hz_resize.m

Accelerating execution speed of fixed-point algorithms in MATLAB and Simulink

function y=hz_resize(R,Rout,Nr,Nc)
%% Take input matrix with Nr rows and Nc colums and 
% output Rout matrix with half rows and half columns
for i=1:2:(Nr-1)
    for j=1:2:(Nc-1)
        x = [R(i,j),R(i,j+1);R(i+1,j),R(i+1,j+1)];
        acc=fi(0,0,10,0);
        [xout,acc]=hz_average2(x,acc);
        Rout(((i+1)/2),((j+1)/2))=xout;
    end
end
y=Rout;