From patchwork Wed Aug 17 20:54:05 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bryce Lanham X-Patchwork-Id: 110358 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [140.186.70.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 3FCBFB6FA3 for ; Thu, 18 Aug 2011 06:54:52 +1000 (EST) Received: from localhost ([::1]:46215 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qtn8O-0005AQ-Ob for incoming@patchwork.ozlabs.org; Wed, 17 Aug 2011 16:54:44 -0400 Received: from eggs.gnu.org ([140.186.70.92]:51539) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qtn8J-00058A-6W for qemu-devel@nongnu.org; Wed, 17 Aug 2011 16:54:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Qtn89-0007pa-Vd for qemu-devel@nongnu.org; Wed, 17 Aug 2011 16:54:39 -0400 Received: from mail-iy0-f171.google.com ([209.85.210.171]:55819) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Qtn84-0007pN-Mg for qemu-devel@nongnu.org; Wed, 17 Aug 2011 16:54:29 -0400 Received: by iyf13 with SMTP id 13so2654984iyf.30 for ; Wed, 17 Aug 2011 13:54:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer; bh=9ki+CTZVG8ixwhyN2JpHRdV4jzLsZok3y7I/NzyN6OI=; b=pci8HDVtD0RqMaGxDphoOqOHpuRfe7bL9kkbV8kU5ALYPrw440Agu06zguoXeLaIGV 2MkrbVtvIUaOZhlRAopbfRyvSvnMizrIR4Qg4g0T74YkFvm1v8tPVQAn8szE6MqJn1bZ EIg26os2oIXkTe6498BNCdkNci+JWqU+Gw/o8= Received: by 10.231.4.92 with SMTP id 28mr3043654ibq.33.1313614463706; Wed, 17 Aug 2011 13:54:23 -0700 (PDT) Received: from localhost.localdomain (betelgeuse.cs.uchicago.edu [128.135.24.226]) by mx.google.com with ESMTPS id h12sm228311ibe.3.2011.08.17.13.54.20 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 17 Aug 2011 13:54:21 -0700 (PDT) From: Bryce Lanham To: qemu-devel@nongnu.org Date: Wed, 17 Aug 2011 15:54:05 -0500 Message-Id: <1313614456-29404-1-git-send-email-blanham@gmail.com> X-Mailer: git-send-email 1.7.2.3 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 209.85.210.171 Cc: Laurent Vivier Subject: [Qemu-devel] [PATCH 100/111] m68k: use log10l() to compute log10_FP0() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Laurent Vivier Signed-off-by: Laurent Vivier --- target-m68k/helper.c | 22 +++++++--------------- 1 files changed, 7 insertions(+), 15 deletions(-) diff --git a/target-m68k/helper.c b/target-m68k/helper.c index f67a2d8..0c60093 100644 --- a/target-m68k/helper.c +++ b/target-m68k/helper.c @@ -1368,23 +1368,15 @@ void HELPER(ln_FP0)(CPUState *env) void HELPER(log10_FP0)(CPUState *env) { - float64 f, log2, log210; - floatx80 res; - - /* log10(x) = log2(x) / log2(10) */ - - DBG_FPUH("log10_FP0 %Lg", floatx80_to_ldouble(FP0_to_floatx80(env))); - f = floatx80_to_float64(FP0_to_floatx80(env), &env->fp_status); + floatx80 val; + long double res; - log2 = float64_log2(f, &env->fp_status); - log210 = float64_log2(floatx80_to_float64(floatx80_10, &env->fp_status), - &env->fp_status); - res = floatx80_div(float64_to_floatx80(log2, &env->fp_status), - float64_to_floatx80(log210, &env->fp_status), - &env->fp_status); - DBG_FPU(" = %Lg\n", floatx80_to_ldouble(res)); + val = FP0_to_floatx80(env); + DBG_FPUH("log10_FP0 %Lg", floatx80_to_ldouble(val)); + res = log10l(floatx80_to_ldouble(val)); + DBG_FPU(" = %Lg\n", res); - floatx80_to_FP0(env, res); + floatx80_to_FP0(env, ldouble_to_floatx80(res)); } void HELPER(atan_FP0)(CPUState *env)