Return-Path: X-Original-To: apmail-lucene-dev-archive@www.apache.org Delivered-To: apmail-lucene-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 337F36511 for ; Tue, 7 Jun 2011 22:21:23 +0000 (UTC) Received: (qmail 88302 invoked by uid 500); 7 Jun 2011 22:21:21 -0000 Delivered-To: apmail-lucene-dev-archive@lucene.apache.org Received: (qmail 88236 invoked by uid 500); 7 Jun 2011 22:21:21 -0000 Mailing-List: contact dev-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@lucene.apache.org Delivered-To: mailing list dev@lucene.apache.org Received: (qmail 88229 invoked by uid 99); 7 Jun 2011 22:21:21 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 07 Jun 2011 22:21:21 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=5.0 tests=ALL_TRUSTED,T_RP_MATCHES_RCVD X-Spam-Check-By: apache.org Received: from [140.211.11.116] (HELO hel.zones.apache.org) (140.211.11.116) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 07 Jun 2011 22:21:19 +0000 Received: from hel.zones.apache.org (hel.zones.apache.org [140.211.11.116]) by hel.zones.apache.org (Postfix) with ESMTP id C1351106D9C for ; Tue, 7 Jun 2011 22:20:58 +0000 (UTC) Date: Tue, 7 Jun 2011 22:20:58 +0000 (UTC) From: "Uwe Schindler (JIRA)" To: dev@lucene.apache.org Message-ID: <633021777.1578.1307485258788.JavaMail.tomcat@hel.zones.apache.org> In-Reply-To: <1762575835.968.1307470319167.JavaMail.tomcat@hel.zones.apache.org> Subject: [jira] [Commented] (LUCENE-3179) OpenBitSet.prevSetBit() MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 X-Virus-Checked: Checked by ClamAV on apache.org [ https://issues.apache.org/jira/browse/LUCENE-3179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13045669#comment-13045669 ] Uwe Schindler commented on LUCENE-3179: --------------------------------------- You misunderstood me, i know what intrinsics are. My confusion was related to that: bq. and on CPUs without intrinsic instructions the implementation handcrafted by Yonik was actually faster than the one in the standard library And the so called hand crafted method is identical in src.jar and Yonik's code. So without intrinsics, the standard library and Yoniks code should be identical in performance, as it was same code, the last time I looked into it. > OpenBitSet.prevSetBit() > ----------------------- > > Key: LUCENE-3179 > URL: https://issues.apache.org/jira/browse/LUCENE-3179 > Project: Lucene - Java > Issue Type: Improvement > Reporter: Paul Elschot > Priority: Minor > Fix For: 3.3 > > Attachments: LUCENE-3179.patch > > > Find a previous set bit in an OpenBitSet. > Useful for parent testing in nested document query execution LUCENE-2454 . -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org For additional commands, e-mail: dev-help@lucene.apache.org