I understand that you are using Lookup Table Optimizer to optimize the function written in a MATLAB Function Block in Simulink for HDL Code generation. I was able to reproduce the error using the function you provided. The error dialog I received is shown below:
Since the function is already time invariant and stateless, this suggests that the error is due to operations * and / and these need to be converted into element-wise operations.
To convert * and / operations into element-wise operations, you can change the last line to:
T=(C./(D.*(log(input)-A))).*B;
I hope this might be helpful in resolving your query.
You may refer the following documentation link for more information about Lookup Table Optimizer:
