From patchwork Mon Jan 1 19:38:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Sabatini X-Patchwork-Id: 45448 Delivered-To: ffmpegpatchwork2@gmail.com Received: by 2002:a05:6a20:6623:b0:194:e134:edd4 with SMTP id n35csp6363811pzh; Mon, 1 Jan 2024 11:39:23 -0800 (PST) X-Google-Smtp-Source: AGHT+IFUnPo/iHXgudNq1Il0iKshkPJYQho2p1dU9BeGfybeC2brkbPJeVrCJjrJkAyyvcok0CnQ X-Received: by 2002:a17:906:1090:b0:a26:8700:16b0 with SMTP id u16-20020a170906109000b00a26870016b0mr4576497eju.98.1704137963235; Mon, 01 Jan 2024 11:39:23 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1704137963; cv=none; d=google.com; s=arc-20160816; b=pWT++gtimYJy1EJHhaPZPP4FVp+t52OoGXKMjS30yD1LKCq5fDwZulwsDJATu92GHz akgHQ8RZWuGXpzieWU1RRjODSV8U8nvC3ooaF/DSQyV5BgZcLH0w6Qo3sld+nYifNTna 6eppootapVYx/JN1AhagP35L6HlzZ/pd349MN8cGWG/R3SmTswLbK/lzbkpecCNhAmL7 xymZne/AME8S8q1ORxXa2Jnez4yrhSuf7oXn0xh+iZKRnAgWOTZvEigBWv2gw5NSJlTn P+t4nXKLeL6ff7Pah9I9xSNZdHb9yR+3PaSjp38AIw9Ka9LUAZUTcqzgKX/gbo3Lp5Mv jvpQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:cc:reply-to :list-subscribe:list-help:list-post:list-archive:list-unsubscribe :list-id:precedence:subject:mime-version:message-id:date:to:from :dkim-signature:delivered-to; bh=j+FCLB6WMOHGnZ66m/SN+U1tQkv2VbttsBSr1jE1nE4=; fh=QdWxt2OToL83TTnLQn0lGhLakV7i1QyAJdC8te7qN0E=; b=lYqeK5v9Asx5bepnb5aeW5FAWQmSHpgPaaN/4kvJtsknbTCUunOpyjnewnsdKNeG2n yJKqoDnZgoiXyzGNyrPA6fhoxXaBuPODbTTUev3qTvOQ/fgSi7dSp3VlS5KY1Qbvhtgx +x/Any0dLzwTGYBFKNr2SqRvk++7mZUk7ALwGty/P5Tb2BNH982yIRSf2V3Q6uPqrDIs ARZMSpzfUvGP99OLZc9uLdHOxU/NRCdVhn1c6LSpRCMDke9ufQj3Ph4MhZaQuhp7YshM IcQ6qmIgc2cES426hw+rG0neeAxcoxSN0q5oOBj6+kwUyV2FvGWIz1p8MQEgD14/Z4Pa HDiQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20230601 header.b=DoIFx7gy; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id ez3-20020a1709070bc300b00a26d8457992si7163989ejc.716.2024.01.01.11.39.22; Mon, 01 Jan 2024 11:39:23 -0800 (PST) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20230601 header.b=DoIFx7gy; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 6F3F768CE37; Mon, 1 Jan 2024 21:39:10 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-wr1-f47.google.com (mail-wr1-f47.google.com [209.85.221.47]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 6CBE568AB8E for ; Mon, 1 Jan 2024 21:39:03 +0200 (EET) Received: by mail-wr1-f47.google.com with SMTP id ffacd0b85a97d-3373a30af67so1336195f8f.0 for ; Mon, 01 Jan 2024 11:39:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1704137941; x=1704742741; darn=ffmpeg.