[{"id":1776512,"web_url":"http://patchwork.ozlabs.org/comment/1776512/","msgid":"","list_archive_url":null,"date":"2017-09-27T18:03:06","subject":"Re: [PATCH 3/7 v2] New generic log2f","submitter":{"id":4349,"url":"http://patchwork.ozlabs.org/api/people/4349/","name":"Joseph Myers","email":"joseph@codesourcery.com"},"content":"In the logf patch, you define LOGF_POLY_ORDER to 4, but actually only have \n3 terms in the polynomial. In the log2f patch, you define \nLOG2F_POLY_ORDER to 4, and actually have and use 4 terms. Why should \nlog2f need a larger polynomial than logf?","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":["patchwork-incoming@bilbo.ozlabs.org","mailing list libc-alpha@sourceware.org"],"Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=sourceware.org\n\t(client-ip=209.132.180.131; helo=sourceware.org;\n\tenvelope-from=libc-alpha-return-85034-incoming=patchwork.ozlabs.org@sourceware.org;\n\treceiver=)","ozlabs.org; dkim=pass (1024-bit key;\n\tsecure) header.d=sourceware.org header.i=@sourceware.org\n\theader.b=\"CshSpEj0\"; dkim-atps=neutral","sourceware.org; auth=none"],"Received":["from sourceware.org (server1.sourceware.org [209.132.180.131])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3y2Qfh4Dylz9sPt\n\tfor ;\n\tThu, 28 Sep 2017 04:03:24 +1000 (AEST)","(qmail 33269 invoked by alias); 27 Sep 2017 18:03:16 -0000","(qmail 32706 invoked by uid 89); 27 Sep 2017 18:03:16 -0000"],"DomainKey-Signature":"a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:date:from:to:cc:subject:in-reply-to:message-id\n\t:references:mime-version:content-type; q=dns; s=default; b=MVdgI\n\tLGJugewRMUE3gACo9oAadKKYOTTOKhRoQRYDITtJnMyC4D2toQvR0iyBK4S7ekfo\n\teuIkrzyAUzfFx2omSbRoo6W84V7p0vKELdlWBMz9JvNIzthfcLlBV4KSJfPvUOtg\n\tN5SqfZ0GH/UWqogembSoCofJt69kviNThzzHnM=","DKIM-Signature":"v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:date:from:to:cc:subject:in-reply-to:message-id\n\t:references:mime-version:content-type; s=default; bh=6PYB/i1MXfP\n\t1zNdvRaugL4gN7K0=; b=CshSpEj02+dV72d0Kw8NI69DOP3A7VM1+D8XTcNcJX3\n\tm/of7VSqmNQ4qdPolAoNU+i8wJnxEjV8jcVHEmcUe9E+EaCcpQWtzsgUObIgPJ9g\n\tQ40nmFZ0zKgmFyI//ZnfbX18CHvA3vTgDOJVFsBa4MymWaaceeuIM/xnNwP5RrjM\n\t=","Mailing-List":"contact libc-alpha-help@sourceware.org; run by ezmlm","Precedence":"bulk","List-Id":"","List-Unsubscribe":"","List-Subscribe":"","List-Archive":"","List-Post":"","List-Help":",\n\t","Sender":"libc-alpha-owner@sourceware.org","X-Virus-Found":"No","X-Spam-SWARE-Status":"No, score=-2.0 required=5.0 tests=AWL, BAYES_00,\n\tRCVD_IN_DNSWL_NONE, SPF_PASS,\n\tURIBL_RED autolearn=ham version=3.3.2 spammy=Hx-languages-length:326","X-HELO":"relay1.mentorg.com","Date":"Wed, 27 Sep 2017 18:03:06 +0000","From":"Joseph Myers ","To":"Szabolcs Nagy ","CC":"GNU C Library , ","Subject":"Re: [PATCH 3/7 v2] New generic log2f","In-Reply-To":"<59C8E292.6030505@arm.com>","Message-ID":"","References":"<59C8E136.6070606@arm.com> <59C8E292.6030505@arm.com>","User-Agent":"Alpine 2.20 (DEB 67 2015-01-07)","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"US-ASCII\"","X-ClientProxiedBy":"svr-ies-mbx-01.mgc.mentorg.com (139.181.222.1) To\n\tsvr-ies-mbx-01.mgc.mentorg.com (139.181.222.1)"}},{"id":1776899,"web_url":"http://patchwork.ozlabs.org/comment/1776899/","msgid":"<59CCBCAA.1050205@arm.com>","list_archive_url":null,"date":"2017-09-28T09:11:06","subject":"Re: [PATCH 3/7 v2] New generic log2f","submitter":{"id":65667,"url":"http://patchwork.ozlabs.org/api/people/65667/","name":"Szabolcs Nagy","email":"szabolcs.nagy@arm.com"},"content":"On 27/09/17 19:03, Joseph Myers wrote:\n> In the logf patch, you define LOGF_POLY_ORDER to 4, but actually only have \n> 3 terms in the polynomial. In the log2f patch, you define \n> LOG2F_POLY_ORDER to 4, and actually have and use 4 terms. Why should \n> log2f need a larger polynomial than logf?