class Random

Default RNG using the Xoroshiro128plus algorithm. This is a robust RNG with 128 bits of state. Note that low bits have less entropy than higher bits: use sign test to derive random booleans (or randomBool()), and use right shifts (or random()) to derive smaller values (as opposed to modulo). Adapted from http://vigna.di.unimi.it/xorshift/xoroshiro128plus.c

Static Methods

static fun sourcecreate(state: Int): this

static fun sourcemcreate(seed: Int): mutable this

Create an instance using a 64 bit seed. The seed is used to initialize a 64-bit RNG from which two state values are extracted.

static fun sourcecreateWithState(s0: Int, s1: Int): this

static fun sourcemcreateWithState(s0: Int, s1: Int): mutable this

Methods

readonly fun sourceclone(): mutable this

mutable fun sourcenext(): Int

Returns the next raw random number from this generator.

mutable fun sourcerandom(start: Int, end: Int): Int

Returns a random number within the range from start (inclusive) to end (exclusive).

mutable fun sourcerandomBool(): Bool

Returns a random boolean

mutable fun sourcerandomFloat(): Float

Returns a random Float in the range [0, 1)

mutable fun sourceperturb(n: Int): Void

Alter the random number generator in a deterministic way depending on its argument. Used for generating random functions: the generated function will take its argument, perturb the generator, and use that to generate the return value.

readonly fun sourcetoString(): String