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Avoid panic on division by zero in mul_by_inverse_unchecked #184

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Avoid panic on division by zero in mul_by_inverse_unchecked #184

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Description

  • What: Replace expect("division by zero") with Err(SynthesisError::Unsatisfiable) when cs == ConstraintSystemRef::None in mul_by_inverse_unchecked.
  • Why: Prevents unexpected panics in library code and aligns behavior with the witness branch (which doesn’t panic).
  • Behavior change: Constant division by zero now returns an error instead of panicking.

@anim001k anim001k requested a review from a team as a code owner August 10, 2025 17:34
@anim001k anim001k requested review from z-tech, Pratyush and weikengchen and removed request for a team August 10, 2025 17:34
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@z-tech z-tech Awaiting requested review from z-tech z-tech is a code owner automatically assigned from arkworks-rs/maintainers

@Pratyush Pratyush Awaiting requested review from Pratyush Pratyush is a code owner automatically assigned from arkworks-rs/maintainers

@weikengchen weikengchen Awaiting requested review from weikengchen weikengchen is a code owner automatically assigned from arkworks-rs/maintainers

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