.\" Copyright (c) 1990, 1991 The Regents of the University of California. .\" All rights reserved. .\" .\" This code is derived from software contributed to Berkeley by .\" the American National Standards Committee X3, on Information .\" Processing Systems. .\" .\" %sccs.include.redist.man% .\" .\" @(#)rand.3 6.7 (Berkeley) 06/29/91 .\" .Dd .Dt RAND 3 .Os .Sh NAME .Nm rand , .Nm srand .Nd bad random number generator .Sh SYNOPSIS .Fd #include .Ft void .Fn srand "unsigned seed" .Ft int .Fn rand void .Sh DESCRIPTION .Bf -symbolic These interfaces are obsoleted by random(3). .Ef .Pp The .Fn rand function computes a sequence of pseudo-random integers in the range of 0 to .Dv RAND_MAX (as defined by the header file .Aq Pa stdlib.h ) . .Pp The .Fn srand function sets its argument as the seed for a new sequence of pseudo-random numbers to be returned by .Fn rand . These sequences are repeatable by calling .Fn srand with the same seed value. .Pp If no seed value is provided, the functions are automatically seeded with a value of 1. .Sh SEE ALSO .Xr random 3 .Sh STANDARDS The .Fn rand and .Fn srand functions conform to .St -ansiC .