rand(3) v7 man page | unix.com

RAND(3) 						     Library Functions Manual							   RAND(3)

NAME
       rand, srand - random number generator

SYNOPSIS
       srand(seed)
       int seed;

       rand( )

DESCRIPTION
       Rand  uses  a  multiplicative  congruential random number generator with period 232 to return successive pseudo-random numbers in the range
       from 0 to 215-1.

       The generator is reinitialized by calling srand with 1 as argument.  It can be set to a random starting point by calling srand  with  what-
       ever you like as argument.

																	   RAND(3)