From patchwork Wed Dec 23 11:55:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Siddhesh Poyarekar X-Patchwork-Id: 41532 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 22BA13892016; Wed, 23 Dec 2020 11:56:27 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 22BA13892016 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1608724587; bh=wwy+WA8Bj0nQdh2ZQRE34SCL09UdT5pxfU0hTkvjVCw=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=jsQKxlUkcU/2DQVn48XuQzhQL0nF674aIVwrcPaOEy3DyhVhVyIvdskY8K7KPe+rE riDtFYxx4CyMVzWECc2i25xNeEiDAkjBBMfsAy4dmEtMzB95ssRiVgue2zoGJbxHmy Y9wtYWLEPeRZFfQm+zOnZr/umAvfswY+qlS5Dn7k= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from bumble.birch.relay.mailchannels.net (bumble.birch.relay.mailchannels.net [23.83.209.25]) by sourceware.org (Postfix) with ESMTPS id 1CDF4389200F for ; Wed, 23 Dec 2020 11:56:23 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 1CDF4389200F X-Sender-Id: dreamhost|x-authsender|siddhesh@gotplt.org Received: from relay.mailchannels.net (localhost [127.0.0.1]) by relay.mailchannels.net (Postfix) with ESMTP id E799F321A56; Wed, 23 Dec 2020 11:56:22 +0000 (UTC) Received: from pdx1-sub0-mail-a1.g.dreamhost.com (100-96-27-97.trex.outbound.svc.cluster.local [100.96.27.97]) (Authenticated sender: dreamhost) by relay.mailchannels.net (Postfix) with ESMTPA id 5269A320EF2; Wed, 23 Dec 2020 11:56:22 +0000 (UTC) X-Sender-Id: dreamhost|x-authsender|siddhesh@gotplt.org Received: from pdx1-sub0-mail-a1.g.dreamhost.com (pop.dreamhost.com [64.90.62.162]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384) by 0.0.0.0:2500 (trex/5.18.11); Wed, 23 Dec 2020 11:56:22 +0000 X-MC-Relay: Neutral X-MailChannels-SenderId: dreamhost|x-authsender|siddhesh@gotplt.org X-MailChannels-Auth-Id: dreamhost X-Sponge-Shrill: 3f86320929059ea2_1608724582581_694987250 X-MC-Loop-Signature: 1608724582581:2562893189 X-MC-Ingress-Time: 1608724582581 Received: from pdx1-sub0-mail-a1.g.dreamhost.com (localhost [127.0.0.1]) by pdx1-sub0-mail-a1.g.dreamhost.com (Postfix) with ESMTP id 17EF07F0A7; Wed, 23 Dec 2020 03:56:22 -0800 (PST) Received: from rhbox.intra.reserved-bit.com (unknown [1.186.101.110]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: siddhesh@gotplt.org) by pdx1-sub0-mail-a1.g.dreamhost.com (Postfix) with ESMTPSA id 115997F0A4; Wed, 23 Dec 2020 03:56:19 -0800 (PST) X-DH-BACKEND: pdx1-sub0-mail-a1 To: libc-alpha@sourceware.org Subject: [PATCH v2 2/5] x86 long double: Support pseudo numbers in isnanl Date: Wed, 23 Dec 2020 17:25:59 +0530 Message-Id: <20201223115602.3472627-3-siddhesh@sourceware.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201223115602.3472627-1-siddhesh@sourceware.org> References: <20201223115602.3472627-1-siddhesh@sourceware.org> MIME-Version: 1.0 X-Spam-Status: No, score=-9.0 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_NONE, KAM_DMARC_STATUS, RCVD_IN_BARRACUDACENTRAL, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NEUTRAL, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Siddhesh Poyarekar via Libc-alpha From: Siddhesh Poyarekar Reply-To: Siddhesh Poyarekar Cc: fweimer@redhat.com, joseph@codesourcery.com Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" This syncs up isnanl behaviour with gcc. Also move the isnanl implementation to sysdeps/x86 and remove the sysdeps/x86_64 version. Reviewed-by: Adhemerval Zanella --- sysdeps/{i386 => x86}/fpu/s_isnanl.c | 12 +++++++----- sysdeps/x86_64/fpu/s_isnanl.c | 1 - 2 files changed, 7 insertions(+), 6 deletions(-) rename sysdeps/{i386 => x86}/fpu/s_isnanl.c (76%) delete mode 100644 sysdeps/x86_64/fpu/s_isnanl.c diff --git a/sysdeps/i386/fpu/s_isnanl.c b/sysdeps/x86/fpu/s_isnanl.c similarity index 76% rename from sysdeps/i386/fpu/s_isnanl.c rename to sysdeps/x86/fpu/s_isnanl.c index fb97317bc9..45541df08a 100644 --- a/sysdeps/i386/fpu/s_isnanl.c +++ b/sysdeps/x86/fpu/s_isnanl.c @@ -28,16 +28,18 @@ static char rcsid[] = "$NetBSD: $"; int __isnanl(long double x) { - int32_t se,hx,lx; + int32_t se,hx,lx,pn; GET_LDOUBLE_WORDS(se,hx,lx,x); se = (se & 0x7fff) << 1; - /* The additional & 0x7fffffff is required because Intel's - extended format has the normally implicit 1 explicit - present. Sigh! */ + /* Detect pseudo-normal numbers, i.e. exponent is non-zero and the top + bit of the significand is not set. */ + pn = (uint32_t)((~hx & 0x80000000) & (se|(-se)))>>31; + /* Clear the significand bit when computing mantissa. */ lx |= hx & 0x7fffffff; se |= (uint32_t)(lx|(-lx))>>31; se = 0xfffe - se; - return (int)((uint32_t)(se))>>16; + + return (int)(((uint32_t)(se)) >> 16) | pn; } hidden_def (__isnanl) weak_alias (__isnanl, isnanl) diff --git a/sysdeps/x86_64/fpu/s_isnanl.c b/sysdeps/x86_64/fpu/s_isnanl.c deleted file mode 100644 index 06e69c3aeb..0000000000 --- a/sysdeps/x86_64/fpu/s_isnanl.c +++ /dev/null @@ -1 +0,0 @@ -#include