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=iLTeFE60mS0jC6CHPu1UYfe5293JxPaCVacHOpxux9k=; b=DoIFx7gyKFkGpK28rHg6K2VWBzGez1nOEbc7w/EoawTIOdXp5Pkhw2tbp2syegBFAv f6cBHvtv6bJU64EhVKKAM9ovR6FUKji0rD7EEkJ20FFaCNeTWtfkBb07kQDRN+PDEP8+ 53grVs2CMpzLf9gUfQhfC7vlRsFbVTK739pXO6wqBrAQ2wLFriAXd8hwtUXb7UZiKsOr 5zxdma6nprtWOyVcWal+zhuYK7Vfk7K7myDGvWNNiz5Dd7fFUPumftl28WKfY5dueVPY k14lfYkwnKZhE6SZ+Kle9rM7102PhptmtplojHb8d7+/v4fcU35GI3pfL+ICBaB/OgOu b4jQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704137941; x=1704742741; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=iLTeFE60mS0jC6CHPu1UYfe5293JxPaCVacHOpxux9k=; b=iza0rjvzw6Neqaj8W+lM2HkjPdLxHeqDXWZzi2hTPSf9S7xW+kItcrUierd8ccFUzX nNXMvkFBaB4dsWEReAT7Q+1wXw8WTm5WM3OAxovAbw4Idsi2bqV46iFElVmHZINVXCNb 2GrE+UthRguQEeyzRE85DxSzLWlLjxmnjdnLpwwg15iT+k9sSZ1cZwpelyMBGRxcuzY8 KTVhlSz0TQ0lmb2N9JeAU/cU1FbpkK6jjXtvNbE6TTOOFI2+G0qUBgHweqQPP8oQ8oSi a3UNB5rURYLRiAF+BXbJZB+Orl7jhn708Pu6pmdgJ4TQCTvYPrbUCCtST+oS2Mh+DxLw IWlw== X-Gm-Message-State: AOJu0YzF2yJ0MXczpg9iPSyNHqPDOa2pnExb9e++r25kD9HpxF4WbZQk SwHSt9OOMTeSxBlQE+DgLsiO8sBUDZQ= X-Received: by 2002:a5d:6943:0:b0:336:c3c7:75eb with SMTP id r3-20020a5d6943000000b00336c3c775ebmr4249171wrw.31.1704137940803; Mon, 01 Jan 2024 11:39:00 -0800 (PST) Received: from mariano (dynamic-adsl-84-220-189-10.clienti.tiscali.it. [84.220.189.10]) by smtp.gmail.com with ESMTPSA id f11-20020a056402004b00b005557bbb81bfsm6294003edu.79.2024.01.01.11.39.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Jan 2024 11:39:00 -0800 (PST) Received: by mariano (Postfix, from userid 1000) id 3AD15BFCDC; Mon, 1 Jan 2024 20:38:59 +0100 (CET) From: Stefano Sabatini To: FFmpeg development discussions and patches Date: Mon, 1 Jan 2024 20:38:58 +0100 Message-Id: <20240101193859.1038078-1-stefasab@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 1/2] libavutil/eval: introduce UINT64_MAX constant X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Stefano Sabatini Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: wRupORKJtiQx This might be useful, e.g. when setting the random seed expressed as a uint64_t. --- doc/utils.texi | 3 +++ libavutil/eval.c | 1 + 2 files changed, 4 insertions(+) diff --git a/doc/utils.texi b/doc/utils.texi index 0c4f146f4f..ac9b63826e 100644 --- a/doc/utils.texi +++ b/doc/utils.texi @@ -1030,6 +1030,9 @@ area of the unit disc, approximately 3.14 exp(1) (Euler's number), approximately 2.718 @item PHI golden ratio (1+sqrt(5))/2, approximately 1.618 +@item UINT64_MAX +maximum value expressed as an unsigned integer, corresponds to +18446744073709551616 ((2^64)-1) @end table Assuming that an expression is considered "true" if it has a non-zero diff --git a/libavutil/eval.c b/libavutil/eval.c index dc6b3697bc..93048bff91 100644 --- a/libavutil/eval.c +++ b/libavutil/eval.c @@ -100,6 +100,7 @@ static const struct { { "PI", M_PI }, { "PHI", M_PHI }, { "QP2LAMBDA", FF_QP2LAMBDA }, + { "UINT64_MAX", UINT64_MAX } }; double av_strtod(const char *numstr, char **tail) From patchwork Mon Jan 1 19:38:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Sabatini X-Patchwork-Id: 