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kdbrand.h(3elektra) Elektra kdbrand.h(3elektra)

NAME

kdbrand.h - Defines for Rand.

SYNOPSIS

#include <stdint.h>

Functions


void elektraRand (int32_t *seed)
Non cryptographic pseudo random number generator By Ray Gardner www8.cs.umu.se/~isak/snippets/rg_rand.c.

Detailed Description

Defines for Rand.

Copyright:

BSD License (see doc/COPYING or https://www.libelektra.org)

Function Documentation

void elektraRand (int32_t * seed)

Non cryptographic pseudo random number generator By Ray Gardner www8.cs.umu.se/~isak/snippets/rg_rand.c. based on 'Random Number Generators: Good Ones Are Hard to Find', S.K. Park and K.W. Miller, Communications of the ACM 31:10 (Oct 1988), and 'Two Fast Implementations of the 'Minimal Standard' Random Number Generator', David G. Carta, Comm. ACM 33, 1 (Jan 1990), p. 87-88

linear congruential generator f(z) = 16807 z mod (2 ** 31 - 1)

uses L. Schrage's method to avoid overflow problems

Make sure the initial seed is: 0 < seed < ELEKTRARANDMAX

Parameters:

seed a pointer to the seed

Author

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Mon Jan 15 2018 Version 0.8.20