From: krewat at kilonet.net (Arthur Krewat)
Subject: [COFF] Fwd: Old and Tradition was [TUHS] V9 shell
Date: Sun, 16 Feb 2020 17:45:58 -0500 [thread overview]
Message-ID: <a1c4d68b-3d40-9531-35af-9e7e74730f80@kilonet.net> (raw)
In-Reply-To: <CAC20D2NSQG5cA1sdmxjkcVcp_WFNhDjHRYaKNLOW1=4Hr=tZ=w@mail.gmail.com>
On 2/16/2020 5:10 PM, Clem Cole wrote:
> This was how I (and many others) learn about interpolation
I learned about interpolation in either middle school or high school
math. And used it many times in video games I had my hands in. I was a
year or two ahead (depending on which year) in math.
Create an array (or a cache at startup) with all the logs I needed, and
then interpolate on the fly. And do the reverse for the alog().
Quite handy.
As for slide-rules, I remember my father had one, and used it regularly.
I never even looked at it. He died when I was 16. A few years later, I
took it out of it's case, looked at it, and thought "ah! logs". I had
never known what a slide-rule was. And I was born in 1965 ;) They
certainly didn't teach us about slide rules in school.
ak
PS: Take the log of a number, divide by two, take the alog() and get the
sqrt(). Divide by 3, cube root, etc. I was impressed, to say the least.
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next prev parent reply other threads:[~2020-02-16 22:45 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-11 18:41 [COFF] " clemc
[not found] ` <CAP2nic2C4-m_Epcx7rbW2ssbS850ZFiLKiL+hg1Wxbcwoaa1vQ@mail.gmail.com>
2020-02-12 0:57 ` [COFF] Fwd: " athornton
2020-02-12 1:58 ` clemc
2020-02-12 3:01 ` lm
2020-02-12 18:12 ` clemc
2020-02-12 21:55 ` cym224
2020-02-12 22:11 ` imp
2020-02-12 22:45 ` sauer
2020-02-12 23:05 ` lm
2020-02-12 23:54 ` [COFF] floating point (Re: " bakul
2020-02-12 23:56 ` bakul
2020-02-13 1:21 ` toby
2020-02-13 6:57 ` [COFF] Fwd: " peter
2020-02-16 21:47 ` wobblygong
2020-02-16 22:10 ` clemc
2020-02-16 22:45 ` krewat [this message]
2020-02-16 23:50 ` bakul
2020-02-18 0:17 ` dave
2020-02-18 12:48 ` jpl.jpl
2020-02-24 9:40 ` ik
2020-02-24 15:19 ` lm
[not found] ` <CAP2nic0fK+=eh=5MuY4BJH6zx4tCRMWcazmm1khYMzNmEdf8ug@mail.gmail.com>
2020-02-24 16:15 ` [COFF] [TUHS] Fwd: Old and Tradition was " clemc
2020-02-24 16:19 ` clemc
2020-02-24 16:27 ` [COFF] Fwd: Old and Tradition was [TUHS] " clemc
2020-02-12 16:28 jnc
2020-02-12 18:13 ` clemc
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