folly::splitmix64_engine

Synopsis

Declared in <folly/random/splitmix64.h>

class splitmix64_engine;

Description

A standard-conforming RandomNumberEngine wrapping the SplitMix64 mixing step. Its 64-bit internal state advances by a fixed increment per draw, so discard() is O(1) and the full state is recoverable via operator>>.

Type Aliases

Name	Description
`result_type`	The unsigned integer type produced by the engine.

Member Functions

Name	Description
`splitmix64_engine` [constructor]	Constructors
`discard`	discard
`operator()`	Generates the next random value.
`seed`	seed

Static Member Functions

Name	Description
`max`	Returns the largest value the engine can produce.
`min`	Returns the smallest value the engine can produce.

Static Data Members

Name	Description
`default_seed`	Default seed value used when none is provided.

Friends

Name	Description
`folly::operator>>`	Reads the engine state from an input stream.
`folly::operator<<`	Writes the engine state to an output stream.
`folly::operator==`	Compares two engines for equality of state.