Пример #1
0
func main() {
	g := pnc.NewMersenneTwister(3754129273)

	// Read sequence of 624 integers from a mersenne twister.
	// Try by running examples/mersenne.go then this.
	file, err := os.Open("/tmp/mersenne_outputs.txt")
	if err != nil {
		log.Fatalf("Couldn't read file: %s", err)
	}
	defer file.Close()
	s := bufio.NewScanner(file)

	var urand32s [624]uint32
	i := 0
	for s.Scan() {
		urand64, err := strconv.ParseUint(s.Text(), 16, 0)
		if err != nil {
			log.Fatalf("Error converting line %d to an integer: %s", i, err)
		}
		urand32s[i] = uint32(urand64) // inputs are 32-bit, this loses nothing
		i++
	}
	if i != 624 {
		log.Fatalf("Read %d integers. Need 624 from a mersenne twister.", i)
	}

	// Recover the state of the mersenne twister.
	m := pnc.NewMersenneTwister(0)
	m.SeedFromUrand32s(urand32s)

	// Print the next 624 integers of the mersenne twister.
	for i := 0; i < 624; i++ {
		fmt.Printf("#%d: %d\n", i, g.Urand32())
	}
}
Пример #2
0
func main() {
	// Seed a mersenne twister.
	g := pnc.NewMersenneTwister(3754129273)

	// Print and write 624 integers to a file.
	file, err := os.Create("/tmp/mersenne_outputs.txt")
	if err != nil {
		log.Fatalf("Couldn't create file: %s", err)
	}
	defer file.Close()
	w := bufio.NewWriter(file)

	for i := 0; i < 624; i++ {
		r := g.Urand32()
		fmt.Printf("#%d: %d\n", i, r)
		fmt.Fprintln(w, r)
	}

	w.Flush()
}