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cellaigs: fix function argument evaluation order #5526

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cellaigs: fix function argument evaluation order #5526

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26f2c11
cellaigs: fix function argument evaluation order
widlarizer Dec 1, 2025
db2f3cf
cellaigs: fix adder function argument evaluation order
widlarizer Dec 2, 2025
94a68f9
cellaigs: formatting
widlarizer Dec 2, 2025
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27 changes: 20 additions & 7 deletions kernel/cellaigs.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -185,37 +185,50 @@ struct AigMaker

int or_gate(int A, int B)
{
return nand_gate(not_gate(A), not_gate(B));
int not_a = not_gate(A);
int not_b = not_gate(B);
return nand_gate(not_a, not_b);
}

int nor_gate(int A, int B)
{
return and_gate(not_gate(A), not_gate(B));
int not_a = not_gate(A);
int not_b = not_gate(B);
return and_gate(not_a, not_b);
}

int xor_gate(int A, int B)
{
return nor_gate(and_gate(A, B), nor_gate(A, B));
int a_and_b = and_gate(A, B);
int a_nor_b = nor_gate(A, B);
return nor_gate(a_and_b, a_nor_b);
}

int xnor_gate(int A, int B)
{
return or_gate(and_gate(A, B), nor_gate(A, B));
int a_and_b = and_gate(A, B);
int a_nor_b = nor_gate(A, B);
return or_gate(a_and_b, a_nor_b);
}

int andnot_gate(int A, int B)
{
return and_gate(A, not_gate(B));
int not_b = not_gate(B);
return and_gate(A, not_b);
}

int ornot_gate(int A, int B)
{
return or_gate(A, not_gate(B));
int not_b = not_gate(B);
return or_gate(A, not_b);
}

int mux_gate(int A, int B, int S)
{
return or_gate(and_gate(A, not_gate(S)), and_gate(B, S));
int not_s = not_gate(S);
int a_active = and_gate(A, not_s);
int b_active = and_gate(B, S);
return or_gate(a_active, b_active);
}

vector<int> adder(const vector<int> &A, const vector<int> &B, int carry, vector<int> *X = nullptr, vector<int> *CO = nullptr)
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