problem in code of hamming code:not able 2 analise if statements in hamming code...

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Diapanagar

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in the below code of hamming code how does that if statements work?? der wat does ^ indicate.....is it xor??? plz help me out

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module hamm_enc(outp,inp,reset);
parameter n=11,k=7;
output [n-1:0] outp;
input [k-1:0] inp;
input reset;
reg [n-1:0] outp;
integer i,j;
always @(inp or reset)
begin
if(reset)
outp = 0;
else
begin
i=0; j=0;
while((i<n) || (j<k))
begin
while(i==0 || i==1 || i==3 || i==7)
begin
outp[i] = 0;
i=i+1;
end
outp[i] = inp[j];
i=i+1;
j=j+1;
end
if(^(outp & 11'b101_0101_0101))
outp[0] = ~outp[0];
if(^(outp & 11'b110_0110_0110))
outp[1] = ~outp[1];
if(^(outp & 11'b000_0111_1000))
outp[3] = ~outp[3];
if(^(outp & 11'b111_1000_0000))
outp[7] = ~outp[7];
end
end
endmodule

Chapter 8
 
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