From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 81B52C2B9F8 for ; Tue, 25 May 2021 16:34:36 +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 1D3C2611C2 for ; Tue, 25 May 2021 16:34:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1D3C2611C2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:45730 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lla0p-0008JP-6q for qemu-devel@archiver.kernel.org; Tue, 25 May 2021 12:34:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60530) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1llYee-0001y9-1V for qemu-devel@nongnu.org; Tue, 25 May 2021 11:07:37 -0400 Received: from mail-pg1-x531.google.com ([2607:f8b0:4864:20::531]:43812) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1llYeQ-0006jM-0P for qemu-devel@nongnu.org; Tue, 25 May 2021 11:07:35 -0400 Received: by mail-pg1-x531.google.com with SMTP id e22so7229707pgv.10 for ; Tue, 25 May 2021 08:07:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=jRtuMx867iiF9LnMJh9kaoCKipyhalwdeBb7t+R/rbM=; b=Kmy2FyQhJXUlQH1RDfhnjYgU/XNv8JAVpeMeD+l3H+4s647y2BhRIUFXXOZbRS4Evb L0iEGhsI3oBYbLXn2PSECdNqmuyhyDrQR5t4mhYAr9kopa3wp3+jqkMmxP4jQ3nYV2SE dc/Vij28uGnFlaggkyBm2c+JbUE3L5aq3i2mzqc12JemOCOJwIVjn1N9r0gPcuvlVGf+ xow1KadOkSAjBm68P7MNGlJdelbFdtQnqHFhfFiECJUXP3o8qwZw9JqQhMXKcVIQFRHZ e1C9EBf7WCJmv81IXzLygejxCD1gkbiH7dG1L6FCCfDWCpwI9cSatTUQu/MwwKbr1VrK Yucw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=jRtuMx867iiF9LnMJh9kaoCKipyhalwdeBb7t+R/rbM=; b=ZjjDBG4fBeTk3jBg28CRbENJYaRW8QvokaKa0V+oVy+4hILbysyox3Ct9qEKb/Lqvq ZbYcZ4D4jcQF5nVZFzmvybF9mEzfMB/EtHaXb9hJ9bkN7wVkKCl85x0rT5jNheFIk1tZ hNARNhDMBejbZSL7MsUCglG832xCK5uFnZ8E1MOlDDn20gXJxTaJyeY1fDER7Ky85js9 Df+bRnC3Dg3D50IwAF6uhNkysTSXFboy11zh69EYo28l6PHtMP7ew0q3d2P666Bux4YT 8jYs/8ZuRck7MBZFyzU3UVWyxnYIYfHoe7E+QNuBCqrYKt3w6kwF21vccoKe+Uy8pLG+ dJVA== X-Gm-Message-State: AOAM532N6nQ0mUZN+5f+zDyXof7ggYS5fiRKYx3URc4+BBl5VhBnEk5n OtjtTtnFQQObyDzZNL8NHw3S9Yn6FUdq+g== X-Google-Smtp-Source: ABdhPJzLlP/0H4/HqV8L1Y88/S5eOoLMHPcBv36b+TQc39yP76VzVfzJWpZOAz44qDhwKVDrjAElBQ== X-Received: by 2002:a63:5052:: with SMTP id q18mr19338140pgl.349.1621955239085; Tue, 25 May 2021 08:07:19 -0700 (PDT) Received: from localhost.localdomain (174-21-70-228.tukw.qwest.net. [174.21.70.228]) by smtp.gmail.com with ESMTPSA id z19sm2231943pjq.11.2021.05.25.08.07.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 May 2021 08:07:18 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 18/28] softfloat: Convert floatx80_round_to_int to FloatParts Date: Tue, 25 May 2021 08:06:56 -0700 Message-Id: <20210525150706.294968-19-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210525150706.294968-1-richard.henderson@linaro.org> References: <20210525150706.294968-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::531; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x531.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-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, david@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Richard Henderson --- fpu/softfloat.c | 116 ++++++------------------------------------------ 1 file changed, 13 insertions(+), 103 deletions(-) diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 1f7260caec..5c4a32bcfc 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -2610,6 +2610,19 @@ float128 float128_round_to_int(float128 a, float_status *s) return float128_round_pack_canonical(&p, s); } +floatx80 