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Add FieldElement::is_zero()

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Henry de Valence 2017-02-01 00:29:44 -05:00
parent d0bc40783b
commit cb4ff3097c
1 changed files with 9 additions and 0 deletions
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9
src/field.rs
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@ -521,6 +521,15 @@ impl FieldElement {
(bytes[0] & 1) as i32 (bytes[0] & 1) as i32
} }
/// Determine if this `FieldElement` is zero.
///
/// # Return
///
/// If zero, return `1u8`. Otherwise, return `0u8`.
pub fn is_zero(&self) -> u8 {
return 1u8 & (!self.is_nonzero());
}
/// Determine if this `FieldElement` is non-zero. /// Determine if this `FieldElement` is non-zero.
/// ///
/// # Return /// # Return