Convert Matlab floating point function to fixed point

[Milruwan]

I need to convert a simple floating point function to fixed point in order to generate hdl code. Following is the function.

function y = fun(u)
%#codegen
if(u<0)
    y=0;
else
    y=u;
end

How to convert this function to fixed point. Please help me.

 

[yourcheers]

if you just want to check the number is lessthan zero and perform some operations, you can as well check the sign bit of the fixed point number and take some action.

if(num[sign_bit] == 1)
y = 0;
else
y = u;

hope this helps.