floatx80_round_to_int(floatx80 a, float_status *status) +{ + FloatParts128 p; + + if (!floatx80_unpack_canonical(&p, a, status)) { + return floatx80_default_nan(status); + } + + parts_round_to_int(&p, status->float_rounding_mode, 0, status, + &floatx80_params[status->floatx80_rounding_precision]); + return floatx80_round_pack_canonical(&p, status); +} + /* * Floating-point to signed integer conversions */ @@ -5803,109 +5816,6 @@ floatx80 floatx80_round(floatx80 a, float_status *status) return floatx80_round_pack_canonical(&p, status); } -/*---------------------------------------------------------------------------- -| Rounds the extended double-precision floating-point value `a' to an integer, -| and returns the result as an extended quadruple-precision floating-point -| value. The operation is performed according to the IEC/IEEE Standard for -| Binary Floating-Point Arithmetic. -*----------------------------------------------------------------------------*/ - -floatx80 floatx80_round_to_int(floatx80 a, float_status *status) -{ - bool aSign; - int32_t aExp; - uint64_t lastBitMask, roundBitsMask; - floatx80 z; - - if (floatx80_invalid_encoding(a)) { - float_raise(float_flag_invalid, status); - return floatx80_default_nan(status); - } - aExp = extractFloatx80Exp( a ); - if ( 0x403E <= aExp ) { - if ( ( aExp == 0x7FFF ) && (uint64_t) ( extractFloatx80Frac( a )<<1 ) ) { - return propagateFloatx80NaN(a, a, status); - } - return a; - } - if ( aExp < 0x3FFF ) { - if ( ( aExp == 0 ) - && ( (uint64_t) ( extractFloatx80Frac( a ) ) == 0 ) ) { - return a; - } - float_raise(float_flag_inexact, status); - aSign = extractFloatx80Sign( a ); - switch (status->float_rounding_mode) { - case float_round_nearest_even: - if ( ( aExp == 0x3FFE ) && (uint64_t) ( extractFloatx80Frac( a )<<1 ) - ) { - return - packFloatx80( aSign, 0x3FFF, UINT64_C(0x8000000000000000)); - } - break; - case float_round_ties_away: - if (aExp == 0x3FFE) { - return packFloatx80(aSign, 0x3FFF, UINT64_C(0x8000000000000000)); - } - break; - case float_round_down: - return - aSign ? - packFloatx80( 1, 0x3FFF, UINT64_C(0x8000000000000000)) - : packFloatx80( 0, 0, 0 ); - case float_round_up: - return - aSign ? packFloatx80( 1, 0, 0 ) - : packFloatx80( 0, 0x3FFF, UINT64_C(0x8000000000000000)); - - case float_round_to_zero: - break; - default: - g_assert_not_reached(); - } - return packFloatx80( aSign, 0, 0 ); - } - lastBitMask = 1; - lastBitMask <<= 0x403E - aExp; - roundBitsMask = lastBitMask - 1; - z = a; - switch (status->float_rounding_mode) { - case float_round_nearest_even: - z.low += lastBitMask>>1; - if ((z.low & roundBitsMask) == 0) { - z.low &= ~lastBitMask; - } - break; - case float_round_ties_away: - z.low += lastBitMask >> 1; - break; - case float_round_to_zero: - break; - case float_round_up: - if (!extractFloatx80Sign(z)) { - z.low += roundBitsMask; - } - break; - case float_round_down: - if (extractFloatx80Sign(z)) { - z.low += roundBitsMask; - } - break; - default: - abort(); - } - z.low &= ~ roundBitsMask; - if ( z.low == 0 ) { - ++z.high; - z.low = UINT64_C(0x8000000000000000); - } - if (z.low != a.low) { - float_raise(float_flag_inexact, status); - } - return z; - -} - /*---------------------------------------------------------------------------- | Returns the remainder of the extended double-precision floating-point value | `a' with respect to the corresponding value `b'. The operation is performed -- 2.25.1