Spf

math_comb

Struct Spf 

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pub struct Spf { /* private fields */ }

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impl Spf

A struct representing the smallest prime factor (SPF) computation.

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pub fn new(max_limit: usize) -> Spf

Creates a new Spf instance with a given maximum limit.

§Arguments
  • max_limit - The maximum limit up to which the smallest prime factors are computed.
§Returns

A new Spf instance with precomputed smallest prime factors up to max_limit.

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pub fn get_spf(&self, x: u64) -> u64

Retrieves the smallest prime factor of a given number.

§Arguments
  • x - The number for which the smallest prime factor is to be retrieved.
§Returns

The smallest prime factor of x.

§Panics

Panics if x is greater than the max_limit specified during the creation of the Spf instance.

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pub fn factorize(&self, x: u64) -> Vec<u64>

Factorizes a given number into its prime factors.

§Arguments
  • x - The number to be factorized.
§Returns

A vector containing the prime factors of x.

§Panics

Panics if x is greater than the max_limit specified during the creation of the Spf instance.

§Complexity

The factorization process takes O(log n) time after the SPF computation.

Auto Trait Implementations§

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impl Freeze for Spf

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impl RefUnwindSafe for Spf

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impl Send for Spf

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impl Sync for Spf

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impl Unpin for Spf

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impl UnwindSafe for Spf

Blanket Implementations§

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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<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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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, 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.