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detect special parity word using offset and shift

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This commit is contained in:
Ahmet Inan 2019-11-05 09:59:55 +01:00
commit 1eef4c3df5
1 changed files with 4 additions and 5 deletions
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9
ldpc_decoder.hh
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@ -95,10 +95,9 @@ class LDPCDecoder
for (int k = 0; k < deg; ++k) {
int offset = lo[k].off;
int shift = lo[k].shi;
shift -= csh[offset];
shift %= D;
TYPE tmp = rotate(var[offset], shift);
if (i == 0 && offset == VAR-1) {
int dshift = (shift - csh[offset]) % D;
TYPE tmp = rotate(var[offset], dshift);
if (offset == VAR-1 && shift == 1) {
prev_val = tmp.v[0];
tmp.v[0] = 127;
}
@ -141,7 +140,7 @@ class LDPCDecoder
int offset = lo[k].off;
int shift = lo[k].shi;
if (i == 0 && offset == VAR-1)
if (offset == VAR-1 && shift == 1)
tmp.v[0] = prev_val;
if (!write_conflict || !((*wd>>k)&1)) {