function [sys,x0,str,ts]=angle_a(t,x,u,flag)
switch flag,
case 0,
    [sys,x0,str,ts]=mdlInitializeSizes;
case 3,
    sys=mdlOutputs(t,x,u);
case{1,2,4,9}
    sys=[];
otherwise
    error(['Unhandled flag =',num2str(flag)]);
end
function [sys,x0,str,ts]=mdlInitializeSizes
sizes=simsizes;
sizes.NumContStates=0;
sizes.NumDiscStates=0;
sizes.NumOutputs=8;
sizes.NumInputs=16;
sizes.DirFeedthrough=1;
sizes.NumSampleTimes=1;
sys=simsizes(sizes);
x0=[];
str=[];
ts=[0,0];
function sys=mdlOutputs(t,x,u)
sys=[(pi/4).*(u(1)>0&u(2)>0)+(3*pi/4).*(u(1)<0&u(2)>0)+(5*pi/4).*(u(1)<0&u(2)<0)+(7*pi/4).*(u(1)>0&u(2)<0),
    (pi/2).*((u(3)+u(4))>0&(u(4)-u(3))>0)+pi.*((u(3)+u(4))<0&(u(4)-u(3))>0)+(3*pi/2).*((u(3)+u(4))<0&(u(4)-u(3))<0)+0.*((u(3)+u(4))>0&(u(4)-u(3))<0),
    (pi/2).*((u(5)+u(6))>0&(u(6)-u(5))>0)+pi.*((u(5)+u(6))<0&(u(6)-u(5))>0)+(3*pi/2).*((u(5)+u(6))<0&(u(6)-u(5))<0)+0.*((u(5)+u(6))>0&(u(6)-u(5))<0),
    (pi/4).*(u(7)>0&u(8)>0)+(3*pi/4).*(u(7)<0&u(8)>0)+(5*pi/4).*(u(7)<0&u(8)<0)+(7*pi/4).*(u(7)>0&u(8)<0),
    (pi/4).*(u(9)>0&u(10)>0)+(3*pi/4).*(u(9)<0&u(10)>0)+(5*pi/4).*(u(9)<0&u(10)<0)+(7*pi/4).*(u(9)>0&u(10)<0),
    (pi/2).*((u(11)+u(12))>0&(u(12)-u(11))>0)+pi.*((u(11)+u(12))<0&(u(12)-u(11))>0)+(3*pi/2).*((u(11)+u(12))<0&(u(12)-u(11))<0)+0.*((u(11)+u(12))>0&(u(12)-u(11))<0),
   (pi/2).*((u(13)+u(14))>0&(u(14)-u(13))>0)+pi.*((u(13)+u(14))<0&(u(14)-u(13))>0)+(3*pi/2).*((u(14)+u(13))<0&(u(14)-u(13))<0)+0.*((u(13)+u(14))>0&(u(14)-u(13))<0),
    (pi/4).*(u(15)>0&u(16)>0)+(3*pi/4).*(u(15)<0&u(16)>0)+(5*pi/4).*(u(15)<0&u(16)<0)+(7*pi/4).*(u(15)>0&u(16)<0)];
end