45447 Delivered-To: ffmpegpatchwork2@gmail.com Received: by 2002:a05:6a20:6623:b0:194:e134:edd4 with SMTP id n35csp6363770pzh; Mon, 1 Jan 2024 11:39:13 -0800 (PST) X-Google-Smtp-Source: AGHT+IF2SqA65BT8y+m8cvzlbumVCCfUI5N1tYkqupPbuEbGwfWZrXt6ZDERoTNSWUdcDlvdpVrf X-Received: by 2002:aa7:d9d0:0:b0:556:6fa5:8d0f with SMTP id v16-20020aa7d9d0000000b005566fa58d0fmr1201867eds.2.1704137953527; Mon, 01 Jan 2024 11:39:13 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1704137953; cv=none; d=google.com; s=arc-20160816; b=qocWes0YcCAryqMw/kVVk/R97ReE8wXAEe4qEK33G2mnwnhcx23oAKL5ltCeTrTt5w ImlG3jsweh6aTAm++izJUog05OHmgFarko/pQpA3Y36Sxlb+56gh62ELzN+8XgrgNZQ8 d4g1Zl3AUR9XaKIAW79AVFOEy1Fymy4qPyMZnk+WrquTRpcjcShuzf67Wx0lXaEEcDK1 rFi5T0eQFVcUh08AdBUv5TnqN8u2b4wSfqxkMRse0aFQ5Dr9VpvJEMfGeWgCQrjWyZl7 g35p1vPvcahiCaJlGW3CFsdTfRk1UraeXhu+ydlFre4CQ6ZDO4uXgVr08z4IXfaExexE P5Pw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:cc:reply-to :list-subscribe:list-help:list-post:list-archive:list-unsubscribe :list-id:precedence:subject:mime-version:references:in-reply-to :message-id:date:to:from:dkim-signature:delivered-to; bh=wZf22yrKVUXy50t+xDoMFTckRBwbkdAcc2f574mk1Yo=; fh=QdWxt2OToL83TTnLQn0lGhLakV7i1QyAJdC8te7qN0E=; b=PcusgVlMUkCreY2low2I1mUUGIKx+oTCTStnupz+H9+/A64HgD5H9D0e+MmR5lqBdT DZ/+CGhprvov0G0D8pCFoozoozGD2/RLtWDSn4zJpok+NyKEhd8Fyu/8yrZSJmoXgkoU v91So0TeMILQW8NaxBzG5dEyC5Awru9FXLaodRSZKbV8UoOXE2jpyboe08k9qOB0V4pL TAFxvz/4XMBnXW2S9DeKLtZ+22iPU+/DoVm7vxvIH8s+96Gi1OnYzKaUVBwOk1S6l0S6 XL56QgL9qtj0t11W4nMB26uof1a+Qo870OU+hbdK1fpcanJ8VOThefK72XULEiZy94yl xxXQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20230601 header.b=VxEPckdN; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id cq4-20020a056402220400b005548f94a2e5si8284854edb.264.2024.01.01.11.39.13; Mon, 01 Jan 2024 11:39:13 -0800 (PST) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20230601 header.b=VxEPckdN; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 4A2BE68CE31; Mon, 1 Jan 2024 21:39:09 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-ed1-f49.google.com (mail-ed1-f49.google.com [209.85.208.49]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 9A95668AB8E for ; Mon, 1 Jan 2024 21:39:02 +0200 (EET) Received: by mail-ed1-f49.google.com with SMTP id 4fb4d7f45d1cf-55651a3df8fso1134923a12.1 for ; Mon, 01 Jan 2024 11:39:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1704137941; x=1704742741; darn=ffmpeg.