Defines for Rand. More...
#include <stdint.h>
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Functions | |
| void | elektraRand (int32_t *seed) |
| Non cryptographic pseudo random number generator By Ray Gardner www8.cs.umu.se/~isak/snippets/rg_rand.c. More... | |
Detailed Description
Defines for Rand.
- Copyright
- BSD License (see doc/COPYING or https://www.libelektra.org)
Function Documentation
◆ elektraRand()
| 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
