command line calculator?

[Tim Baker]

Does anyone know of a command line calculator that I could use with my batch
files in Windows? I would like to be able to give it a command such as "calc
5 * 2" or "calc sqrt 15" and then redirect the output to a file, where I can
pick up the result later.

thanks,
Tim

[Timo Salmi]

Tim Baker <tim.bak...@NOSPAMsomersetcare.co.uk> wrote:
> Does anyone know of a command line calculator that I could use with my batch
> files in Windows? I would like to be able to give it a command such as "calc

It is reasobaly easy to build it up with QBASIC or WBS. More on the
former option e.g. in

243153 Dec 27 2003 ftp://garbo.uwasa.fi/pc/link/tsbat.zip
tsbat.zip Useful MS-DOS batch files and tricks, T.Salmi

Alternatively, e.g.

ftp://garbo.uwasa.fi/pc/ts/tsfunc17.zip Plot/calculate functions T.Salmi
Filename Comment Date Time
-------- -------------------------------- ---- ----
FILE_ID.DIZ Brief characterization of tsfunc Oct-13-2001 09:59:50
FN.EXE Calculator (evaluates functions) Oct-13-2001 17:18:14 <----
FN.ICO Windows icon for Fn Feb-20-1998 19:08:38
FN.PIF Windows 3.1x PIF for Fn Feb-17-1998 08:06:28
FNP.EXE Plots any function Feb-20-1998 19:28:32
FNP.ICO Windows icon for Fnp Feb-21-1998 08:16:56
FNP.PIF Windows 3.1x PIF for Fnp Feb-21-1998 08:18:58
FNT.EXE Tabulates user's function Feb-20-1998 20:28:24
FNT.ICO Windows icon for Fnt Feb-20-1998 23:12:14
FNT.PIF Windows 3.1x PIF for Fnt Feb-21-1998 08:10:46
TSFUNC.INF Document and a readme Oct-13-2001 10:07:08
TSFUNC.NWS News announcements about tsfunc Oct-13-2001 10:15:42
TSPROG.INF List of programs from Timo Salmi Mar-26-2000 18:03:18
VAASA.INF Info: Finland, Vaasa, U of Vaasa Oct-18-1997 13:18:46
---- ------ ------ -----
0014 167304

All the best, Timo

--
Prof. Timo Salmi ftp & http://garbo.uwasa.fi/ archives 193.166.120.5
Department of Accounting and Business Finance ; University of Vaasa
mailto:t...@uwasa.fi <http://www.uwasa.fi/~ts/> ; FIN-65101, Finland
Timo's FAQ materials at http://www.uwasa.fi/~ts/http/tsfaq.html

[Charles Dye]

CMD.EXE has a simple expression evaluator in SET /A. It supports basic
arithmetic functions, but little more.

set /a result=5 * 2
echo Five times two is %result% > outfile.txt

CMD.EXE is the CLI which ships with Windows NT/2000/XP. It's the most-
used command shell for these operating systems, but not the only one nor
the best. 4NT, a commercial replacement from JP Software, has a better
expression evaluator in the @EVAL function. Since this is a function,
you don't need a separate command to do math. You just put your
calculations inline, rather like a programming language:

echo The square root of 15 is %@eval[15 ** 0.5] > outfile.txt

Rolling the 4NT function into a command is trivial; use an alias:

alias calc=`echo %@eval[%$]`
calc 15 ** 0.5 > outfile.txt

--
Charles Dye ras...@highfiber.com

[Phil Robyn]

Tim Baker wrote:

C:\cmd>type C:\cmd\demo\WSHCalc.cmd
@echo off
echo>~tmp.vbs WScript.Echo Eval("%*")
for /f "tokens=*" %%a in ('cscript //nologo ~tmp.vbs') do echo %%a
del ~tmp.vbs

C:\cmd>demo\WSHCalc (123.45 * 17.91)/8.72
253.553841743119

--
Phil Robyn
Univ. of California, Berkeley

u n z i p m y a d d r e s s t o s e n d e - m a i l

[Tim Baker]

Thanks for all the the ideas guys!

Tim

[Timo Salmi]

DRAFT:

61} How can one devise a command line calculator?

There are several options. A fairly trivial, but severely limited
option is using the SET /A command. For example
@echo off & setlocal enableextensions
set /a x=4+7
echo %x%
endlocal & goto :EOF
The output would be
D:\TEST>cmdfaq
11

A second option is using G(nu)AWK. For example
@echo off & setlocal enableextensions
gawk 'BEGIN{printf"%%s\n",4/7}'
endlocal & goto :EOF
The output would be
D:\TEST>cmdfaq
0.571429
This option could be used to perform quite complicated calculations.

