As others noted - this has the potential to be hellishly complex.
you could write a simple perl frontend to pari using one of it's interfaces, if you have to use perl. Pari interprets algebraic statements and then can work with them.
Heres a script i wrote as a bit of practise. What it does is insert a line in the middle of a file. The line being $1 and the file being $2
#!/bin/bash
rm tempfile
touch tempfile
count=1
linenum= `wc -l < $2`
if
then
echo $1 >> $2
else
even=`expr "$linenum" % 2`
if
then... (3 Replies)
Hay, guys,
Any ideas how to calculate like this:
in first file, there're number of lines listing 2+3, 6*9 .......
Then, how to get the result and put them in another file in format:
2+3 5
6*9 54
......
sheerly by shell command, no scripts required. (4 Replies)
Hi,
Is there a way to evaluate an equation contained in a string within an AWK script?
For example:
A = "(5*2)-1" (this equation is read from a file and varies line by line)
In this example, I can't see any way to get an answer of 9 unless I do:
cmd = "awk 'BEGIN{print "A"}'"
cmd |... (3 Replies)
Hello,
I'm trying to write a while loop for a decimal value in tcsh which I know can't be done. Instead I want my increments to be one order of magnitude too large and then divide it by 10 when I use the variable. However, I don't know how to divide my variable and set it as another.
set... (1 Reply)
I'm running a MPI program using a cluster of 4 machines(different machines of different processing power,cpu utilization etc.). I'm trying to balance the computation among the machine to get the minimum execution time for that. I tried to balance it by creating a threshold value by taking the load... (1 Reply)
Hi All
I've made a few scripts which using GDAL extract the value of a pixel within a given raster. The purpose is to work out the combine value of every pixel. I thought there may have been an easier way to do this but alas!
The code below extracts the pixel value at position X Y. The... (3 Replies)
Hi, I am trying to make a maths calculator that:
1. Prompts the user for a number.
2. Prompts the user for an operation (add, subtract, divide or multiply)
3. Prompts the user for a number.
4. Prompts the user for another operation (same as above) OR the option to get the result for the... (4 Replies)
Hi,
Need help on this. I need to increment a variable by 1 but retain as 2 characters.
I am using expr to do additions:
NEWSERIAL=`expr $SERIAL + 1`
$SERIAL can range from 01-99. After adding "1", I need the result to be 2 characters, eg: 02+1 = 03. By default expr will truncate the... (4 Replies)
HI All,
I have a script in bash that i want that script will perform action
When the size of a particular folder exceeds the 80%.
Here is an example of script that result is exactly 80% :
#!/bin/bash
CHECK=$(df -h /var/log/syslog | grep '80%' | xargs echo | cut -d' ' -f5)
if ];... (1 Reply)
Hi guys...
I am loving this integer maths thing.
64 bit systems are certainly easier than 32 bit, but hey, I don't intend to leave out my fav' platform.
Using one of the 'Brothers' methods, URL inside the code.
#!/bin/sh
#
# #!/usr/local/bin/dash
# e_constant.sh
# Brother's formula .
#... (2 Replies)
Discussion started by: wisecracker
2 Replies
LEARN ABOUT SUSE
perlepoc
PERLEPOC(1) Perl Programmers Reference Guide PERLEPOC(1)NAME
README.epoc - Perl for EPOC
SYNOPSIS
Perl 5 README file for the EPOC Release 5 operating system.
INTRODUCTION
EPOC is an OS for palmtops and mobile phones. For more informations look at: http://www.symbian.com/
This is a port of perl to the epocemx SDK by Eberhard Mattes, which itself uses the SDK by symbian. Essentially epocemx it is a POSIX look
alike environment for the EPOC OS. For more information look at: http://epocemx.sourceforge.net/
perl and epocemx runs on Epoc Release 5 machines: Psion 5mx, 5mx Pro, Psion Revo, Psion Netbook and on the Ericsson M128. It may run on
Epoc Release 3 Hardware (Series 5 classic), too. For more information about this hardware please refer to http://www.psion.com/
Vendors which like to have support for their devices are free to send me a sample.
INSTALLING PERL ON EPOC
You can download a ready-to-install version from http://www.oflebbe.de/perl/perl5.html
You will need at least ~6MB free space in order to install and run perl.
Please install the emxusr.sis package from http://epocemx.sourceforge.net/ first.
Install perl.sis on the EPOC machine. If you do not know how to do that, consult your PsiWin documentation.
Perl itself and its standard library is using 4 MB disk space. Unicode support and some other modules are left out. (For details, please
look into epoc/createpkg.pl). If you like to use these modules, you are free to copy them from a current perl release.
STARTING PERL ON EPOC
Please use the epocemx shell to start perl. perl integrates with the conventions of epocemx.
Features of Perl on Epoc
The built-in function EPOC::getcwd returns the current directory.
Restrictions of Perl on Epoc
Features are left out, because of restrictions of the POSIX support in EPOC:
o socket IO is only implemented poorly. You can only use sysread and syswrite on them. The commands read, write, print, <> do not work
for sockets. This may change iff epocemx supports sockets.
o kill, alarm and signals. Do not try to use them. This may be impossible to implement on EPOC.
o select is missing.
o binmode does not exist. (No CR LF to LF translation for text files)
o EPOC does not handle the notion of current drive and current directory very well (i.e. not at all, but it tries hard to emulate one).
See PATH.
o Heap is limited to 4MB.
o Dynamic loading is not implemented.
Compiling Perl 5 on the EPOC cross compiling environment
Sorry, this is far too short.
o You will need the epocemx SDK from Eberhard Mattes.
o Get the Perl sources from your nearest CPAN site.
o Unpack the sources.
o Build a native perl from this sources... Make sure to save the miniperl executable as miniperl.native.
Start again from scratch
cp epoc/* .
./Configure -S
make
cp miniperl.native miniperl
touch miniperl.exe
make
perl createpkg.pl
emxsis perl.pkg perl.sis
SUPPORT STATUS OF PERL ON EPOC
I'm offering this port "as is". You can ask me questions, but I can't guarantee I'll be able to answer them. Since the port to epocemx is
quite new, please check the web for updates first.
Very special thanks to Eberhard Mattes for epocemx.
AUTHOR
Olaf Flebbe <olaf@oflebbe.de> http://www.oflebbe.de/perl/perl5.html
LAST UPDATE
2003-01-18
perl v5.12.1 2010-04-26 PERLEPOC(1)