ultrix man page for rand

rand(3) 						     Library Functions Manual							   rand(3)

Name
       rand, srand - random number generator

Syntax
       #include <stdlib.h>

       void srand(seed)
       unsigned seed;

       rand()

Description
       The newer should be used in new applications.  The subroutine remains for compatibility.

       The subroutine uses a multiplicative congruential random number generator with period 232 to return successive pseudo-random numbers in the
       range from 0 to 231-1.

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

Environment
       For the System V environment, the subroutine returns numbers in the range from 0 to 215-1.

See Also
       random(3)

																	   rand(3)