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{
    "id": 25923,
    "url": "https://patchwork.libcamera.org/api/patches/25923/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/25923/",
    "project": {
        "id": 1,
        "url": "https://patchwork.libcamera.org/api/projects/1/?format=api",
        "name": "libcamera",
        "link_name": "libcamera",
        "list_id": "libcamera_core",
        "list_email": "libcamera-devel@lists.libcamera.org",
        "web_url": "",
        "scm_url": "",
        "webscm_url": ""
    },
    "msgid": "<20260121173737.376113-17-kieran.bingham@ideasonboard.com>",
    "date": "2026-01-21T17:37:35",
    "name": "[v6,16/16] ipa: libipa: fixedpoint: Remove unsigned workaround",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "382aaa9077871e463411ce7f41b2395c1f586340",
    "submitter": {
        "id": 4,
        "url": "https://patchwork.libcamera.org/api/people/4/?format=api",
        "name": "Kieran Bingham",
        "email": "kieran.bingham@ideasonboard.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/25923/mbox/",
    "series": [
        {
            "id": 5730,
            "url": "https://patchwork.libcamera.org/api/series/5730/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5730",
            "date": "2026-01-21T17:37:19",
            "name": "libipa: Introduce a Quantized type",
            "version": 6,
            "mbox": "https://patchwork.libcamera.org/series/5730/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/25923/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/25923/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>",
        "X-Original-To": "parsemail@patchwork.libcamera.org",
        "Delivered-To": "parsemail@patchwork.libcamera.org",
        "Received": [
            "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id F2D06C32E7\n\tfor <parsemail@patchwork.libcamera.org>;\n\tWed, 21 Jan 2026 17:38:04 +0000 (UTC)",
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        ],
        "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"jBerSPxV\"; dkim-atps=neutral",
        "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1769017034;\n\tbh=CKVkopKkamAgigI5a3RtF96o/5VhLIlo77pMT7BToMc=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=jBerSPxVhKij2qz5fnJQGIlhWuhK5GGdyRYUQ94jXv/ssdKkhwwFArlhg0ELtq0FV\n\tfx8xkRv5CNaagzcmfG0arxA2pAQpWSeDNHWD0r10ZviRhiH3gJqZMHmsu5qd6NBM3L\n\tGJaSDriQ7zyp8MN5rV5Q7yEk+mE39v48bGBftgEk=",
        "From": "Kieran Bingham <kieran.bingham@ideasonboard.com>",
        "To": "libcamera devel <libcamera-devel@lists.libcamera.org>",
        "Cc": "Kieran Bingham <kieran.bingham@ideasonboard.com>, =?utf-8?q?Barnab?=\n\t=?utf-8?b?w6FzIFDFkWN6ZQ==?= <barnabas.pocze@ideasonboard.com>",
        "Subject": "[PATCH v6 16/16] ipa: libipa: fixedpoint: Remove unsigned workaround",
        "Date": "Wed, 21 Jan 2026 17:37:35 +0000",
        "Message-ID": "<20260121173737.376113-17-kieran.bingham@ideasonboard.com>",
        "X-Mailer": "git-send-email 2.52.0",
        "In-Reply-To": "<20260121173737.376113-1-kieran.bingham@ideasonboard.com>",
        "References": "<20260121173737.376113-1-kieran.bingham@ideasonboard.com>",
        "MIME-Version": "1.0",
        "Content-Type": "text/plain; charset=UTF-8",
        "Content-Transfer-Encoding": "8bit",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "<libcamera-devel.lists.libcamera.org>",
        "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>",
        "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>",
        "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>",
        "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>",
        "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>",
        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "Now that we no longer attempt or allow storing signed negative floats\nas an unsigned integer representation, remove the workaround which\nrequired an intermediate cast when converting floats to fixed point values.\n\nReviewed-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>\nSigned-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>\n---\n src/ipa/libipa/fixedpoint.h | 7 +------\n 1 file changed, 1 insertion(+), 6 deletions(-)",
    "diff": "diff --git a/src/ipa/libipa/fixedpoint.h b/src/ipa/libipa/fixedpoint.h\nindex 1a871bc554ef..b7dbb00cadaa 100644\n--- a/src/ipa/libipa/fixedpoint.h\n+++ b/src/ipa/libipa/fixedpoint.h\n@@ -75,12 +75,7 @@ public:\n \t{\n \t\tv = std::clamp(v, min, max);\n \n-\t\t/*\n-\t\t * The intermediate cast to int is needed on arm platforms to\n-\t\t * properly cast negative values. See\n-\t\t * https://embeddeduse.com/2013/08/25/casting-a-negative-float-to-an-unsigned-int/\n-\t\t */\n-\t\treturn static_cast<T>(static_cast<int>(std::round(v * (1 << F)))) & bitMask;\n+\t\treturn static_cast<T>(std::round(v * (1 << F))) & bitMask;\n \t}\n };\n \n",
    "prefixes": [
        "v6",
        "16/16"
    ]
}