From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2a07:de40:b251:101:10:150:64:2]) by sourceware.org (Postfix) with ESMTPS id 2F1393858D32 for ; Tue, 2 Apr 2024 12:12:12 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 2F1393858D32 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=suse.de ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 2F1393858D32 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=2a07:de40:b251:101:10:150:64:2 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1712059933; cv=none; b=K01F5oYsJjLXcux/Ry/CC2quDkhGy5xNxCJn1trZZNi8K4e79un3hZpBlg9jo6DQY9QDRB+GqsH6lf7gQi7AtPh1E8Vj/CtJQyyrOxGV6i1pW3NBLz34Jl/J//0PKq9Jtu9g6mOXj14rNoWZORdtTgH4zSPrAe8BdT6r40m7N9A= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1712059933; c=relaxed/simple; bh=yN5AhUCyqK01VvOZ9YeExJB2wVV17Hz7oGg4Dvw3wQ8=; h=DKIM-Signature:DKIM-Signature:From:To:Subject:Date:Message-ID: MIME-Version; b=TjAUdCJbOqGhq1/rYudt7zVM20i/ZWy/BEgkbwU4cFhcaKUtTzHzAT5VcZ9r3dt7Y05gyomoj0r+a7xIT2PUbDoq60Dz947EK7EKSoQkuFm0+cqYiNS9qkrSJsAbw00fFltQAeBQMTe0UBxlOWxiECvVB3GiNfbK+zOynR7VRKI= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from hawking.nue2.suse.org (unknown [10.168.4.11]) by smtp-out2.suse.de (Postfix) with ESMTP id C69D45BCC6; Tue, 2 Apr 2024 12:12:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1712059930; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=tOPoFDrKUlmnbFd2Gsw5ZhdZvROjsXG1RjYb7Sr2QaA=; b=zfWvGjUGiXFcnQgUwDsuyv8ABvwz3moG8UZmIXHyzDIp2K/w8nSJwdX/wyU3dloNs9KQwr C/lKpd1sFucngYkzKYXMqrk3UP6F6Yr7LuVfAL3jvWcCTNhSRetlw7+vKWBWmPcIqHcscD riVda9GNv7sSGzb8LFxCeu6P4ibTUIM= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1712059930; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=tOPoFDrKUlmnbFd2Gsw5ZhdZvROjsXG1RjYb7Sr2QaA=; b=L6pR3Zitpq7m1RR3dm0WZqlWca8PGTD8CdL1xLJ+BPQ/4zfvNqSdQrogign1+J82pzObMO BfTJiw6Z7G1ZCYCQ== Authentication-Results: smtp-out2.suse.de; none Received: by hawking.nue2.suse.org (Postfix, from userid 17005) id B50A14A04EC; Tue, 2 Apr 2024 14:12:10 +0200 (CEST) From: Andreas Schwab To: Xi Ruoyao Cc: caiyinyu , Florian Weimer , josmyers@redhat.com, libc-alpha@sourceware.org, adhemerval.zanella@linaro.org Subject: Re: [PATCH] LoongArch: Add soft floating-point fe* function implementations. In-Reply-To: <98f2d5adc158e05a3fa487a8a3a3899734b97a45.camel@xry111.site> (Xi Ruoyao's message of "Tue, 02 Apr 2024 18:40:06 +0800") References: <20240331101400.474159-1-caiyinyu@loongson.cn> <87le5x1ar2.fsf@oldenburg3.str.redhat.com> <393612ff-b4fa-6047-d203-5b23bd96d29a@loongson.cn> <98f2d5adc158e05a3fa487a8a3a3899734b97a45.camel@xry111.site> X-Yow: Not SENSUOUS... only ``FROLICSOME''... and in need of DENTAL WORK... in PAIN!!! Date: Tue, 02 Apr 2024 14:12:10 +0200 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spamd-Result: default: False [-2.82 / 50.00]; BAYES_HAM(-2.62)[98.30%]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_NO_TLS_LAST(0.10)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; TO_DN_SOME(0.00)[]; RCVD_COUNT_ONE(0.00)[1]; ARC_NA(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; RCPT_COUNT_FIVE(0.00)[6]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:email] X-Spam-Score: -2.82 X-Spam-Level: X-Spam-Status: No, score=-3.2 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Apr 02 2024, Xi Ruoyao wrote: > The problem is this change is breaking ABI. The behavior of > feenableexcept etc. *is* a part of the ABI. For example, if a not so > careful programmer invokes feenableexcept(FE_INVALID) and then > mistakenly invokes something like acos(1.0000001), before this change > the program will continue to run with a NaN, but after this change it'll > crash with SIGFPE. If you ask for FE_INVALID exceptions, you need to be prepared for them. This is not the default mode of operation. -- Andreas Schwab, SUSE Labs, schwab@suse.de GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different."