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calculate first q entries directly

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This commit is contained in:
Ahmet Inan 2018-12-15 19:42:58 +01:00
commit 6af9798553
1 changed files with 6 additions and 13 deletions
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19
ldpc_decoder.hh
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@ -208,20 +208,13 @@ public:
for (int g = 0; TABLE::LEN[g]; ++g) {
int bit_deg = TABLE::DEG[g];
for (int r = 0; r < TABLE::LEN[g]; ++r) {
int acc_pos[bit_deg];
for (int d = 0; d < bit_deg; ++d)
acc_pos[d] = row_ptr[d];
row_ptr += bit_deg;
for (int j = 0; j < M; ++j) {
for (int d = 0; d < bit_deg; ++d) {
int n = acc_pos[d];
if (n < q)
pos[CNC*n+cnc[n]++] = bit_pos;
}
++bit_pos;
for (int d = 0; d < bit_deg; ++d)
acc_pos[d] = (acc_pos[d] + q) % R;
for (int d = 0; d < bit_deg; ++d) {
int n = row_ptr[d] % q;
int m = row_ptr[d] / q;
pos[CNC*n+cnc[n]++] = bit_pos + (M - m) % M;
}
row_ptr += bit_deg;
bit_pos += M;
}
}
}