Enum Real

pub enum Real {
    Binary {
        mantissa: f64,
        base: u32,
        exponent: i32,
        enc_base: u8,
    },
    Infinity,
    NegInfinity,
    Zero,
}
Expand description

ASN.1 REAL type

§Limitations

When encoding binary values, only base 2 is supported

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Binary

Non-special values

Fields

§mantissa: f64
§base: u32
§exponent: i32
§enc_base: u8
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Infinity

Infinity (∞).

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NegInfinity

Negative infinity (−∞).

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Zero

Zero

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impl Real

pub fn new(f: f64) -> Real

Create a new REAL from the f64 value.

pub const fn with_enc_base(self, enc_base: u8) -> Real

pub const fn binary(mantissa: f64, base: u32, exponent: i32) -> Real

Create a new binary REAL

pub fn is_infinite(&self) -> bool

Returns true if this value is positive infinity or negative infinity, and false otherwise.

pub fn is_finite(&self) -> bool

Returns true if this number is not infinite.

pub fn f64(&self) -> f64

Returns the ‘f64’ value of this REAL.

Returned value is a float, and may be infinite.

pub fn f32(&self) -> f32

Returns the ‘f32’ value of this REAL.

This functions casts the result of Real::f64 to a f32, and loses precision.

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impl CheckDerConstraints for Real

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impl Debug for Real

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

Formats the value using the given formatter. Read more
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impl From<Real> for f32

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fn from(r: Real) -> f32

Converts to this type from the input type.
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impl From<Real> for f64

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fn from(r: Real) -> f64

Converts to this type from the input type.
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impl From<f32> for Real

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fn from(f: f32) -> Real

Converts to this type from the input type.
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impl From<f64> for Real

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fn from(f: f64) -> Real

Converts to this type from the input type.
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impl PartialEq for Real

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

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

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const TAG: Tag = Tag::RealType

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impl ToDer for Real

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fn to_der_len(&self) -> Result<usize, Error>

Get the length of the object (including the header), when encoded
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fn write_der_header( &self, writer: &mut dyn Write, ) -> Result<usize, SerializeError>

Attempt to write the DER header to this writer.
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fn write_der_content( &self, writer: &mut dyn Write, ) -> Result<usize, SerializeError>

Attempt to write the DER content (all except header) to this writer.
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fn to_der_vec(&self) -> Result<Vec<u8>, SerializeError>

Write the DER encoded representation to a newly allocated Vec<u8>.
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fn to_der_vec_raw(&self) -> Result<Vec<u8>, SerializeError>

Similar to using to_vec, but uses provided values without changes. This can generate an invalid encoding for a DER object.
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fn write_der(&self, writer: &mut dyn Write) -> Result<usize, SerializeError>

Attempt to write the DER encoded representation (header and content) into this writer. Read more
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fn write_der_raw(&self, writer: &mut dyn Write) -> Result<usize, SerializeError>

Similar to using to_der, but uses provided values without changes. This can generate an invalid encoding for a DER object.
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impl<'a, 'b> TryFrom<&'b Any<'a>> for Real

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(any: &'b Any<'a>) -> Result<Real, Error>

Performs the conversion.
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impl<'a> TryFrom<Any<'a>> for Real

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(any: Any<'a>) -> Result<Real, Error>

Performs the conversion.
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impl DerAutoDerive for Real

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impl StructuralPartialEq for Real

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impl Freeze for Real

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impl RefUnwindSafe for Real

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impl Send for Real

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impl Sync for Real

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impl Unpin for Real

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impl UnwindSafe for Real

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<'a, T, E> AsTaggedExplicit<'a, E> for T
where T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

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impl<'a, T, E> AsTaggedImplicit<'a, E> for T
where T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32, ) -> TaggedParser<'a, Implicit, Self, E>

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Choice for T
where T: Tagged,

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fn can_decode(tag: Tag) -> bool

Is the provided Tag decodable as a variant of this CHOICE?
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impl<T> DynTagged for T
where T: Tagged,

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fn tag(&self) -> Tag

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<'a, T, E> FromBer<'a, E> for T
where T: TryFrom<Any<'a>, Error = E>, E: From<Error>,

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fn from_ber(bytes: &'a [u8]) -> Result<(&'a [u8], T), Err<E>>

Attempt to parse input bytes into a BER object
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impl<'a, T, E> FromDer<'a, E> for T
where T: TryFrom<Any<'a>, Error = E> + CheckDerConstraints + DerAutoDerive, E: From<Error> + Display + Debug,

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fn from_der(bytes: &'a [u8]) -> Result<(&'a [u8], T), Err<E>>

Attempt to parse input bytes into a DER object (enforcing constraints)
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impl<T> FutureExt for T

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fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T, U> RamaInto<U> for T
where U: RamaFrom<T>,

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fn rama_into(self) -> U

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impl<T, U> RamaInto<U> for T
where U: RamaFrom<T>,

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fn rama_into(self) -> U

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impl<T, U> RamaTryInto<U> for T
where U: RamaTryFrom<T>,

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type Error = <U as RamaTryFrom<T>>::Error

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fn rama_try_into(self) -> Result<U, <U as RamaTryFrom<T>>::Error>

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impl<T, U> RamaTryInto<U> for T
where U: RamaTryFrom<T>,

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type Error = <U as RamaTryFrom<T>>::Error

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fn rama_try_into(self) -> Result<U, <U as RamaTryFrom<T>>::Error>

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> ErasedDestructor for T
where T: 'static,