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=tLojdRuu7A1FXJuNquBAaGkLwS+Zvgq+VvfySAYIjac=; b=VxEPckdNc/OPRZIGNUQ/INU+ThxhDu52Tr/FldDxWGDw553I82KXTNxxpWCwzi8ed3 dSilsONbLs+Vvy+Udu6hdoXMEfEhTpAgHcnLWFYO+sRebTszVXHSioG+QtQTdhg6r96u lUFKQm62c27tX21VyB3sfS4vJiPQzruJi/n8A80l2ruN5e51htTAgg5xzz4f+d71wPbp gRDIuOp3aaxiL81mLF4zJxHkSAtIvV4mpYpL9JksRREkrkf2FqTy3U9CcOU9s/MOkLEP qKNU/r9m+keixsfHe5omn9rLoFVMtmvlotS0bNVe8kxGc5EyoBliZaG/DSfyCz1OBNM1 agXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704137941; x=1704742741; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=tLojdRuu7A1FXJuNquBAaGkLwS+Zvgq+VvfySAYIjac=; b=PX7AZMYH4nGXA+L7bYuWTcYYdD2oxAto3nFe5O8DrEtUie2to1WZ2X1qgIjls8ipfy N+cPmLsZfQEPq5K4YSVUoNVgElzIWWXSJRNPM+0IL1yp1ipSpZtvnWV7Pnp016+62Gir FC+7HpIxsJnAw/Ybfjft+dmSmoJJs/okXomA2kRVqI726UaQh8oxFkX8a333G8gFJguM C04r50vSy7/VSnsAfLKXAC+3I8IIc9pepQBoFBKabzaqC0D0Zc1GmnaW82zvGIdPaY4i YdMT1ATbDjFp4CEjtjvvzmeWZUbW7RvIW84n77AgG/MeW58MmMNZJ0g7nMbcmd1uRU7x gupg== X-Gm-Message-State: AOJu0YwQEogHa6hxy6T1b52hwYHPxDyr3ZhZ/wlIq1lqJaxP2LENBJnC OdkX+DBk7wXzHJ6/cI/h8LFg0tIXLSw= X-Received: by 2002:a05:6402:206c:b0:554:448d:c4a5 with SMTP id bd12-20020a056402206c00b00554448dc4a5mr12946836edb.13.1704137940958; Mon, 01 Jan 2024 11:39:00 -0800 (PST) Received: from mariano (dynamic-adsl-84-220-189-10.clienti.tiscali.it. [84.220.189.10]) by smtp.gmail.com with ESMTPSA id b7-20020a056402138700b00555fd008741sm3407684edv.95.2024.01.01.11.39.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Jan 2024 11:39:00 -0800 (PST) Received: by mariano (Postfix, from userid 1000) id 3E177BFCDA; Mon, 1 Jan 2024 20:38:59 +0100 (CET) From: Stefano Sabatini To: FFmpeg development discussions and patches Date: Mon, 1 Jan 2024 20:38:59 +0100 Message-Id: <20240101193859.1038078-2-stefasab@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240101193859.1038078-1-stefasab@gmail.com> References: <20240101193859.1038078-1-stefasab@gmail.com> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 2/2] doc/utils/eval: clarify meaning of random* seed value X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Stefano Sabatini Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: agyUoWmUi4xE Possible address trac issue: http://trac.ffmpeg.org/ticket/10763 --- doc/utils.texi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/doc/utils.texi b/doc/utils.texi index ac9b63826e..554a07f057 100644 --- a/doc/utils.texi +++ b/doc/utils.texi @@ -944,11 +944,17 @@ Return a pseudo random value between 0.0 and 1.0. @var{idx} is the index of the internal variable which will be used to save the seed/state. +The seed is represented as 64-bit unsigned integer. You can use a +fraction of @code{UINT64_MAX} to initialize it. + @item randomi(idx, min, max) Return a pseudo random value in the interval between @var{min} and @var{max}. @var{idx} is the index of the internal variable which will be used to save the seed/state. +The seed is represented as 64-bit unsigned integer. You can use a +fraction of @code{UINT64_MAX} to initialize it. + @item root(expr, max) Find an input value for which the function represented by @var{expr} with argument @var{ld(0)} is 0 in the interval 0..@var{max}.