* bug#35608: 26.2; Calc temperature conversions
@ 2019-05-06 19:33 Harris, Bill
2019-05-06 21:19 ` Mauro Aranda
0 siblings, 1 reply; 5+ messages in thread
From: Harris, Bill @ 2019-05-06 19:33 UTC (permalink / raw)
To: 35608
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I started Emacs from Cygwin with
$ /cygdrive/c/emacs/emacs-26.2-x86_64/bin/runemacs.exe -Q
I typed C-x * * to start Calc.
I entered '10 degC' and then
u c degF
I got 18, not the expected 50.
From *Calc Trail*:
Emacs Calculator Trail
alg' 10 * degC
cvun 18. * degF
In GNU Emacs 26.2 (build 1, x86_64-w64-mingw32)
of 2019-04-13 built on CIRROCUMULUS
Repository revision: fd1b34bfba8f3f6298df47c8e10b61530426f749
Windowing system distributor 'Microsoft Corp.', version 10.0.17134
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Defining kbd macro...
C-x * (Type ? for a list of Calc options)
Welcome to the GNU Emacs Calculator! Press '?' or 'h' for help, 'q' to quit
Working...
Building units table...done
Quit [4 times]
Configured using:
'configure --without-dbus --host=x86_64-w64-mingw32
--without-compress-install 'CFLAGS=-O2 -static -g3''
Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND NOTIFY ACL GNUTLS LIBXML2 ZLIB
TOOLKIT_SCROLL_BARS THREADS LCMS2
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: cp1252
Major mode: Lisp Interaction
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
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file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Load-path shadows:
None found.
Features:
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eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel
dos-w32 ls-lisp disp-table term/w32-win w32-win w32-vars term/common-win
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korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite charscript charprop
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cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote threads w32notify w32
lcms2 multi-tty make-network-process emacs)
Memory information:
((conses 16 134957 10618)
(symbols 48 23863 1)
(miscs 40 39 130)
(strings 32 37413 1399)
(string-bytes 1 950048)
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^ permalink raw reply [flat|nested] 5+ messages in thread
* bug#35608: 26.2; Calc temperature conversions
2019-05-06 19:33 bug#35608: 26.2; Calc temperature conversions Harris, Bill
@ 2019-05-06 21:19 ` Mauro Aranda
2019-05-06 21:27 ` Harris, Bill
0 siblings, 1 reply; 5+ messages in thread
From: Mauro Aranda @ 2019-05-06 21:19 UTC (permalink / raw)
To: Harris, Bill; +Cc: 35608
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tags 35608 notabug
quit
"Harris, Bill" <wsharris@snopud.com> writes:
> I entered '10 degC' and then
> u c degF
> I got 18, not the expected 50.
Hello.
That's because ‘u c’ treats temperature units as relative, and not as
absolute. The result you got means that a change of 10 degrees Celsius
equals to a change of 18 degrees Fahrenheit.
You need to use ‘u t’ (calc-convert-temperature) to convert an absolute
temperature from one scale to another. With that command, you'll get
the expected 50 degF.
Best regards,
Mauro.
>
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^ permalink raw reply [flat|nested] 5+ messages in thread
* bug#35608: 26.2; Calc temperature conversions
2019-05-06 21:19 ` Mauro Aranda
@ 2019-05-06 21:27 ` Harris, Bill
2019-05-13 14:50 ` npostavs
0 siblings, 1 reply; 5+ messages in thread
From: Harris, Bill @ 2019-05-06 21:27 UTC (permalink / raw)
To: Mauro Aranda; +Cc: 35608@debbugs.gnu.org
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Thank you, Mauro. I thought it gave absolute temperatures in previous versions (26.1, for example), but I just checked on version 25.1, and it, too, does as you say.
Bill
From: Mauro Aranda <maurooaranda@gmail.com>
Sent: Monday, May 6, 2019 2:19 PM
To: Harris, Bill <wsharris@snopud.com>
Cc: 35608@debbugs.gnu.org
Subject: Re: bug#35608: 26.2; Calc temperature conversions
CAUTION: THIS EMAIL IS FROM AN EXTERNAL SENDER.
Do not click on links or open attachments if the sender is unknown or the email is suspect.
