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From: Drew Adams <drew.adams@oracle.com>
To: Emanuel Berg <moasenwood@zoho.eu>, help-gnu-emacs@gnu.org
Subject: RE: bike shifting - output decimal in percent
Date: Sat, 18 May 2019 20:50:05 -0700 (PDT)	[thread overview]
Message-ID: <3b5af744-8dc6-42d0-9273-a8030e2b3443@default> (raw)
In-Reply-To: <86mujjrzw0.fsf@zoho.eu>

> How do I output a decimal float digit
> 0 <= x <= 1 into percent? ("A percentage?"
> Correct English?)
> 
> But I wonder if/why-not there is/isn't
> a built-in way to do it?

Use function `format'.  See `C-h f format' and
(elisp) `Formatting Strings'.

E.g.
(setq foo  0.314159265358979)

(format "%2.14g%%" (* 100.0 foo))
 => "31.459265358979%"

(format "%2.2g%%" (* 100.0 foo))
 => "31%"



  reply	other threads:[~2019-05-19  3:50 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-19  1:34 bike shifting - output decimal in percent Emanuel Berg
2019-05-19  3:50 ` Drew Adams [this message]
2019-05-19  3:57   ` Drew Adams
2019-05-19  4:09     ` Drew Adams
2019-05-19  7:05   ` Emanuel Berg
2019-05-19  7:35     ` Emanuel Berg
2019-05-19  7:53       ` Tomas Nordin
2019-05-19  8:02         ` Emanuel Berg
2019-05-19  8:15           ` Tomas Nordin
2019-05-19  8:26             ` Emanuel Berg
2019-05-19 14:26       ` Drew Adams
2019-05-19 14:15     ` Drew Adams

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