From nobody Sun Aug 7 09:05:37 2022 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4M0thy06d2z4YHDx; Sun, 7 Aug 2022 09:05:38 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4M0thx6gjnz44NC; Sun, 7 Aug 2022 09:05:37 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1659863137; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=2w/+BgvWS8DQI+LREhEPWR4VQMwNpCYCyrra8ck0CAM=; b=O71FYpiMeqieSfdRcIaB0iOK+09VJO9In5ayrwc0T74ro9m/2yV8P10is+kqb6T2y8JmQo p58ur24q+vyShfXJ7hjQfAa/MQWImrKqnUmZ2dD/udYUltfJILCr04Kl12R9mkZ1u4BSs/ zBWgEEBAiQAkgVkRNVXJjs9UDjvoUprw5ME8K7slTHdtUDGN28ZG3C/eAoi1V507EVurmm 6Sabi4YaQMYho22oWIJH2JMQDcUATpinZPEvqTqB0Et3AY3f7v8/vFiK/dR6pdgDWR8FEd CVlTXhk+XpN211FAxOtbGnK/qI9lPP7/HGVpqBF1ajWTySU5JuyNOwYYIBd5zA== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4M0thx5T6dz165T; Sun, 7 Aug 2022 09:05:37 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 27795b0E026971; Sun, 7 Aug 2022 09:05:37 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 27795b86026970; Sun, 7 Aug 2022 09:05:37 GMT (envelope-from git) Date: Sun, 7 Aug 2022 09:05:37 GMT Message-Id: <202208070905.27795b86026970@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Dimitry Andric Subject: git: 9a0d922f57f2 - stable/13 - [libm] Correct comments in s_cbrt[l].c List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: dim X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: 9a0d922f57f2aacee8aee7a190f4dcc1cd5d8bf9 Auto-Submitted: auto-generated ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1659863137; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=2w/+BgvWS8DQI+LREhEPWR4VQMwNpCYCyrra8ck0CAM=; b=v1tzkDgOD8iryO3KOkcLkZc3vUjgpcGPwEUaB1Kt5Su6i70B2MtbYeRszvtWVcJahoWK3m LN+jgScB7FD+CkARFJ9BMCn5PI0KE/k8OOVpl6H/rhsqki8qnyLKlT4lC0opHzfu7fAIrq 77GQC8vKh4F0sacaDGBeuVibkfSkosz0MikPMSiMYy7gqpidD4s+S0IgMM3aGE0gRYkUdc oYmjeX6Tr5k9/KpTbp2jTQNDL3HaPC3AIyVF9hxjhtymuQZlMEXKTcoKXB4UCq6Q/9l+tL D28yPEoyNl70tvCISt0WE7qKaFj7Y3khk37XM/wCRYfhLQSHPzpTiOkX1rsk9A== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1659863137; a=rsa-sha256; cv=none; b=boRZD3NoCedE+l+AJ4Vo548SEZZvlaZXucn4iWrlBPSZRHAzwv8cs6LocthJEFYY33k8Bx kvy60Q52Wb9/hMmHBgjBVnftn768efkRFTZ/RrOdB6OrRE4jOOvQ2DAlw5WEPrvjkoNb4x IZXJQCTT76NbGSl3hJWJwVpSl7chnNNmxPs+yO7mqv1N3fensIMLeNJgHpNUqX3/x0xYeE TBCY+AZPRqi+UsppF3pBGUGOUhFMslfX3CpV9mwULDczjMZLQ3pPrD/dirCIXHXvOjMyTv MR3n31n8rwZIt1BR26LE8XWymflyV4O7XA6Mo288z/wtIVjMuUxmF2R/x83bXA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N The branch stable/13 has been updated by dim: URL: https://cgit.FreeBSD.org/src/commit/?id=9a0d922f57f2aacee8aee7a190f4dcc1cd5d8bf9 commit 9a0d922f57f2aacee8aee7a190f4dcc1cd5d8bf9 Author: Steve Kargl AuthorDate: 2022-08-04 17:31:57 +0000 Commit: Dimitry Andric CommitDate: 2022-08-07 09:02:36 +0000 [libm] Correct comments in s_cbrt[l].c Damian McGuckin noted that the accuracy claims in the code for cbrt(3) and cbrtl(3) were incorrect. Fix the comments to more accurately describe the accuracies. PR: 265603 MFC after: 3 days (cherry picked from commit 369ea0520a3061c07400d7cd32172efb6af39815) --- lib/msun/src/s_cbrt.c | 2 +- lib/msun/src/s_cbrtl.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/msun/src/s_cbrt.c b/lib/msun/src/s_cbrt.c index 0e609e110d9a..4353d340a1ac 100644 --- a/lib/msun/src/s_cbrt.c +++ b/lib/msun/src/s_cbrt.c @@ -108,7 +108,7 @@ cbrt(double x) r=x/s; /* error <= 0.5 ulps; |r| < |t| */ w=t+t; /* t+t is exact */ r=(r-t)/(w+r); /* r-t is exact; w+r ~= 3*t */ - t=t+t*r; /* error <= 0.5 + 0.5/3 + epsilon */ + t=t+t*r; /* error <= (0.5 + 0.5/3) * ulp */ return(t); } diff --git a/lib/msun/src/s_cbrtl.c b/lib/msun/src/s_cbrtl.c index 2236c0fa0348..b15c96ecde03 100644 --- a/lib/msun/src/s_cbrtl.c +++ b/lib/msun/src/s_cbrtl.c @@ -136,7 +136,7 @@ cbrtl(long double x) r=x/s; /* error <= 0.5 ulps; |r| < |t| */ w=t+t; /* t+t is exact */ r=(r-t)/(w+r); /* r-t is exact; w+r ~= 3*t */ - t=t+t*r; /* error <= 0.5 + 0.5/3 + epsilon */ + t=t+t*r; /* error <= (0.5 + 0.5/3) * ulp */ t *= v.e; RETURNI(t);