________________________________
tags 35608 notabug
quit
"Harris, Bill" <wsharris@snopud.com<mailto:wsharris@snopud.com>> writes:
> I entered '10 degC' and then
> u c degF
> I got 18, not the expected 50.
Hello.
That's because ‘u c’ treats temperature units as relative, and not as
absolute. The result you got means that a change of 10 degrees Celsius
equals to a change of 18 degrees Fahrenheit.
You need to use ‘u t’ (calc-convert-temperature) to convert an absolute
temperature from one scale to another. With that command, you'll get
the expected 50 degF.
Best regards,
Mauro.
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^ permalink raw reply [flat|nested] 5+ messages in thread
* bug#35608: 26.2; Calc temperature conversions
2019-05-06 21:27 ` Harris, Bill
@ 2019-05-13 14:50 ` npostavs
2019-05-13 14:52 ` Harris, Bill
0 siblings, 1 reply; 5+ messages in thread
From: npostavs @ 2019-05-13 14:50 UTC (permalink / raw)
To: Harris, Bill; +Cc: Mauro Aranda, 35608@debbugs.gnu.org
close 35608
quit
"Harris, Bill" <wsharris@snopud.com> writes:
> Thank you, Mauro. I thought it gave absolute temperatures in previous
> versions (26.1, for example), but I just checked on version 25.1, and
> it, too, does as you say.
Right, see also (info "(calc) Basic Operations on Units") or
<https://www.gnu.org/software/emacs/manual/html_node/calc/Basic-Operations-on-Units.html>,
which has exactly this example conversion:
The ‘u c’ command treats temperature units (like ‘degC’ and ‘K’) as
relative temperatures. For example, ‘u c’ converts ‘10 degC’ to ‘18
degF’: A change of 10 degrees Celsius corresponds to a change of 18
degrees Fahrenheit. To convert absolute temperatures, you can use the
‘u t’ (‘calc-convert-temperature’) command. The value on the stack must
be a simple units expression with units of temperature only. This
command would convert ‘10 degC’ to ‘50 degF’, the equivalent temperature
on the Fahrenheit scale.
^ permalink raw reply [flat|nested] 5+ messages in thread
* bug#35608: 26.2; Calc temperature conversions
2019-05-13 14:50 ` npostavs
@ 2019-05-13 14:52 ` Harris, Bill
0 siblings, 0 replies; 5+ messages in thread
From: Harris, Bill @ 2019-05-13 14:52 UTC (permalink / raw)
To: npostavs@gmail.com; +Cc: Mauro Aranda, 35608@debbugs.gnu.org
RTM, as they say. Thanks!
-----Original Message-----
From: npostavs@gmail.com <npostavs@gmail.com>
Sent: Monday, May 13, 2019 7:50 AM
To: Harris, Bill <wsharris@snopud.com>
Cc: Mauro Aranda <maurooaranda@gmail.com>; 35608@debbugs.gnu.org
Subject: Re: bug#35608: 26.2; Calc temperature conversions
CAUTION: THIS EMAIL IS FROM AN EXTERNAL SENDER.
Do not click on links or open attachments if the sender is unknown or the email is suspect.
________________________________
close 35608
quit
"Harris, Bill" <wsharris@snopud.com> writes:
> Thank you, Mauro. I thought it gave absolute temperatures in previous
> versions (26.1, for example), but I just checked on version 25.1, and
> it, too, does as you say.
Right, see also (info "(calc) Basic Operations on Units") or <https://www.gnu.org/software/emacs/manual/html_node/calc/Basic-Operations-on-Units.html>,
which has exactly this example conversion:
The 'u c' command treats temperature units (like 'degC' and 'K') as
relative temperatures. For example, 'u c' converts '10 degC' to '18
degF': A change of 10 degrees Celsius corresponds to a change of 18
degrees Fahrenheit. To convert absolute temperatures, you can use the
'u t' ('calc-convert-temperature') command. The value on the stack must
be a simple units expression with units of temperature only. This
command would convert '10 degC' to '50 degF', the equivalent temperature
on the Fahrenheit scale.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2019-05-13 14:52 UTC | newest]
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2019-05-06 19:33 bug#35608: 26.2; Calc temperature conversions Harris, Bill
2019-05-06 21:19 ` Mauro Aranda
2019-05-06 21:27 ` Harris, Bill
2019-05-13 14:50 ` npostavs
2019-05-13 14:52 ` Harris, Bill
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