From patchwork Mon Dec 6 17:00:05 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 74414 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id A7023B70F4 for ; Tue, 7 Dec 2010 04:42:18 +1100 (EST) Received: from localhost ([127.0.0.1]:56946 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PPeVt-00043e-TN for incoming@patchwork.ozlabs.org; Mon, 06 Dec 2010 12:06:10 -0500 Received: from [140.186.70.92] (port=56929 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PPeQC-0002NQ-Dv for qemu-devel@nongnu.org; Mon, 06 Dec 2010 12:00:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PPeQA-00062Q-JS for qemu-devel@nongnu.org; Mon, 06 Dec 2010 12:00:16 -0500 Received: from mnementh.archaic.org.uk ([81.2.115.146]:34388) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PPeQA-00061v-6c for qemu-devel@nongnu.org; Mon, 06 Dec 2010 12:00:14 -0500 Received: from pm215 by mnementh.archaic.org.uk with local (Exim 4.69) (envelope-from ) id 1PPeQ7-0007mD-Se for qemu-devel@nongnu.org; Mon, 06 Dec 2010 17:00:11 +0000 From: Peter Maydell To: qemu-devel@nongnu.org Date: Mon, 6 Dec 2010 17:00:05 +0000 Message-Id: <1291654811-29863-5-git-send-email-peter.maydell@linaro.org> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1291654811-29863-1-git-send-email-peter.maydell@linaro.org> References: <1291654811-29863-1-git-send-email-peter.maydell@linaro.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) Subject: [Qemu-devel] [PATCH 04/10] softfloat: Add float*_is_any_nan() functions X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add float*_is_any_nan() functions which return true if the argument is a NaN of any kind (quiet or signalling). Signed-off-by: Peter Maydell Reviewed-by: Nathan Froyd --- fpu/softfloat.h | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/fpu/softfloat.h b/fpu/softfloat.h index 9528825..9bece80 100644 --- a/fpu/softfloat.h +++ b/fpu/softfloat.h @@ -314,6 +314,11 @@ INLINE int float32_is_zero(float32 a) return (float32_val(a) & 0x7fffffff) == 0; } +INLINE int float32_is_any_nan(float32 a) +{ + return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL); +} + #define float32_zero make_float32(0) #define float32_one make_float32(0x3f800000) #define float32_ln2 make_float32(0x3f317218) @@ -386,6 +391,11 @@ INLINE int float64_is_zero(float64 a) return (float64_val(a) & 0x7fffffffffffffffLL) == 0; } +INLINE int float64_is_any_nan(float64 a) +{ + return ((float64_val(a) & ~(1ULL << 63)) > 0x7ff0000000000000ULL); +} + #define float64_zero make_float64(0) #define float64_one make_float64(0x3ff0000000000000LL) #define float64_ln2 make_float64(0x3fe62e42fefa39efLL)