9 lines
321 B
Plaintext
9 lines
321 B
Plaintext
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import "./lookup2bit" as lookup;
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// Three-bit window lookup (2bits + signature bit) in 2bit table
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// using two constraints. Maps the bits `b` to a list of constants `c`
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def main(bool[3] b, field[4] c) -> field {
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field alpha = lookup([b[0], b[1]], c);
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field out = alpha - 2 * (b[2] ? alpha : 0);
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return out;
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}
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