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use the non-recursive 1011011 poly

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This commit is contained in:
Ahmet Inan 2025-12-23 08:45:09 +01:00
commit 77c46caa42
2 changed files with 12 additions and 8 deletions
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10
pac_encoder.hh
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@ -20,10 +20,12 @@ class PACEncoder
}
static bool conv(int *state, bool input)
{
bool s1 = *state & 1;
bool s2 = *state & 2;
bool output = input ^ s1 ^ s2;
*state = (s1 << 1) | output;
bool b1 = (*state >> 1) & 1;
bool b3 = (*state >> 3) & 1;
bool b4 = (*state >> 4) & 1;
bool b6 = (*state >> 6) & 1;
bool output = input ^ b1 ^ b3 ^ b4 ^ b6;
*state = ((*state & 126) << 1) | (input ? 2 : 0) | (output ? 1 : 0);
return output;
}
public: