From nobody Thu Aug 04 17:34:34 2022 X-Original-To: dev-commits-src-main@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 4LzG7Z721Rz4YPnr; Thu, 4 Aug 2022 17:34:34 +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 4LzG7Z6J2Xz3ZwK; Thu, 4 Aug 2022 17:34:34 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1659634474; 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=QxPcNolDZvmo4iuCTYCt6Eg3krTsND/em68qr++Ixa8=; b=Y14vpYzQLNmTJRNy04x3YBFsAGjVS942hmDzCyk+VWCXTbBwaYMuOtYFdBLqXNO1cNDxJk 42J/bK1YAPRG/QwS6CfWIHaK6fYb9D+ldQhGiDa13V3MtdbLcoRRSPdIZ/1eqKGWZN5jC/ MYJjxtItNRrW21cWvwK3AHCV2RR76mQpfj/YluRkVnsox6FL/EXr9a1qiSrsG2JCOGOOmT L9KvmeKzmt6XazzCKPiwpXn2VUhSrjuaYBiomlaI/tpZiEiOHtMQLbc4b37HlZS6tnYA5e BWoXPNgDjZwYKBZhRy00xJ3G18t+ycOXC3Zp23iGj4kaW+aPxbD6dymBfqZ6UQ== 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 4LzG7Z5JNFzNkG; Thu, 4 Aug 2022 17:34:34 +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 274HYYnB054913; Thu, 4 Aug 2022 17:34:34 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 274HYYcP054912; Thu, 4 Aug 2022 17:34:34 GMT (envelope-from git) Date: Thu, 4 Aug 2022 17:34:34 GMT Message-Id: <202208041734.274HYYcP054912@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Dimitry Andric Subject: git: 369ea0520a30 - main - [libm] Correct comments in s_cbrt[l].c List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@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/main X-Git-Reftype: branch X-Git-Commit: 369ea0520a3061c07400d7cd32172efb6af39815 Auto-Submitted: auto-generated ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1659634474; 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=QxPcNolDZvmo4iuCTYCt6Eg3krTsND/em68qr++Ixa8=; b=ZM67OrSLcRXXYFObOM97e4nMseyJQnfLU3jCmjas3WHAsxX+VLiZqGwynYGMTk0KUQNqxn K50rqIU8ghHbQLwLKIb9Jl2wBfBYGeKv6xHsdZ2ieAtBn3Jy//z5xE6p/SBlAXrN6lcG1Q dqt32n3GITDD3/WHMRssYR6cbpWGleDbIqYzP78aCXfBIUNlK3rCG8PT8wmngnlJfTbfUK 5NYRvuBKBtKdBtactkQZ/16gSKlVxF0KExezY/g5GpxbgsbUC5H2Hke0+Jv3YRmyREM6ok e2ArbAlq2sv/z67UQ7i5Wz8R7DansS/m4pUSoTuMTxDxlpA6BziIuRPK4Kzybw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1659634474; a=rsa-sha256; cv=none; b=t7p27LLtt5KMATL+C9Zx5QI+Gpt61z4zwK7ZDFa7NH+dOi47G7aB3aJkX6g7xqotelyGUx 2inLz7MuZQpMQ5wxEvdB3O5mEMIpRF0su8vbdBJQBQQW/n4oqZnQq+rjdUH6RdYBfDLp6U fG/ibRRXhBcw3saUElcRFA9f2Oy71ypclry2v09IIdFD0C+Gtx6Mex0SUB7Ih1zvjfsfqT WM66yd0V0FXVhvucw8Ouq4DQdvAL9CDPkLKi1I4eE6hs466KfK22zWJ3GXI4LdZ7kh+p8N Mu6vi5MyFAUN7d+q+kKApc/zfiI3TmyxDanoQ9VIclNNmX056boreTM4g17VYA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by dim: URL: https://cgit.FreeBSD.org/src/commit/?id=369ea0520a3061c07400d7cd32172efb6af39815 commit 369ea0520a3061c07400d7cd32172efb6af39815 Author: Steve Kargl AuthorDate: 2022-08-04 17:31:57 +0000 Commit: Dimitry Andric CommitDate: 2022-08-04 17:33:34 +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 --- 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);