CVS: cvs.openbsd.org: src

[Damien Miller <djm_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org>]

CVSROOT:	/cvs
Module name:	src
Changes by:	djm_(_at_)_cvs_(_dot_)_openbsd_(_dot_)_org	2008/03/02 14:29:07

Modified files:
	share/man/man9 : Makefile random.9 
	sys/dev        : rnd.c rndvar.h 
	sys/netinet    : ip_id.c 

Log message:
Add a arc4random_uniform() that returns a uniformly distributed number
in the range 0 <= x < upper_bound

Please use this new API instead of "arc4random() % upper_bound", as it
avoids the "modulo bias" that favours small results when upper_bound is
not a power of two.

feedback deraadt@ mcbride@; ok deraadt@