Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id 290E4200C62 for ; Wed, 12 Apr 2017 02:20:46 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 27C0E160B9E; Wed, 12 Apr 2017 00:20:46 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 70063160B9B for ; Wed, 12 Apr 2017 02:20:45 +0200 (CEST) Received: (qmail 7009 invoked by uid 500); 12 Apr 2017 00:20:44 -0000 Mailing-List: contact issues-help@commons.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: issues@commons.apache.org Delivered-To: mailing list issues@commons.apache.org Received: (qmail 6997 invoked by uid 99); 12 Apr 2017 00:20:44 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd1-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 12 Apr 2017 00:20:44 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd1-us-west.apache.org (ASF Mail Server at spamd1-us-west.apache.org) with ESMTP id 239C3C1F3A for ; Wed, 12 Apr 2017 00:20:44 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd1-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -100.002 X-Spam-Level: X-Spam-Status: No, score=-100.002 tagged_above=-999 required=6.31 tests=[RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-eu.apache.org ([10.40.0.8]) by localhost (spamd1-us-west.apache.org [10.40.0.7]) (amavisd-new, port 10024) with ESMTP id uQ5-4pm9QOyA for ; Wed, 12 Apr 2017 00:20:43 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-eu.apache.org (ASF Mail Server at mx1-lw-eu.apache.org) with ESMTP id 018CF60E04 for ; Wed, 12 Apr 2017 00:20:43 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 547BAE0D4A for ; Wed, 12 Apr 2017 00:20:42 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id A63B32406E for ; Wed, 12 Apr 2017 00:20:41 +0000 (UTC) Date: Wed, 12 Apr 2017 00:20:41 +0000 (UTC) From: "Rob Tompkins (JIRA)" To: issues@commons.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (MATH-1113) "FastMath.atan" is slow MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Wed, 12 Apr 2017 00:20:46 -0000 [ https://issues.apache.org/jira/browse/MATH-1113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Rob Tompkins updated MATH-1113: ------------------------------- Fix Version/s: 4.X > "FastMath.atan" is slow > ----------------------- > > Key: MATH-1113 > URL: https://issues.apache.org/jira/browse/MATH-1113 > Project: Commons Math > Issue Type: Improvement > Affects Versions: 3.2 > Reporter: Gilles > Priority: Minor > Labels: perfomance > Fix For: 4.X > > > This issue is related to > MATH-740 > MATH-901 > Micro-benchmarks show that "FastMath.atan2" is faster than "Math.atan2" but that "FastMath.atan" is slower than "Math.atan". However, both "FastMath.atan2" and "Math.atan" call the internal method "FastMath.atan(double,double,boolean)". > It seems that some performance improvement could be achieved, through understanding why the results seem contradictory. -- This message was sent by Atlassian JIRA (v6.3.15#6346)