Manual page for RAND(3V)
rand, srand - simple random number generator
SYNOPSIS
srand(seed)
int seed;
rand()
DESCRIPTION
rand()
uses a multiplicative congruential random number generator
with period
22
to return successive pseudo-random
numbers in the range from 0 to
21-1.
srand()
can be called at any time to reset the random-number generator
to a random starting point.
The generator is initially seeded with a value of 1.
SYSTEM V DESCRIPTION
rand()
returns successive pseudo-random
numbers in the range from 0 to
25-1.
SEE ALSO
drand48.3
random.3
NOTES
The spectral properties of
rand()
leave a great deal to be desired.
drand48.3
and
random.3
provide much better, though more elaborate, random-number generators.
BUGS
The low bits of the numbers generated are not very random;
use the middle bits.
In particular the lowest bit alternates between 0 and 1.
Created by unroff & hp-tools.
© somebody (See intro for details). All Rights Reserved.
Last modified 11/5/97
