Enum SWFlags 

pub enum SWFlags {
    YIsPositive = 0,
    PointAtInfinity = 64,
    YIsNegative = 128,
}

Flags to be encoded into the serialization. The default flags (empty) should not change the binary representation.

Variants

YIsPositive = 0

Represents a point with positive y-coordinate by setting all bits to 0.

PointAtInfinity = 64

Represents the point at infinity by setting the setting the last-but-one bit to 1.

YIsNegative = 128

Represents a point with negative y-coordinate by setting the MSB to 1.

Implementations

impl SWFlags

pub const fn infinity() -> Self

pub fn from_y_coordinate(y: impl Field) -> Self

pub const fn is_infinity(&self) -> bool

pub const fn is_positive(&self) -> Option<bool>

Trait Implementations

impl Clone for SWFlags

fn clone(&self) -> SWFlags

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SWFlags

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SWFlags

fn default() -> Self

Returns the “default value” for a type.

impl Flags for SWFlags

const BIT_SIZE: usize = 2

The number of bits required to encode Self. This should be at most 8.

fn u8_bitmask(&self) -> u8

Returns a bit mask corresponding to self. For example, if Self contains two variants, there are just two possible bit masks: 0 and 1 << 7.

fn from_u8(value: u8) -> Option<Self>

Tries to read Self from value. Should return None if the Self::BIT_SIZE most-significant bits of value do not correspond to those generated by u8_bitmask.

fn from_u8_remove_flags(value: &mut u8) -> Option<Self>

Convenience method that reads Self from value, just like Self::from_u8, but additionally zeroes out the bits corresponding to the resulting flag in value. If Self::from_u8(*value) would return None, then this method should not modify value.

impl PartialEq for SWFlags

fn eq(&self, other: &SWFlags) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SWFlags

impl Eq for SWFlags

impl StructuralPartialEq for SWFlags