A third option is using a third-party program such as FN.EXE from
ftp://garbo.uwasa.fi/pc/ts/tsfunc17.zip (or whatever is the current
version number). An example
D:\TEST>fn sin(45*3.1415926536/180) /b
0.7071067812

A fourth option is using QBASIC or GWBASIC, if available. For more
see
FU.BAT Poor man's function evaluator
and the MS-DOS+Win../95/98/ME FAQ ftp://garbo.uwasa.fi/pc/link/tsbat.zip
item "141. Can I calculate factorials in a batch? Do I need
recursion?" which is sufficiently compatible with NT/2000/XP.

A fifth option is letting the CMD.EXE script build a Visual Basic
Script (VBScript)
@echo off & setlocal enableextensions
::
:: Usage
if [%1]==[] (
echo.+----------------------------------------------------+
echo ^| VCALC.CMD to perform Visual Basic calculations ^|
echo ^| By Prof. Timo Salmi, Last modified Tue 23-Mar-2004 ^|
echo +----------------------------------------------------+
echo.
echo Usage: %~f0 Formula
echo.
echo Examples: VCALC 4 / 7 * 2.5
echo VCALC Round^(Sqr^(2^),3^)
echo VCALC 2^^^^4 [Note the need of double carets ^^]
echo VCALC 103 mod 10
echo VCALC 103 \ 10
echo VCALC Exp^(1^)
echo VCALC Log^(10^)
echo VCALC sin^(45*3.1415926536/180^)
echo VCALC CDbl(rnd)
goto :EOF)
::
:: Make a temporary directory
if not exist c:\mytemp mkdir c:\mytemp
::
:: Build a Visual Basic Script
echo Randomize>c:\mytemp\vbscalc.vbs
echo WScript.Echo Eval("%*")>>c:\mytemp\vbscalc.vbs
::
:: Run it with Microsoft Windows Script Host Version 5.6
cscript //nologo c:\mytemp\vbscalc.vbs>c:\mytemp\result.txt
::
:: The result from the optional output file
type c:\mytemp\result.txt
::
:: Clean up (leave c:\mytemp\result.txt if need be)
for %%f in (c:\mytemp\vbscalc.vbs c:\mytemp\result.txt) do (
if exist %%f del %%f)
rmdir c:\mytemp
endlocal & goto :EOF

All the best, Timo

--
Prof. Timo Salmi ftp & http://garbo.uwasa.fi/ archives 193.166.120.5
Department of Accounting and Business Finance ; University of Vaasa
mailto:t...@uwasa.fi <http://www.uwasa.fi/~ts/> ; FIN-65101, Finland

Useful script files and tricks ftp://garbo.uwasa.fi/pc/link/tscmd.zip

[Tim Baker]

"Timo Salmi" <t...@UWasa.Fi> wrote in message
news:c3p8k9$8...@poiju.uwasa.fi...
> DRAFT:

>
> A third option is using a third-party program such as FN.EXE from
> ftp://garbo.uwasa.fi/pc/ts/tsfunc17.zip (or whatever is the current
> version number). An example
> D:\TEST>fn sin(45*3.1415926536/180) /b
> 0.7071067812
>

Timo, thanks for that program, it does exactly what I need, and keeps the
readability of my batch files a lot better than the other solutions. I will
definately be looking through your FTP site for any other useful little
apps!
Thanks,

Tim

[Dr John Stockton]

JRS: In article <c3p8k9$8...@poiju.uwasa.fi>, seen in
news:alt.msdos.batch.nt, Timo Salmi <t...@UWasa.Fi> posted at Tue, 23 Mar
2004 13:55:53 :-

>A fifth option is letting the CMD.EXE script build a Visual Basic
>Script (VBScript)

You should be able to add "or javascript"; there are examples at
<URL:http://www.merlyn.demon.co.uk/batfiles.htm#WSH> (tested only in
Win98, AFAIK) which show javascript doing things that VBScript cannot
[so readily]? do.

--
© John Stockton, Surrey, UK. ?@merlyn.demon.co.uk DOS 3.3, 6.20; Win98. ©
Web <URL:http://www.merlyn.demon.co.uk/> - FAQqish topics, acronyms & links.
PAS EXE TXT ZIP via <URL:http://www.merlyn.demon.co.uk/programs/00index.htm>
My DOS <URL:http://www.merlyn.demon.co.uk/batfiles.htm> - also batprogs.htm.