Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/patches/2227673/?format=api
{ "id": 2227673, "url": "http://patchwork.ozlabs.org/api/patches/2227673/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260424043014.46305-21-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": "<20260424043014.46305-21-richard.henderson@linaro.org>", "list_archive_url": null, "date": "2026-04-24T04:29:54", "name": "[v2,20/40] fpu: Add conversions between float16 and float8 formats", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "21d5e60b091a9e1dcbfd3aa26955d6009c0a7552", "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/20260424043014.46305-21-richard.henderson@linaro.org/mbox/", "series": [ { "id": 501300, "url": "http://patchwork.ozlabs.org/api/series/501300/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501300", "date": "2026-04-24T04:29:37", "name": "target/arm: Implement FEAT_FP8", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/501300/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2227673/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2227673/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@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=EkJa14i6;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g20Sv4kqpz1yDD\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 24 Apr 2026 14:33:19 +1000 (AEST)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1wG8DE-0001P9-Jq; Fri, 24 Apr 2026 00:32:20 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.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 1wG8Ck-0007zC-70\n for qemu-devel@nongnu.org; Fri, 24 Apr 2026 00:31:50 -0400", "from mail-ot1-x330.google.com ([2607:f8b0:4864:20::330])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from <richard.henderson@linaro.org>)\n id 1wG8Ci-0002zH-8P\n for qemu-devel@nongnu.org; Fri, 24 Apr 2026 00:31:49 -0400", "by mail-ot1-x330.google.com with SMTP id\n 46e09a7af769-7dcc9b506d9so4232594a34.1\n for <qemu-devel@nongnu.org>; Thu, 23 Apr 2026 21:31:47 -0700 (PDT)", "from stoup.. ([172.58.183.19]) by smtp.gmail.com with ESMTPSA id\n 586e51a60fabf-42b9ac54ec5sm18880864fac.13.2026.04.23.21.31.44\n (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n Thu, 23 Apr 2026 21:31:46 -0700 (PDT)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=linaro.org; s=google; t=1777005107; x=1777609907; darn=nongnu.org;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:cc:to:from:from:to:cc:subject:date\n :message-id:reply-to;\n bh=3n7fQN+iJBwqx2ETIvTw92Xcf+8pXw422MS+4i6nNsM=;\n b=EkJa14i6pPUh2dl/Ka0LqHrkVMuN8yncHhPwRBqpm0sRccvpbS68HNgASK/GRKKt/a\n Z/UuZ+2oaH+4bJRad1a3sUFc6srbX3gmwg6DqCJBu2jUsJ5AT2vGovjZ99i6Y2cI8fAQ\n FK1v2qeW4uhqiSsOwj8GGMqowUC0jRNXAb9bl/QSS13DPx2dXubKp3UktgVSz13CIglt\n j2HOF2RmPjWYh6jotUqP8zfU4F5QScu2SWxVaFQRP04Tbcf0Pv7vIsiMwuNNoq+ew+WL\n S3k4KQBGI/sX+tR5+858FHaicvJetnWCkiNFql5SI4hw73wSGGuZBn+XUI7Z8rB5xExA\n MS9g==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20251104; t=1777005107; x=1777609907;\n h=content-transfer-encoding:mime-version:references:in-reply-to\n :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from\n :to:cc:subject:date:message-id:reply-to;\n bh=3n7fQN+iJBwqx2ETIvTw92Xcf+8pXw422MS+4i6nNsM=;\n b=h6n4jAigEd1MquDGRDfjJB96xksneXodIa9+ZA6n8h6Nf4lvpqog4PscnVHlSPs33W\n zdshFnnXvzVQ7mzCI7HNdSyJrUS8kW4dsAZ3RI7F4oYPzEkXoUa1zJ1dOlR+rdh+oUfs\n x34FomL3JN2GsnhIctR2qtZdOsrTb3NkyaEu46MGAgFGXvg9Own9An2AqzdZs3PyhGR5\n 0zcD2xbOWf0aJhXlXhiiKFNCNl2eAG3qbbOjBqaDQOfUesF092jlIREkDoLKcY8aVUDE\n RGvMgEkj7WzpB5tghAMmocwnDHPmWQFqEw0Ik3PwpAomX5dtazz86zghB6mrXbxI+FJY\n 29HA==", "X-Gm-Message-State": "AOJu0YxJeRIEsvxsfRrFOGxiVB2kenmrjon58HaLkSsTretRGzJGs+gP\n /nQXWAtKI3e3Fut+kSaHkw/csRWbdFJARz0IVGK3bUoNFwcWDAPlW/W4ATXsWfwamvbVYCLMJ0z\n tQRVu17M=", "X-Gm-Gg": "AeBDiesOyKpWOnXjtyTxQTgxFqVNAmocLtR9tQxgxHAKq64GfITpxfF1n0B3DVBfeEM\n 21aC8aJ6fWGhreMtwTPn5g4M23D1JF6xxJKH1U+QnfMkZYU0QOvyY8JzmkG4QyXl0VO2UHWjqGQ\n r62my7ufSDQaFA7fDGT49Hkl1DEtjYNQlTfAWYP5ZHt5z2Q+dXuviIby+xN8vxWXul8K53Q8oMA\n ZD/wKcdTfNwpMA7YeXnuoW/ldtZGYUMNxALskPqisshNjZkBS8PWtawyV/6fkLP5cuwPnNAiDQV\n OI5D13Kz5tpBnhfAXuL4DgQw+9cu1kKXukBrTkiFAMITqtAHHIoLOhaq/PZpBt+pUzCUcSGvuu/\n oQHfJ37hxGDJFNaShn9QZA+JhcfRvHv0fq9ECs016zebFe9GnNiwSXqeZIKhbUKBJ8EBmm6v7wG\n HDWI4YJAilr5C5mkNP54EoUlhu/gTRTQQ54/Uv3XB3wxzV5ov7WpbkdxZfuaIFR2H3VbQM3wbJ", "X-Received": "by 2002:a05:6830:82cd:b0:7dc:d0e3:5bc1 with SMTP id\n 46e09a7af769-7dcd0e371efmr10508695a34.13.1777005106722;\n Thu, 23 Apr 2026 21:31:46 -0700 (PDT)", "From": "Richard Henderson <richard.henderson@linaro.org>", "To": "qemu-devel@nongnu.org", "Cc": "qemu-arm@nongnu.org", "Subject": "[PATCH v2 20/40] fpu: Add conversions between float16 and float8\n formats", "Date": "Fri, 24 Apr 2026 14:29:54 +1000", "Message-ID": "<20260424043014.46305-21-richard.henderson@linaro.org>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260424043014.46305-1-richard.henderson@linaro.org>", "References": "<20260424043014.46305-1-richard.henderson@linaro.org>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2607:f8b0:4864:20::330;\n envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x330.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": "2.1.29", "Precedence": "list", "List-Id": "qemu development <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>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "Signed-off-by: Richard Henderson <richard.henderson@linaro.org>\n---\n include/fpu/softfloat.h | 8 +++++++-\n fpu/softfloat.c | 38 ++++++++++++++++++++++++++++++++++++++\n 2 files changed, 45 insertions(+), 1 deletion(-)", "diff": "diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h\nindex 6f86848b7e..70e25fa811 100644\n--- a/include/fpu/softfloat.h\n+++ b/include/fpu/softfloat.h\n@@ -196,16 +196,22 @@ float128 uint128_to_float128(Int128, float_status *status);\n float8_e4m3 float4_e2m1_to_float8_e4m3(float4_e2m1, float_status *status);\n \n bfloat16 float8_e4m3_to_bfloat16(float8_e4m3, int