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fix(relation): Add error handling for the inverse method to gracefully handle situations where inversion fails. #486

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fix(relation): Add error handling for the inverse method to gracefully handle situations where inversion fails. #486

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5 changes: 2 additions & 3 deletions relation/src/constants.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -36,9 +36,8 @@ pub fn compute_coset_representatives<F: PrimeField>(
// check (a^-1 * b)^`N` = 1
pow_a_N
.inverse()
.expect("Unreachable: all elements in a prime field should have inverse")
* pow_b_N
== F::one()
.map(|inv_a| inv_a * pow_b_N == F::one())
.unwrap_or(false)
}

// check if a new k is valid: i.e. doesn't represent the same coset as any
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