From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mail-it0-f47.google.com ([209.85.214.47]) by ewsd; Fri Apr  6 23:26:18 EDT 2018
Received: by mail-it0-f47.google.com with SMTP id r19-v6so4471414itc.0
        for <9front@9front.org>; Fri, 06 Apr 2018 20:26:15 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20161025;
        h=mime-version:in-reply-to:references:from:date:message-id:subject:to;
        bh=jgobwTYXOfv8+MrZp0b8LF4/VMI6hAMGU/QDbJrcsLQ=;
        b=NYsGOFAzqfxoPFyOU6Ue65ZllWG/zkwpFMOwH9EsxfCH+jw5rZrGtEBZeN2Tc4sO7m
         gWUB0elCHuPAiVlEBmJH8uwX3nrepTnBdOr3L85G6Baby/tHWTx54Zunio6IBb7IOwgl
         9dqIoAKnTXRMMOv20bDQzpAIHCsLpPaIs7VI7GHY6TXAjheUIKQisFjPYw1E6XJrzDiv
         4t7jhJubn68V1067J15K9wsaLaBxQupxl0qo51xOIiLVFa48ygv0eNMHj71XcGxdda17
         nY8klKJSCEODKxP2oR+mZHRSfliAm9sxESlZ/zwDxDXV8836sOAzlFH+5sRQWu5Zs+BT
         oh6Q==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20161025;
        h=x-gm-message-state:mime-version:in-reply-to:references:from:date
         :message-id:subject:to;
        bh=jgobwTYXOfv8+MrZp0b8LF4/VMI6hAMGU/QDbJrcsLQ=;
        b=pS/NZUuiTwDGiiszAoAAqjMziJIzM/m2QfTpWvGnzy/u6ES6F2/awayHJjssOytyN/
         mYMIl3vH+RIVWsqkJAL0Vwb49eqWSFV7ntXTnBW1VhCXaZ8/OFuA51YrBSVTOiCFHPUg
         6gBBtrfuePWGQRbDlb8UQ2MtqBwo/BlO3AKBrFkkErfowVs4HAEqD9vjqu1RceqRdacY
         /Yu2BEM5c2qQpTnlZ1v4CQPcyVHehDhd8hnACM1KWzyW1Ry0/ieDqLbOIbamGctjnsCc
         kMS5gCtbXXEGZvPPz1OuovWd2jm36R8odpQwLfG/cD14jDwXumjRI0cQ3qrSMLYPHzQG
         O0Hw==
X-Gm-Message-State: AElRT7GQtyALdJNd2V2vJ6QxRs1nKOj5kdJTuJyrXZ55lCd78+hjTMvG
	1t+KDb/EglggrTxZ1BhbWzt3d0xmnwQQlg6Dmyg=
X-Google-Smtp-Source: AIpwx4/yexa1kpnhM2KkKS+i4MYAkPbvMNNS4ncTAM7isKe+7m+gb0jhF3Mi/FLcyU0lM3bYjoIH3PUpI8PKHYtecAU=
X-Received: by 2002:a24:b34e:: with SMTP id z14-v6mr22459988iti.31.1523071573860;
 Fri, 06 Apr 2018 20:26:13 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.107.1.80 with HTTP; Fri, 6 Apr 2018 20:26:13 -0700 (PDT)
In-Reply-To: <CAFSF3XPj4=8zQ_+ucXyLFZav0wCLq3XSP+mxn=scpMte2-hGiA@mail.gmail.com>
References: <07B3CEBF44DEFBE3008080B72A0B639A@felloff.net> <CABqy+sq94Jf8PmONhguYpu5PGA3=fOWyXSPcZjEARkQnfh72yg@mail.gmail.com>
 <CAFSF3XPj4=8zQ_+ucXyLFZav0wCLq3XSP+mxn=scpMte2-hGiA@mail.gmail.com>
From: Robert Ransom <rransom.8774@gmail.com>
Date: Fri, 6 Apr 2018 23:26:13 -0400
Message-ID: <CABqy+sqdAsmGJG54TC2qBaMd2YvOoMJrBiVBONTbz+NWy3nK2Q@mail.gmail.com>
Subject: Re: [9front] memfillpoly
To: 9front@9front.org
Content-Type: text/plain; charset="UTF-8"
List-ID: <9front.9front.org>
List-Help: <http://lists.9front.org>
X-Glyph: ➈
X-Bullshit: extended scale-out lifecycle-oriented full-stack reduce/map control 

On 4/5/18, hiro <23hiro@gmail.com> wrote:
> have you done any performance tests, or why are you contemplating
> these kinds of optimizations?

The current implementation is broken in at least one way, and the
floating-point implementation would be much simpler.

Turns out I may have been wrong about it being faster; the current
implementation does perform the div/mod instructions only a few times
per segment.