\n> \n\nthe order is meant to be the order of the polynomial\nwhich is 4.\n\nbut in case of logf the first order coeff is fixed to\n1.0 so we don't have to multiply with that.\n\ni guess i should use\n\n double poly[LOGF_POLY_ORDER - 1]; /* First order coefficient is 1. */\n\nin the __logf_data declaration.\n\n(these macros had more relevance when i had several\nimplementations of the functions with different table\nsize and poly order.)","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":["patchwork-incoming@bilbo.ozlabs.org","mailing list libc-alpha@sourceware.org"],"Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=sourceware.org\n\t(client-ip=209.132.180.131; helo=sourceware.org;\n\tenvelope-from=libc-alpha-return-85059-incoming=patchwork.ozlabs.org@sourceware.org;\n\treceiver=)","ozlabs.org; dkim=pass (1024-bit key;\n\tsecure) header.d=sourceware.org header.i=@sourceware.org\n\theader.b=\"Scvwwpmb\"; 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Linux x86_64;\n\trv:31.0) Gecko/20100101 Thunderbird/31.8.0","MIME-Version":"1.0","To":"Joseph Myers ","CC":"nd@arm.com, GNU C Library ","Subject":"Re: [PATCH 3/7 v2] New generic log2f","References":"<59C8E136.6070606@arm.com> <59C8E292.6030505@arm.com>\n\t","In-Reply-To":"","Content-Type":"text/plain; charset=windows-1252","Content-Transfer-Encoding":"7bit","X-ClientProxiedBy":"DB6PR07CA0076.eurprd07.prod.outlook.com\n\t(2603:10a6:6:2b::14) To AM5PR0802MB2482.eurprd08.prod.outlook.com\n\t(2603:10a6:203:98::23)","X-MS-PublicTrafficType":"Email","X-MS-Office365-Filtering-Correlation-Id":"711f1969-ba79-49d6-57ce-08d50650dbb8","X-MS-Office365-Filtering-HT":"Tenant","X-Microsoft-Antispam":"UriScan:; BCL:0; PCL:0;\n\tRULEID:(22001)(2017030254152)(48565401081)(2017052603199)(201703131423075)(201703031133081)(201702281549075);\n\tSRVR:AM5PR0802MB2482; ","X-Microsoft-Exchange-Diagnostics":["1; AM5PR0802MB2482;\n\t3:BYOSkQ6Gijql6YtSUM0VRVxPFFKb+/goJsYZ3BWFNIGf8z8zg74zbJXTo3Hq7BiQYVbNIiLuusnlYkFXGfbZA6K1nvr0i3AN82VwYgXoRnPrLKf0bjIKRpAW8tL+UPGG3MuN8NBt/LqlNd8pDvK8sqzzX40uz6JgSRttPE/LBSZYkwh+FzUjhFxfUgF4f6euLxqZuXASd54Swx0v3iNZ1i/LYfwH228dF7R7sYt5VRa88LOmdh4pxeakG8W/up03;\n\t25:uo54sizKzqW1IU4oumjuVQz7zysmZY6kLmzwywpBiPasQ/osRKeY9/Kcd6vrvLzs0ihbsm0Zih4saCI3J8gZTPg1BC7bAR1NFyPeNhFb2KqTOlLdWkannUuyiFzOel0dAZeOGMyMiKWDf2JWMpMZptdBfNIWqyefFl4BmU4LRpooOuS0ii+j90gx+1iWnfMrIztUVseaqd5QWSHVUyp4nRiOM6aZGRzjsTb189KVFpj6/5Oi+kjB3pLP5DvyR1r02TMbiSO+EYklIuWVskI8NKS4tgzvdKkPdEp0Jo575TW375RVMPPCmuzihLriD1U0+Iv2VZUtezoynsjOwfEH/A==;\n\t31:d8+AaBp/F6bmqUKvqv+07C5tgE23NA2DdZr6od8OmwzbwaMl1RETPZSSyjKQZ/SVeZaj1C1Dy7jD945kk2BNN7Zy6tV3iFoKlk4VHOS39Lq7IqC4wlwoUueUyeupczYJTwYKH3osh35dWGPzs9ohmKUstHJx/34J/40VXAerQGoGsDWMzwym2GBmj1AYWYuNau4qmShWl/58WjZe8Ws3PDXLITYlcAlaAFNDSzLDOkA=","1; 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SFP:1101; SCL:1; SRVR:AM5PR0802MB2482;\n\tH:[10.2.206.69]; FPR:; SPF:None; PTR:InfoNoRecords; MX:1; A:1;\n\tLANG:en; ","Received-SPF":"None (protection.outlook.com: arm.com does not designate\n\tpermitted sender hosts)","SpamDiagnosticOutput":"1:99","SpamDiagnosticMetadata":"NSPM","X-OriginatorOrg":"arm.com","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"28 Sep 2017 