www.delorie.com/archives/browse.cgi | search |
Xref: | news2.mv.net comp.os.msdos.djgpp:8023 |
From: | Erik Max Francis <max AT alcyone DOT com> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: random() and rand() question |
Date: | Thu, 29 Aug 1996 07:40:29 -0700 |
Organization: | Alcyone Systems |
Lines: | 17 |
Message-ID: | <3225ABDD.7AF48E03@alcyone.com> |
References: | <DwvF3A DOT H2r AT interactive DOT net> |
NNTP-Posting-Host: | newton.alcyone.com |
Mime-Version: | 1.0 |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
J.J. Pierson wrote: > Silly question... How would I go about getting a random number from say 1 > to a specified number? For a number between 1 and n, use rand()%n + 1. If n is an even power of 2, then bitwise-anding a mask will be faste: rand()&(n - 1) + 1. -- Erik Max Francis, &tSftDotIotE http://www.alcyone.com/max/ max AT alcyone DOT com San Jose, California ICBM 37 20 07 N 121 53 38 W R^4: the 4th R is respect "Out from his breast/his soul went to seek/the doom of the just." -- _Beowulf_
webmaster | delorie software privacy |
Copyright © 2019 by DJ Delorie | Updated Jul 2019 |