Add affine_xy, affine_x, affine_y functions to CurveVar #190
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dongwook1214
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Pratyush,
weikengchen and
z-tech
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Pratyush
reviewed
Oct 1, 2025
src/groups/mod.rs
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| /// A variable that represents a curve point for | ||
| /// the curve `C`. | ||
| pub trait CurveVar<C: CurveGroup, ConstraintF: PrimeField>: | ||
| pub trait CurveVar<C: CurveGroup, ConstraintF: PrimeField, F: FieldVar<C::BaseField, ConstraintF>>: |
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It would be better to add this as an associated type, as it would avoid updating every usage of CurveVar.
Pratyush
reviewed
Oct 2, 2025
src/groups/mod.rs
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| + for<'a> Mul<&'a EmulatedFpVar<C::ScalarField, ConstraintF>, Output = Self> | ||
| + MulAssign<EmulatedFpVar<C::ScalarField, ConstraintF>> | ||
| { | ||
| type F: FieldVar<C::BaseField, ConstraintF>; |
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Can you please rename this to BaseFieldVar?
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Hi @Pratyush , I'm just checking in on this PR as it's been a while since the last update. I'm still very interested in getting this merged. Please let me know if there's anything else you'd like me to address. Thanks! |
Pratyush
approved these changes
Dec 30, 2025
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Description
I've added affine_x, affine_y, and affine_xy methods to the CurveVar trait. To support this, the CurveVar trait was modified to take a generic type F: FieldVar<C::BaseField, ConstraintF>. Consequently, pairing-related Var have been updated.
In the implementation, AffineVar simply returns self.x and self.y. For ProjectiveVar, it first calls to_affine() and then returns the x and y coordinates.
closes: #189
Pendingsection inCHANGELOG.mdFiles changedin the Github PR explorer