.field4 + structInput.field5;
end
Kindly have a look at the following documentation links to have more information on:
- 'coder.cstructname' : https://www.mathworks.com/help/simulink/slref/coder.cstructname.html
Hope that helps!
Balavignesh
