From: Jay Belanger <jay.p.belanger@gmail.com>
To: "Roland Winkler" <winkler@gnu.org>
Cc: 10554@debbugs.gnu.org
Subject: bug#10554: 24.0.92; No units specified (dimensionless quantities in Emacs Calc)
Date: Sat, 21 Jan 2012 09:42:55 -0600 [thread overview]
Message-ID: <87mx9hukn4.fsf@gmail.com> (raw)
In-Reply-To: <20250.33882.89017.12372@gargle.gargle.HOWL> (Roland Winkler's message of "Sat, 21 Jan 2012 03:24:42 -0600")
> We can define a trivial unit
>
> (add-to-list 'math-additional-units '(one "1" "One"))
>
> So every plain, dimensionless number in Calc can be converted to
> ones. "7" becomes "7 one",
This will automatically be done when "exact output units" option is
chosen.
> Calc should interpret dimensionless numbers such as "7" equivalent
> to "7 one" without the need to explicitly make this trivial
> conversion in either direction.
...
> - If Calc finds a dimensionless number "7" on the stack, for unit
> conversions it gets interpreted as "7 one"
This would break current convert-units behavior, where a dimensionless
number can be interpreted by the user as any unit. This is why when the
user asks to convert a plain number, Calc asks for the old units. Calc
was written that way on purpose, and is a feature of Calc's units
handling.
next prev parent reply other threads:[~2012-01-21 15:42 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-19 5:24 bug#10554: 24.0.92; No units specified (dimensionless quantities in Emacs Calc) Roland Winkler
2012-01-19 21:45 ` Jay Belanger
2012-01-19 22:33 ` Roland Winkler
2012-01-20 4:53 ` Jay Belanger
2012-01-20 8:34 ` Roland Winkler
2012-01-20 16:48 ` Jay Belanger
2012-01-20 17:55 ` Roland Winkler
2012-01-20 19:10 ` Jay Belanger
2012-01-20 20:30 ` Roland Winkler
2012-01-20 20:54 ` Jay Belanger
2012-01-20 22:10 ` Roland Winkler
2012-01-21 0:00 ` Jay Belanger
2012-01-21 9:24 ` Roland Winkler
2012-01-21 14:45 ` Jay Belanger
2012-01-21 15:12 ` Roland Winkler
2012-01-21 15:28 ` Jay Belanger
2012-01-21 15:42 ` Jay Belanger [this message]
2012-01-21 16:03 ` Roland Winkler
2012-01-20 20:36 ` Roland Winkler
2012-01-21 4:21 ` Jay Belanger
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