57 lines
1.1 KiB
Rust
57 lines
1.1 KiB
Rust
use super::Fr;
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use ff::{Field, PrimeField};
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/// A conversion into an element of the field `Fr`.
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pub trait IntoFr: Copy {
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/// Converts `self` to a field element.
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fn into_fr(self) -> Fr;
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}
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impl IntoFr for Fr {
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fn into_fr(self) -> Fr {
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self
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}
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}
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impl IntoFr for u64 {
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fn into_fr(self) -> Fr {
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Fr::from_repr(self.into()).expect("modulus is greater than u64::MAX")
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}
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}
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impl IntoFr for usize {
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fn into_fr(self) -> Fr {
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(self as u64).into_fr()
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}
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}
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impl IntoFr for i32 {
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fn into_fr(self) -> Fr {
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if self >= 0 {
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(self as u64).into_fr()
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} else {
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let mut result = ((-self) as u64).into_fr();
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result.negate();
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result
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}
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}
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}
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impl IntoFr for i64 {
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fn into_fr(self) -> Fr {
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if self >= 0 {
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(self as u64).into_fr()
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} else {
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let mut result = ((-self) as u64).into_fr();
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result.negate();
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result
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}
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}
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}
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impl<'a, T: IntoFr> IntoFr for &'a T {
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fn into_fr(self) -> Fr {
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(*self).into_fr()
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}
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}
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