From nobody Mon Apr 13 17:43:20 2026 X-Original-To: dev-commits-src-branches@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 4fvZWX3hMVz6ZT75 for ; Mon, 13 Apr 2026 17:43:20 +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 4fvZWX2wZpz3SXd for ; Mon, 13 Apr 2026 17:43:20 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1776102200; 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=p7Qk3/Bsa+8JbHlLEpAZEpkfHGAzD9/RXQzg7vutvkc=; b=GU4a8vbJU/0TzI9Q1p/g4s55zqVT9o3y8mCuFgzaEL//01aX8g93GWfga94+Pd0vnHxyg6 RprQZ0cJL0JbzvG11auQ9LcccnmYvC6FvCgM1L/oBVX8BFMZf1zunaVftaz/QK345WOhSX 7WFXx0EI8zd5e3oQ8AfTy1sLm2K6166Ku7TRK3PKG4J0BsDNsjZlXhsWjF6rsN/T9F+UUn jPh869Lr1PiEocsbcsj2xWKLaCfnNTotvCDl7kZ0BFEetO4ibaiV7ujZ5El8NkE01m7hyz LsOTZToU2JoH9wqhQgQOa3F+rsnSrEJyMKq84M8t8AoG7sK4stcjy2z7mUixQQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1776102200; a=rsa-sha256; cv=none; b=mynHTNbFDmUnX8MtWBITLpZq7XiLY87h6yjJYOFmftMRM3xj+TaLen+6SW/n756EgvGQ9w 025W3uTyHCUKhLzc3ERSGE16YR2ua3+zxgFZuhV15txe63aiYbg1w+ap8RUMAmIXJuuLRg TmNyUiC/y90gkdsGkNu7vzbNVokr3/OE3U0lWTmRYPgVyIrH81mRy3XTSaZ48t5E0KzLq5 X7034yWUbuZghfiHCMaqwSuId/IRgvHpZ0oGBQk6uOuH3z99J6ODggnv/PZvNSO4LUf3V9 5PZkrSSKpHG63/vcrTj/2dZLdF5dCpDAW/WcxS4gDFtX8uw3+bAKIShtLaxL2w== 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=1776102200; 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=p7Qk3/Bsa+8JbHlLEpAZEpkfHGAzD9/RXQzg7vutvkc=; b=ml2tB/gCtnjlA8xZUdgEoEHGd6DgoQHDtIRqbAb+g6cr6OcFmqac0LhZ4VThnTjKlcSwNL OhzEqUevgU7Fy/l1n6IYxCpb4KhjeYMbplGdexoBiUFJYzNnSJRq2qG9gbsN02dBVQn2cF QJU31e/tukSZ4rhTO2LhLp+xgf5FJYqu3Uoof8WCROeoUNeuV2vZ+diLaoYtn+9vhGag+W 9+xXf8SgOLyYH1urjbBQlvinhV2ydtUkLVJiCNYN9Azjxg0IBkyIQUSp1PmOEHS2lt/PzE puK5mgnnuhcBIxijyIqM3VFOrmuxPQ3KzA+YDahI4c2NpzZyoKGdRV9CDngHJw== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4fvZWX1p0Hz1CZG for ; Mon, 13 Apr 2026 17:43:20 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 31d6f by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Mon, 13 Apr 2026 17:43:20 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Ed Maste Subject: git: dc6149102509 - stable/14 - fmax.3: Add caveat for going beyond C std requirements List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-branches@freebsd.org Sender: owner-dev-commits-src-branches@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/14 X-Git-Reftype: branch X-Git-Commit: dc61491025091d9e61048cc3cfb18d25ed354a8b Auto-Submitted: auto-generated Date: Mon, 13 Apr 2026 17:43:20 +0000 Message-Id: <69dd2b38.31d6f.fc670d3@gitrepo.freebsd.org> The branch stable/14 has been updated by emaste: URL: https://cgit.FreeBSD.org/src/commit/?id=dc61491025091d9e61048cc3cfb18d25ed354a8b commit dc61491025091d9e61048cc3cfb18d25ed354a8b Author: Ed Maste AuthorDate: 2026-04-02 21:59:42 +0000 Commit: Ed Maste CommitDate: 2026-04-13 17:43:05 +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) (cherry picked from commit 855507463e0d3903d31aa7c084efbf4f819b5d63) --- 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 .