www.pudn.com > 43680498viterbidecode.rar > metric.m

function distance=metric(x,y) 
if x==y 
    distance=0; 
else  
    distance=1; 
end 
% switch (y) 
% case 0 
%     if x==0 
%         distance=0.0458; 
%     end 
%     if x==1 
%         distance=2; 
%     end 
%     if x==2; 
%         distance==1.0458; 
%     end 
% case 1 
%     if x==0 
%         distance==2; 
%     end 
%     if x==1 
%         distance=0.0458; 
%     end 
%     if x==2 
%         distance=1.0458; 
%     end 
% otherwise, 
%     break; 
% end