function [y,e] = sigmadelta(x)
N = length(x);
y = zeros(1,N);
a = y;
b = y;
c = y;
d = y;
e = y;
for i = 1:1:N
%for i = 2:1:N
iprev = max(1,i-1); % obchodzi iterowanie dla ujemnych 'i' dla poczatkowych indeksow
d(i) = y(iprev);
%d(i) = y(i-1);
a(i) = x(i) - d(i);
c(i) = b(iprev);
%c(i) = b(i-1);
b(i) = c(i) + a(i);
if b(i)>0
y(i) = 1;
else
y(i) = -1;
end
e(i) = y(i)-b(i);
end
end
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}
