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band-aid quick fix for https://github.com/0xPolygonZero/plonky2/issues/1641

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Balazs Komuves 2024-12-06 14:12:42 +01:00
parent 2916b99f11
commit be9ea35a15
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1 changed files with 8 additions and 2 deletions
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10
plonky2/src/gates/lookup.rs
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@ -201,8 +201,14 @@ impl<F: RichField + Extendable<D>, const D: usize> SimpleGenerator<F, D> for Loo
let get_wire = |wire: usize| -> F { witness.get_target(Target::wire(self.row, wire)) };
let input_val = get_wire(LookupGate::wire_ith_looking_inp(self.slot_nb));
let (input, output) = self.lut[input_val.to_canonical_u64() as usize];
if input_val == F::from_canonical_u16(input) {
let idx_candidate: usize = input_val.to_canonical_u64() as usize;
let ((input, output), ok) = if idx_candidate < self.lut.len() {
(self.lut[idx_candidate], true)
}
else {
((0,0), false)
};
if ok && (input_val == F::from_canonical_u16(input)) {
let output_val = F::from_canonical_u16(output);
let out_wire = Target::wire(self.row, LookupGate::wire_ith_looking_out(self.slot_nb));