From nobody Mon Apr 13 17:36:01 2026 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 4fvZMB1P8Kz6ZSwk for ; Mon, 13 Apr 2026 17:36:06 +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 "R12" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fvZMB0r1Zz3NhH for ; Mon, 13 Apr 2026 17:36:06 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1776101766; 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=6Y3ikc7Wx7GJU7oI9eRfDF8OtxgiCx5FdlEyoP76ZAA=; b=i6VN92XbLc0M01jTUXeBTXCSVKsKjcHuxKzkXNpLIyyrbfkjAbAC5gW1pxEAekggGiRb8c wa3omSyVx4HHm664cYgJuSS73XyOGShtiWtOhbtODBYphaF8YAiqs6UpbbqspfEfgnMKjv 0FVopTrjZJA3z8U8MxLSsGcRwQuH+8HOjKdv/eyMwYd2CwFbgqAy6ISVLuKowmrhyxf2Z2 HAuC92+40ULOmRYwmqFEKaQd4EI05+7vrM0QMAfoD9bT0o5CUcexKjYS/UhWlRRcOJD7TN 8YaD51c5rvSyATvCsmsycpdSIk6S/iDQamb1y3vVjYGIIfKtPON0CixNyJTBmQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1776101766; a=rsa-sha256; cv=none; b=FnBGU0qnI0XBErZYVLJClNHmf2mRHT6DyyfQjdWpLAVR4OdPqOZOZpw7SRQBHHtiFlcx/r nVIaN3vkLrxzfULAGMI3bbOnGp4ezl4WtvqPQo6ydRM5K6WmQpUWJ2qLStT2x3ZS9T0zfM 0aW/L7uQEHQ0KO1hhm3lVXRKULHXZYzUQa1NSxEzi/SKr+/DnnADwBloS6RvexHL/+Ivrh 25dJUQp4uotfYLSPAA2JctVVN6kggbgCbBGEjWgAi7FJN1jrWaMy5f1MEs7d3CZ3UoGyx6 qV9ju9YVRx4rTmBDQGFs3En3JC5TEUy1dqErE2KffJdZ9rBrUl5AQ5uRR5GIxg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1776101766; 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=6Y3ikc7Wx7GJU7oI9eRfDF8OtxgiCx5FdlEyoP76ZAA=; b=vNpbTQlOy5kwuqiltnt66p0VcS8BvADxarul1ewxUaZxi++0JhmCAE/3qdKQ160NX9gp+r I2rtTTRSgGYQtuAHr6jdXa2CQe5ZvKFhycBwNv0nOxhbZ5JckbM8SiBRhKHU/jfjLVK6UQ qRqhOs9n4RZEb2dK5s+pSm/k3SIsuT2NUn/C6Moi30zZWVs1wF/JyQEHmjcIgNNAvNb5v/ GqTgRPNpRUCJd9CrBzcR6gKRn0sdyxfqWgvTGmi1wgYW70gQ9JYF1/BJ+TrFiYpvJsZuF0 aEGn4IIVDC4iGvDP+Hu5rvuoBLPH7+ynaEbsyUw3FK2v84Q/0tX13scxfzVI9A== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4fvZMB0R2Kz1CVh for ; Mon, 13 Apr 2026 17:36:06 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 33c20 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Mon, 13 Apr 2026 17:36:01 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Ed Maste Subject: git: 855507463e0d - stable/15 - fmax.3: Add caveat for going beyond C std requirements 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: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: emaste X-Git-Repository: src X-Git-Refname: refs/heads/stable/15 X-Git-Reftype: branch X-Git-Commit: 855507463e0d3903d31aa7c084efbf4f819b5d63 Auto-Submitted: auto-generated Date: Mon, 13 Apr 2026 17:36:01 +0000 Message-Id: <69dd2981.33c20.18a98019@gitrepo.freebsd.org> The branch stable/15 has been updated by emaste: URL: https://cgit.FreeBSD.org/src/commit/?id=855507463e0d3903d31aa7c084efbf4f819b5d63 commit 855507463e0d3903d31aa7c084efbf4f819b5d63 Author: Ed Maste AuthorDate: 2026-04-02 21:59:42 +0000 Commit: Ed Maste CommitDate: 2026-04-13 17:35:35 +0000 fmax.3: Add caveat for going beyond C std requirements libm's fmax and fmin family of functions treat +0.0 as greater than -0.0. This is not required by the C standard, so the user may not see this behaviour due to compiler optimization. PR: 294214 Reviewed by: fuz Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D56230 (cherry picked from commit 7764e9ca28a9702aed4ba7391e055ec2fcf35c41) --- lib/msun/man/fmax.3 | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/lib/msun/man/fmax.3 b/lib/msun/man/fmax.3 index 25fc9b6d518a..873a19375ce5 100644 --- a/lib/msun/man/fmax.3 +++ b/lib/msun/man/fmax.3 @@ -22,7 +22,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd June 29, 2004 +.Dd April 6, 2026 .Dt FMAX 3 .Os .Sh NAME @@ -68,10 +68,6 @@ functions return the smaller of .Fa x and .Fa y . -They treat -.Li +0.0 -as being larger than -.Li -0.0 . If one argument is an \*(Na, then the other argument is returned. If both arguments are \*(Nas, then the result is an \*(Na. These routines do not raise any floating-point exceptions. @@ -90,6 +86,13 @@ and .Fn fminl functions conform to .St -isoC-99 . +.Sh CAVEATS +The library implementations of these functions treat +.Li +0.0 +as being larger than +.Li -0.0 . +This behavior is not specified by the C standard, is not portable, +and may not occur in light of compiler optimizations. .Sh HISTORY These routines first appeared in .Fx 5.3 .