drand48 POSIX.1 random number generator
drand48 is the random mumber generator included in POSIX / ANSI-C standard employed by drand48() function family.
It is LCG with mod = 2^48, a = 25214903917, c = 11
Functions
POSIX compatible '48 functions:
- drand
- mrand
- lrand
- srand
Extracting functions
- get_bytes
- get_bytes3
- fill_bytes
Seed functions
- verify_seed
- clamp_seed
Spectral test
| 2d | 3d | 4d | 5d | 6d | 7d | 8d |
|---|---|---|---|---|---|---|
| 0.51 | 0.80 | 0.45 | 0.58 | 0.66 | 0.80 | 0.60 |
Compatibility
This version of drand48 matches outputs of drand() family in FreeBSD 13 libc.
No copyright
This is free and unencumbered software released into the public domain.
You may use, modify, distribute, and contribute to this code without restriction. To the extent possible under law, the author(s) of this work waive all copyright and related rights.
Licensed under CC0-1.0 OR Unlicense.