scale, float_status *status);\n+float16 float8_e4m3_to_float16(float8_e4m3, int scale, float_status *status);\n float8_e4m3 bfloat16_to_float8_e4m3(bfloat16, int scale,\n bool sat, float_status *status);\n+float8_e4m3 float16_to_float8_e4m3(float16, int scale,\n+ bool sat, float_status *status);\n float8_e4m3 float32_to_float8_e4m3(float32, int scale,\n bool sat, float_status *status);\n \n bfloat16 float8_e5m2_to_bfloat16(float8_e5m2, int scale, float_status *status);\n+float16 float8_e5m2_to_float16(float8_e5m2, int scale, float_status *status);\n float8_e5m2 bfloat16_to_float8_e5m2(bfloat16, int scale,\n bool sat, float_status *status);\n+float8_e5m2 float16_to_float8_e5m2(float16, int scale,\n+ bool sat, float_status *status);\n float8_e5m2 float32_to_float8_e5m2(float32, int scale,\n- bool sat, float_status *status);\n+ bool sat, float_status *status);\n \n /*----------------------------------------------------------------------------\n | Software half-precision conversion routines.\ndiff --git a/fpu/softfloat.c b/fpu/softfloat.c\nindex bcec7d38c8..013b6e1ee2 100644\n--- a/fpu/softfloat.c\n+++ b/fpu/softfloat.c\n@@ -2958,6 +2958,15 @@ float8_e4m3 float4_e2m1_to_float8_e4m3(float4_e2m1 a, float_status *s)\n return float8_e4m3_round_pack_canonical(&p, s, false);\n }\n \n+float16 float8_e4m3_to_float16(float8_e4m3 a, int scale, float_status *s)\n+{\n+ FloatParts64 p;\n+\n+ float8_e4m3_unpack_canonical(&p, a, s);\n+ parts_scalbn(&p, scale, s);\n+ return float16_round_pack_canonical(&p, s);\n+}\n+\n bfloat16 float8_e4m3_to_bfloat16(float8_e4m3 a, int scale, float_status *s)\n {\n FloatParts64 p;\n@@ -2967,6 +2976,15 @@ bfloat16 float8_e4m3_to_bfloat16(float8_e4m3 a, int scale, float_status *s)\n return bfloat16_round_pack_canonical(&p, s);\n }\n \n+float16 float8_e5m2_to_float16(float8_e5m2 a, int scale, float_status *s)\n+{\n+ FloatParts64 p;\n+\n+ float8_e5m2_unpack_canonical(&p, a, s);\n+ parts_scalbn(&p, scale, s);\n+ return float16_round_pack_canonical(&p, s);\n+}\n+\n bfloat16 float8_e5m2_to_bfloat16(float8_e5m2 a, int scale, float_status *s)\n {\n FloatParts64 p;\n@@ -2976,6 +2994,26 @@ bfloat16 float8_e5m2_to_bfloat16(float8_e5m2 a, int scale, float_status *s)\n return bfloat16_round_pack_canonical(&p, s);\n }\n \n+float8_e4m3 float16_to_float8_e4m3(float16 a, int scale,\n+ bool saturate, float_status *s)\n+{\n+ FloatParts64 p;\n+\n+ float16_unpack_canonical(&p, a, s);\n+ parts_scalbn(&p, scale, s);\n+ return float8_e4m3_round_pack_canonical(&p, s, saturate);\n+}\n+\n+float8_e5m2 float16_to_float8_e5m2(float16 a, int scale,\n+ bool saturate, float_status *s)\n+{\n+ FloatParts64 p;\n+\n+ float16_unpack_canonical(&p, a, s);\n+ parts_float_to_e5m2(&p, s, scale, saturate);\n+ return float8_e5m2_round_pack_canonical(&p, s, saturate);\n+}\n+\n float32 float16_to_float32(float16 a, bool ieee, float_status *s)\n {\n const FloatFmt *fmt16 = ieee ? &float16_params : &float16_params_ahp;\n", "prefixes": [ "v2", "20/40" ] }