Struct rand::XorShiftRng
[−]
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pub struct XorShiftRng { /* fields omitted */ }
An Xorshift[1] random number generator.
The Xorshift algorithm is not suitable for cryptographic purposes
but is very fast. If you do not know for sure that it fits your
requirements, use a more secure one such as IsaacRng
or OsRng
.
[1]: Marsaglia, George (July 2003). "Xorshift RNGs". Journal of Statistical Software. Vol. 8 (Issue 14).
Methods
impl XorShiftRng
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fn new_unseeded() -> XorShiftRng
Creates a new XorShiftRng instance which is not seeded.
The initial values of this RNG are constants, so all generators created
by this function will yield the same stream of random numbers. It is
highly recommended that this is created through SeedableRng
instead of
this function
Trait Implementations
impl Clone for XorShiftRng
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fn clone(&self) -> XorShiftRng
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0
Performs copy-assignment from source
. Read more
impl Rng for XorShiftRng
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fn next_u32(&mut self) -> u32
Return the next random u32. Read more
fn next_u64(&mut self) -> u64
Return the next random u64. Read more
fn next_f32(&mut self) -> f32
Return the next random f32 selected from the half-open interval [0, 1)
. Read more
fn next_f64(&mut self) -> f64
Return the next random f64 selected from the half-open interval [0, 1)
. Read more
fn fill_bytes(&mut self, dest: &mut [u8])
Fill dest
with random data. Read more
fn gen<T: Rand>(&mut self) -> T where Self: Sized
Return a random value of a Rand
type. Read more
fn gen_iter<'a, T: Rand>(&'a mut self) -> Generator<'a, T, Self> where Self: Sized
Return an iterator that will yield an infinite number of randomly generated items. Read more
fn gen_range<T: PartialOrd + SampleRange>(&mut self, low: T, high: T) -> T where Self: Sized
Generate a random value in the range [low
, high
). Read more
fn gen_weighted_bool(&mut self, n: u32) -> bool where Self: Sized
Return a bool with a 1 in n chance of true Read more
fn gen_ascii_chars<'a>(&'a mut self) -> AsciiGenerator<'a, Self> where Self: Sized
Return an iterator of random characters from the set A-Z,a-z,0-9. Read more
fn choose<'a, T>(&mut self, values: &'a [T]) -> Option<&'a T> where Self: Sized
Return a random element from values
. Read more
fn shuffle<T>(&mut self, values: &mut [T]) where Self: Sized
Shuffle a mutable slice in place. Read more
impl SeedableRng<[u32; 4]> for XorShiftRng
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fn reseed(&mut self, seed: [u32; 4])
Reseed an XorShiftRng. This will panic if seed
is entirely 0.
fn from_seed(seed: [u32; 4]) -> XorShiftRng
Create a new XorShiftRng. This will panic if seed
is entirely 0.
impl Rand for XorShiftRng
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fn rand<R: Rng>(rng: &mut R) -> XorShiftRng
Generates a random instance of this type using the specified source of randomness. Read more