09:11:08.9672\n\t(UTC)","X-MS-Exchange-CrossTenant-FromEntityHeader":"Hosted","X-MS-Exchange-CrossTenant-Id":"f34e5979-57d9-4aaa-ad4d-b122a662184d","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"AM5PR0802MB2482"}},{"id":1777017,"web_url":"http://patchwork.ozlabs.org/comment/1777017/","msgid":"","list_archive_url":null,"date":"2017-09-28T13:04:34","subject":"Re: [PATCH 3/7 v2] New generic log2f","submitter":{"id":4349,"url":"http://patchwork.ozlabs.org/api/people/4349/","name":"Joseph Myers","email":"joseph@codesourcery.com"},"content":"On Thu, 28 Sep 2017, Szabolcs Nagy wrote:\n\n> i guess i should use\n> \n> double poly[LOGF_POLY_ORDER - 1]; /* First order coefficient is 1. */\n> \n> in the __logf_data declaration.\n\nYes. Please include that in the commit of the logf patch (and update / \nrepost the rest of the patch series with fixes for other issues raised \nsuch as missing NEWS updates).","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":["patchwork-incoming@bilbo.ozlabs.org","mailing list libc-alpha@sourceware.org"],"Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=sourceware.org\n\t(client-ip=209.132.180.131; helo=sourceware.org;\n\tenvelope-from=libc-alpha-return-85069-incoming=patchwork.ozlabs.org@sourceware.org;\n\treceiver=)","ozlabs.org; dkim=pass (1024-bit key;\n\tsecure) header.d=sourceware.org header.i=@sourceware.org\n\theader.b=\"RWDj7rKx\"; dkim-atps=neutral","sourceware.org; auth=none"],"Received":["from sourceware.org (server1.sourceware.org [209.132.180.131])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3y2vzq3LQZz9t5Y\n\tfor ;\n\tThu, 28 Sep 2017 23:04:55 +1000 (AEST)","(qmail 125607 invoked by alias); 28 Sep 2017 13:04:49 -0000","(qmail 125597 invoked by uid 89); 28 Sep 2017 13:04:48 -0000"],"DomainKey-Signature":"a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:date:from:to:cc:subject:in-reply-to:message-id\n\t:references:mime-version:content-type; q=dns; s=default; b=XPHP+\n\t9kzxYxR1ZMgm+BUs8VtqLNvQr6KI/UNgjABWHN/1X9xUwuCjI1TmPSq6ssJhr796\n\tRro/lm6U223HstTjbNvg+OWrMP6IEwZ+beQxv+i6sdCOWZgmKPB5xh5o/jEmIDKr\n\tPgNrmq4Ugyh23AS6h6PmE8jIz0hSXbrx/G+KP4=","DKIM-Signature":"v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id\n\t:list-unsubscribe:list-subscribe:list-archive:list-post\n\t:list-help:sender:date:from:to:cc:subject:in-reply-to:message-id\n\t:references:mime-version:content-type; s=default; bh=eS9hz3si2bA\n\tOMM6C00TtK5ArVhQ=; b=RWDj7rKx4iHlpDSVJufTwc98N2z3X4ulj1MK+JZf0c6\n\tqPDHpKJlRMkcTQJGx9bsQiT58brtQMAX/EeBT4AUoPW8hYkqnFUsU+BLL5dwnwFR\n\thYf6eHSgSfwmFFYco9IjW4nD7O3hpf44FPwJdUcajHvdRVg2NLjFamztAnrn94Ic\n\t=","Mailing-List":"contact libc-alpha-help@sourceware.org; run by ezmlm","Precedence":"bulk","List-Id":"","List-Unsubscribe":"","List-Subscribe":"","List-Archive":"","List-Post":"","List-Help":",\n\t","Sender":"libc-alpha-owner@sourceware.org","X-Virus-Found":"No","X-Spam-SWARE-Status":"No, score=-2.0 required=5.0 tests=AWL, BAYES_00,\n\tRCVD_IN_DNSWL_NONE, SPF_PASS,\n\tURIBL_RED autolearn=ham version=3.3.2 spammy=","X-HELO":"relay1.mentorg.com","Date":"Thu, 28 Sep 2017 13:04:34 +0000","From":"Joseph Myers ","To":"Szabolcs Nagy ","CC":", GNU C Library ","Subject":"Re: [PATCH 3/7 v2] New generic log2f","In-Reply-To":"<59CCBCAA.1050205@arm.com>","Message-ID":"","References":"<59C8E136.6070606@arm.com> <59C8E292.6030505@arm.com>\n\t\n\t<59CCBCAA.1050205@arm.com>","User-Agent":"Alpine 2.20 (DEB 67 2015-01-07)","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"US-ASCII\"","X-ClientProxiedBy":"svr-ies-mbx-01.mgc.mentorg.com (139.181.222.1) To\n\tsvr-ies-mbx-01.mgc.mentorg.com (139.181.222.1)"}}]