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GET /api/patches/1475756/?format=api
{ "id": 1475756, "url": "http://patchwork.ozlabs.org/api/patches/1475756/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20210508014802.892561-63-richard.henderson@linaro.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20210508014802.892561-63-richard.henderson@linaro.org>", "list_archive_url": null, "date": "2021-05-08T01:47:52", "name": "[62/72] softfloat: Convert floatx80_sqrt to FloatParts", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "bd9acc7b087e471fc19888eea922d10a44aa6952", "submitter": { "id": 72104, "url": "http://patchwork.ozlabs.org/api/people/72104/?format=api", "name": "Richard Henderson", "email": "richard.henderson@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20210508014802.892561-63-richard.henderson@linaro.org/mbox/", "series": [ { "id": 242770, "url": "http://patchwork.ozlabs.org/api/series/242770/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=242770", "date": "2021-05-08T01:46:53", "name": "Convert floatx80 and float128 to FloatParts", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/242770/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1475756/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1475756/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=<UNKNOWN>)", "ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=fbM6omQO;\n\tdkim-atps=neutral" ], "Received": [ "from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 4FcWWx4K80z9sX1\n\tfor <incoming@patchwork.ozlabs.org>; Sat, 8 May 2021 12:30:53 +1000 (AEST)", "from localhost ([::1]:39788 helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>)\n\tid 1lfCjz-0002F0-Gr\n\tfor incoming@patchwork.ozlabs.org; Fri, 07 May 2021 22:30:51 -0400", "from eggs.gnu.org ([2001:470:142:3::10]:41768)\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <richard.henderson@linaro.org>)\n id 1lfC8H-0003UM-94\n for qemu-devel@nongnu.org; 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a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20161025;\n h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n :references:mime-version:content-transfer-encoding;\n bh=t3Jy5CANfNVfC3/a+h+EOADacahyzwCmvSWB6DnAZSc=;\n b=BKDC7qN5pKSXqeR9hNNQusQB4xYetG+H+lWGugP70RcTPUFarw3kdsuzcKEW7vypIq\n vPMZvOjRO1tUkLx4dMKd6lqe3yExyZeQeXXD8h1Izs5LnJ2gJfyT8lcJC6lm2ItAG7iI\n pLuawlPKhbifIagG6/f8/0nwRJnbtba8KcBLO9l5KDs4UOACriEWqEqHQiThliNyt3se\n UDVxg2h/d2kprPD7Wp+1LDict6DbhVYNKm5ml0L5k6218+icolLEDO3U25/G1YVhbKgJ\n 6OWLZOxo/FyeRPPzglQR0NsD+TrKp0vG0lbDsPmtTg8lkwmLBhVuQqXHhUQHl4DjQKC4\n pOUQ==", "X-Gm-Message-State": "AOAM5301+HpCId8/gPtJGPG6d582HAY85SoJNXLfj2ynyIIj/fFiXnKQ\n jmYsYdWStfvaTKSV+gan5tE+APzwvv2FGQ==", "X-Google-Smtp-Source": "\n ABdhPJxOuwkOvGjlrumQwmqiQXEjuGpbcqrPjAlCvl60YuGJsgeYhVJC2mf6XZYLLY0JkVdxt+UCOw==", "X-Received": "by 2002:a17:90b:17d2:: with SMTP id\n me18mr13979402pjb.22.1620438704139;\n Fri, 07 May 2021 18:51:44 -0700 (PDT)", "From": "Richard Henderson <richard.henderson@linaro.org>", "To": "qemu-devel@nongnu.org", "Subject": "[PATCH 62/72] softfloat: Convert floatx80_sqrt to FloatParts", "Date": "Fri, 7 May 2021 18:47:52 -0700", "Message-Id": "<20210508014802.892561-63-richard.henderson@linaro.org>", "X-Mailer": "git-send-email 2.25.1", "In-Reply-To": "<20210508014802.892561-1-richard.henderson@linaro.org>", "References": "<20210508014802.892561-1-richard.henderson@linaro.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2607:f8b0:4864:20::62c;\n envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62c.