iszero.m

多小波图像压缩处理

function yesno = iszero(S)

S = simplify(S(:));
try 
    S = double(S);
    yesno = iszero(S);
catch
% If S contains symbolic variables without numerical values,
% the conversion to "double" will fail. Then we end up here.
    yesno = 0;
end