% Custom sign function: sign0(x) = sign(x) if x != 0, 1 otherwise
function x = sign0(x)
if x == 0
x = 1;
return
end
x = sign(x);
end
% Custom sign function: sign0(x) = sign(x) if x != 0, 1 otherwise
function x = sign0(x)
if x == 0
x = 1;
return
end
x = sign(x);
end