{

LDPCInterface *ldpc;

int N, K, R;

bool initialized;

TYPE one()

{

return 1;

}

TYPE sign(TYPE a, TYPE b)

{

return b < TYPE(0) ? -a : b > TYPE(0) ? a : TYPE(0);

}

public:

LDPCEncoder() : initialized(false)

{

}

void init(LDPCInterface *it)

{

if (initialized)

delete ldpc;

initialized = true;

ldpc = it->clone();

N = ldpc->code_len();

K = ldpc->data_len();

R = N - K;

}

void operator()(TYPE *data, TYPE *parity)

{

for (int i = 0; i < R; i)

parity[i] = one();

ldpc->first_bit();

for (int j = 0; j < K; j) {

int *acc_pos = ldpc->acc_pos();

int bit_deg = ldpc->bit_deg();

for (int n = 0; n < bit_deg; n) {

int i = acc_pos[n];

parity[i] = sign(parity[i], data[j]);

}

ldpc->next_bit();

}

for (int i = 1; i < R; i)

parity[i] = sign(parity[i], parity[i-1]);

}

~LDPCEncoder()

{

if (initialized)

delete ldpc;

}