alea

Documentation

Overview

Random numbers generator

Index

• func GaussRand() float64
• func IntRand(min, max int64) int64
• func Random() float64
• func Randomize(seed int64)
• func UintRand(min, max uint64) uint64
• type Generator
  • func New() *Generator
  • func (g *Generator) GaussRand() float64
  • func (g *Generator) IntRand(min, max int64) int64
  • func (g *Generator) Random() float64
  • func (g *Generator) Randomize(seed int64)
  • func (g *Generator) UintRand(min, max uint64) uint64

Functions

func GaussRand

func GaussRand() float64

Same as Generator.GaussRand () with the default generator.

func IntRand

func IntRand(min, max int64) int64

Same as Generator.IntRand () with the default generator.

func Random

func Random() float64

Same as Generator.Random () with the default generator.

func Randomize

func Randomize(seed int64)

Same as Generator.Randomize () with the default generator.

func UintRand

func UintRand(min, max uint64) uint64

Same as Generator.UintRand () with the default generator.

Types

type Generator

type Generator struct {
	// contains filtered or unexported fields
}

func New

func New() *Generator

Initializes the generator with a random seed.

func (*Generator) GaussRand

func (g *Generator) GaussRand() float64

Generates a new pseudo-random real number x with gaussian (normal) deviates. Probability distribution p(x) = 1 / sqrt(2 * pi) * exp(-x^2 / 2). Box-Muller method.

func (*Generator) IntRand

func (g *Generator) IntRand(min, max int64) int64

Generates a new integer number between min (included) and max (excluded)

func (*Generator) Random

func (g *Generator) Random() float64

Generates a new pseudo-random real number x such that (0 <= x < 1), with uniforme deviates. (Period > 2 × 10^18). Ref.: Generator ran2, W. H. Press, S. A. Teukolsky, W. T. Vetterling, B. P. Flannery, Numerical Recipes, The Art of Scientific Computing, second edition, 1997.

func (*Generator) Randomize

func (g *Generator) Randomize(seed int64)

Initializes the pseudo-random number generator with seed.

func (*Generator) UintRand

func (g *Generator) UintRand(min, max uint64) uint64

Generates a new unsigned integer number between min (included) and max (excluded)