From patchwork Sun Jul 12 23:45:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: LIU Zhiwei X-Patchwork-Id: 11658437 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A150413B6 for ; Sun, 12 Jul 2020 23:48:03 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8315B20674 for ; Sun, 12 Jul 2020 23:48:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8315B20674 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-sky.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:32942 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1julhS-0003bT-O7 for patchwork-qemu-devel@patchwork.kernel.org; Sun, 12 Jul 2020 19:48:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41882) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1julfC-00072k-VQ for qemu-devel@nongnu.org; Sun, 12 Jul 2020 19:45:44 -0400 Received: from smtp2200-217.mail.aliyun.com ([121.197.200.217]:35461) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1julf6-0007FH-T4 for qemu-devel@nongnu.org; Sun, 12 Jul 2020 19:45:42 -0400 X-Alimail-AntiSpam: AC=CONTINUE; BC=0.08104733|-1; CH=green; DM=|CONTINUE|false|; DS=CONTINUE|ham_alarm|0.159639-0.000141355-0.840219; FP=0|0|0|0|0|-1|-1|-1; HT=e01l07447; MF=zhiwei_liu@c-sky.com; NM=1; PH=DS; RN=6; RT=6; SR=0; TI=SMTPD_---.I0oni3i_1594597526; Received: from L-PF1D6DP4-1208.hz.ali.com(mailfrom:zhiwei_liu@c-sky.com fp:SMTPD_---.I0oni3i_1594597526) by smtp.aliyun-inc.com(10.147.40.7); Mon, 13 Jul 2020 07:45:27 +0800 From: LIU Zhiwei To: qemu-devel@nongnu.org Subject: [RFC PATCH 2/8] fpu/softfloat: use the similiar logic to recognize sNaN and qNaN Date: Mon, 13 Jul 2020 07:45:15 +0800 Message-Id: <20200712234521.3972-3-zhiwei_liu@c-sky.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20200712234521.3972-1-zhiwei_liu@c-sky.com> References: <20200712234521.3972-1-zhiwei_liu@c-sky.com> MIME-Version: 1.0 Received-SPF: none client-ip=121.197.200.217; envelope-from=zhiwei_liu@c-sky.com; helo=smtp2200-217.mail.aliyun.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/12 19:45:28 X-ACL-Warn: Detected OS = Linux 3.x [generic] [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_NONE=0.001, UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org, wenmeng_zhang@c-sky.com, richard.henderson@linaro.org, LIU Zhiwei , wxy194768@alibaba-inc.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: LIU Zhiwei --- fpu/softfloat-specialize.inc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fpu/softfloat-specialize.inc.c b/fpu/softfloat-specialize.inc.c index 034d18199c..6b778a7830 100644 --- a/fpu/softfloat-specialize.inc.c +++ b/fpu/softfloat-specialize.inc.c @@ -292,7 +292,7 @@ bool float32_is_quiet_nan(float32 a_, float_status *status) if (snan_bit_is_one(status)) { return (((a >> 22) & 0x1FF) == 0x1FE) && (a & 0x003FFFFF); } else { - return ((uint32_t)(a << 1) >= 0xFF800000); + return ((a >> 22) & 0x1FF) == 0x1FF; } #endif } @@ -309,7 +309,7 @@ bool float32_is_signaling_nan(float32 a_, float_status *status) #else uint32_t a = float32_val(a_); if (snan_bit_is_one(status)) { - return ((uint32_t)(a << 1) >= 0xFF800000); + return ((a >> 22) & 0x1FF) == 0x1FF; } else { return (((a >> 22) & 0x1FF) == 0x1FE) && (a & 0x003FFFFF); } @@ -647,7 +647,7 @@ bool float64_is_quiet_nan(float64 a_, float_status *status) return (((a >> 51) & 0xFFF) == 0xFFE) && (a & 0x0007FFFFFFFFFFFFULL); } else { - return ((a << 1) >= 0xFFF0000000000000ULL); + return ((a >> 51) & 0xFFF) == 0xFFF; } #endif } @@ -664,7 +664,7 @@ bool float64_is_signaling_nan(float64 a_, float_status *status) #else uint64_t a = float64_val(a_); if (snan_bit_is_one(status)) { - return ((a << 1) >= 0xFFF0000000000000ULL); + return ((a >> 51) & 0xFFF) == 0xFFF; } else { return (((a >> 51) & 0xFFF) == 0xFFE) && (a & UINT64_C(0x0007FFFFFFFFFFFF));