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,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n 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": "<qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Cc": "alex.bennee@linaro.org, david@redhat.com", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "\"Qemu-devel\"\n <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>" }, "content": "Signed-off-by: Richard Henderson <richard.henderson@linaro.org>\n---\n fpu/softfloat.c | 82 +++++++------------------------------------------\n 1 file changed, 11 insertions(+), 71 deletions(-)", "diff": "diff --git a/fpu/softfloat.c b/fpu/softfloat.c\nindex 352f359bc5..7050d8f012 100644\n--- a/fpu/softfloat.c\n+++ b/fpu/softfloat.c\n@@ -3883,6 +3883,17 @@ float128 QEMU_FLATTEN float128_sqrt(float128 a, float_status *status)\n return float128_round_pack_canonical(&p, status);\n }\n \n+floatx80 floatx80_sqrt(floatx80 a, float_status *s)\n+{\n+ FloatParts128 p;\n+\n+ if (!floatx80_unpack_canonical(&p, a, s)) {\n+ return floatx80_default_nan(s);\n+ }\n+ parts_sqrt(&p, s, &floatx80_params[s->floatx80_rounding_precision]);\n+ return floatx80_round_pack_canonical(&p, s);\n+}\n+\n /*----------------------------------------------------------------------------\n | The pattern for a default generated NaN.\n *----------------------------------------------------------------------------*/\n@@ -6046,77 +6057,6 @@ floatx80 floatx80_mod(floatx80 a, floatx80 b, float_status *status)\n return floatx80_modrem(a, b, true, "ient, status);\n }\n \n-/*----------------------------------------------------------------------------\n-| Returns the square root of the extended double-precision floating-point\n-| value `a'. The operation is performed according to the IEC/IEEE Standard\n-| for Binary Floating-Point Arithmetic.\n-*----------------------------------------------------------------------------*/\n-\n-floatx80 floatx80_sqrt(floatx80 a, float_status *status)\n-{\n- bool aSign;\n- int32_t aExp, zExp;\n- uint64_t aSig0, aSig1, zSig0, zSig1, doubleZSig0;\n- uint64_t rem0, rem1, rem2, rem3, term0, term1, term2, term3;\n-\n- if (floatx80_invalid_encoding(a)) {\n- float_raise(float_flag_invalid, status);\n- return floatx80_default_nan(status);\n- }\n- aSig0 = extractFloatx80Frac( a );\n- aExp = extractFloatx80Exp( a );\n- aSign = extractFloatx80Sign( a );\n- if ( aExp == 0x7FFF ) {\n- if ((uint64_t)(aSig0 << 1)) {\n- return propagateFloatx80NaN(a, a, status);\n- }\n- if ( ! aSign ) return a;\n- goto invalid;\n- }\n- if ( aSign ) {\n- if ( ( aExp | aSig0 ) == 0 ) return a;\n- invalid:\n- float_raise(float_flag_invalid, status);\n- return floatx80_default_nan(status);\n- }\n- if ( aExp == 0 ) {\n- if ( aSig0 == 0 ) return packFloatx80( 0, 0, 0 );\n- normalizeFloatx80Subnormal( aSig0, &aExp, &aSig0 );\n- }\n- zExp = ( ( aExp - 0x3FFF )>>1 ) + 0x3FFF;\n- zSig0 = estimateSqrt32( aExp, aSig0>>32 );\n- shift128Right( aSig0, 0, 2 + ( aExp & 1 ), &aSig0, &aSig1 );\n- zSig0 = estimateDiv128To64( aSig0, aSig1, zSig0<<32 ) + ( zSig0<<30 );\n- doubleZSig0 = zSig0<<1;\n- mul64To128( zSig0, zSig0, &term0, &term1 );\n- sub128( aSig0, aSig1, term0, term1, &rem0, &rem1 );\n- while ( (int64_t) rem0 < 0 ) {\n- --zSig0;\n- doubleZSig0 -= 2;\n- add128( rem0, rem1, zSig0>>63, doubleZSig0 | 1, &rem0, &rem1 );\n- }\n- zSig1 = estimateDiv128To64( rem1, 0, doubleZSig0 );\n- if ( ( zSig1 & UINT64_C(0x3FFFFFFFFFFFFFFF) ) <= 5 ) {\n- if ( zSig1 == 0 ) zSig1 = 1;\n- mul64To128( doubleZSig0, zSig1, &term1, &term2 );\n- sub128( rem1, 0, term1, term2, &rem1, &rem2 );\n- mul64To128( zSig1, zSig1, &term2, &term3 );\n- sub192( rem1, rem2, 0, 0, term2, term3, &rem1, &rem2, &rem3 );\n- while ( (int64_t) rem1 < 0 ) {\n- --zSig1;\n- shortShift128Left( 0, zSig1, 1, &term2, &term3 );\n- term3 |= 1;\n- term2 |= doubleZSig0;\n- add192( rem1, rem2, rem3, 0, term2, term3, &rem1, &rem2, &rem3 );\n- }\n- zSig1 |= ( ( rem1 | rem2 | rem3 ) != 0 );\n- }\n- shortShift128Left( 0, zSig1, 1, &zSig0, &zSig1 );\n- zSig0 |= doubleZSig0;\n- return roundAndPackFloatx80(status->floatx80_rounding_precision,\n- 0, zExp, zSig0, zSig1, status);\n-}\n-\n /*----------------------------------------------------------------------------\n | Returns the result of converting the quadruple-precision floating-point\n | value `a' to the extended double-precision floating-point format. The\n", "prefixes": [ "62/72" ] }