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Make Field::square take &self and return Self

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This commit is contained in:
Jack Grigg
2019-12-12 23:09:28 +00:00
parent 9dac748224
commit cded08b0c5
24 changed files with 160 additions and 272 deletions
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12
zcash_primitives/src/jubjub/montgomery.rs
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@@ -50,8 +50,7 @@ impl<E: JubjubEngine> Point<E, Unknown> {
pub fn get_for_x(x: E::Fr, sign: bool, params: &E::Params) -> Option<Self> {
// Given an x on the curve, y = sqrt(x^3 + A*x^2 + x)
let mut x2 = x;
x2.square();
let mut x2 = x.square();
let mut rhs = x2;
rhs.mul_assign(params.montgomery_a());
@@ -220,8 +219,7 @@ impl<E: JubjubEngine, Subgroup> Point<E, Subgroup> {
delta.add_assign(&tmp);
}
{
let mut tmp = self.x;
tmp.square();
let mut tmp = self.x.square();
delta.add_assign(&tmp);
tmp = tmp.double();
delta.add_assign(&tmp);
@@ -231,8 +229,7 @@ impl<E: JubjubEngine, Subgroup> Point<E, Subgroup> {
delta.mul_assign(&tmp.inverse().expect("y is nonzero so this must be nonzero"));
}
let mut x3 = delta;
x3.square();
let mut x3 = delta.square();
x3.sub_assign(params.montgomery_a());
x3.sub_assign(&self.x);
x3.sub_assign(&self.x);
@@ -281,8 +278,7 @@ impl<E: JubjubEngine, Subgroup> Point<E, Subgroup> {
);
}
let mut x3 = delta;
x3.square();
let mut x3 = delta.square();
x3.sub_assign(params.montgomery_a());
x3.sub_assign(&self.x);
x3.sub_assign(&other.x);