From owner-svn-src-stable-10@FreeBSD.ORG Sun Apr 12 21:35:14 2015 Return-Path: <owner-svn-src-stable-10@FreeBSD.ORG> Delivered-To: svn-src-stable-10@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 450D5E7F; Sun, 12 Apr 2015 21:35:14 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 2FB09B82; Sun, 12 Apr 2015 21:35:14 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id t3CLZEAV028662; Sun, 12 Apr 2015 21:35:14 GMT (envelope-from markj@FreeBSD.org) Received: (from markj@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id t3CLZDD3028661; Sun, 12 Apr 2015 21:35:13 GMT (envelope-from markj@FreeBSD.org) Message-Id: <201504122135.t3CLZDD3028661@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: markj set sender to markj@FreeBSD.org using -f From: Mark Johnston <markj@FreeBSD.org> Date: Sun, 12 Apr 2015 21:35:13 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r281472 - stable/10/cddl/contrib/opensolaris/lib/libdtrace/common X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-10@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: SVN commit messages for only the 10-stable src tree <svn-src-stable-10.freebsd.org> List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-stable-10>, <mailto:svn-src-stable-10-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/svn-src-stable-10/> List-Post: <mailto:svn-src-stable-10@freebsd.org> List-Help: <mailto:svn-src-stable-10-request@freebsd.org?subject=help> List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-stable-10>, <mailto:svn-src-stable-10-request@freebsd.org?subject=subscribe> X-List-Received-Date: Sun, 12 Apr 2015 21:35:14 -0000 Author: markj Date: Sun Apr 12 21:35:13 2015 New Revision: 281472 URL: https://svnweb.freebsd.org/changeset/base/281472 Log: MFC r278114: libdtrace: Let the standard deviation of the empty set be 0. PR: 197260 Modified: stable/10/cddl/contrib/opensolaris/lib/libdtrace/common/dt_consume.c Directory Properties: stable/10/ (props changed) Modified: stable/10/cddl/contrib/opensolaris/lib/libdtrace/common/dt_consume.c ============================================================================== --- stable/10/cddl/contrib/opensolaris/lib/libdtrace/common/dt_consume.c Sun Apr 12 21:28:54 2015 (r281471) +++ stable/10/cddl/contrib/opensolaris/lib/libdtrace/common/dt_consume.c Sun Apr 12 21:35:13 2015 (r281472) @@ -382,6 +382,9 @@ dt_stddev(uint64_t *data, uint64_t norma int64_t norm_avg; uint64_t diff[2]; + if (data[0] == 0) + return (0); + /* * The standard approximation for standard deviation is * sqrt(average(x**2) - average(x)**2), i.e. the square root