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 DEBIAN
acme::poe::knee
Acme::POE::Knee(3pm) User Contributed Perl Documentation Acme::POE::Knee(3pm)NAME
Acme::POE::Knee - Time sliced pony race using the POE kernel.
REQUIREMENTS
Acme::POE::Knee requires the POE module to run. You can get that as well
from CPAN or look at poe.sourceforge.net
SYNOPSIS
#!/usr/bin/perl -w
use strict;
# Use POEny!
use Acme::POE::Knee;
# Every Acme::POE::Knee race will require a set of arguments.
# There are defaults but it's just more fun to set these
# yourselves. We set a distance the ponies must run and of course
# we name our race ponies! You'll have to specify the maximum
# delay a pony can have before reaching the next stage.
# The lower the delay, the higher the chances are the pony will
# win the race.
my $pony = new Acme::POE::Knee (
dist => 20,
ponies => {
'dngor' => 5,
'Abigail' => 5.2,
'Co-Kane' => 5.4,
'MJD' => 5.6,
'acme' => 5.8,
},
);
# start the race
$pony->race( );
exit;
QUICK LINKS
Please see the samples directory in POE's distribution for several well-commented sample and tutorial programs.
Please see <http://www.perl.com/pub/2001/01/poe.html> for an excellent, and more importantly: gradual, introduction to POE.
DESCRIPTION
POE::Knee is an acronym of "Pony". We all like ponies. And wouldn't we love to race ponies? Well, that's what Acme::POE::Knee is for!
It's great for those friday afternoons at the office, where you wonder who will pay the beer tab. Whoever 'wins' the race, loses!
You specify a distance the ponies must run, and a maximum delay before the pony will reach the next step. So, the bigger the delay, the
bigger the distance between multiple ponies can be.
Of course this wouldn't be any fun if we couldn't name the ponies ourselves. Here, we simply put all our race ponies in an array reference
and the Acme::POE::Knee module will take care of the rest.
USING Acme::POE::Knee
Using Acme::POE::Knee is really easy. This simple progam would already suffice:
use strict;
use Acme::POE::Knee;
my $pony = new Acme::POE::Knee;
$pony->race();
exit;
This will use the defaults of the POE::Knee module, but you can of course specify your own arguments, as shown in the synopsis.
The Use of Acme::POE::Knee
Use, yes... Usefull? Probably not. This was written in responce to a rather persistant meme on #perl (you know who you are!). Basicly, we
all wanted ponies. Well folks, here it is.
It's source might be interesting to look at for newcomers to POE to see how this time slicing works.
Learning more about POE
The POE Mailing List
POE has a mailing list at perl.org. You can receive subscription information by sending e-mail:
To: poe-help@perl.org
Subject: (anything will do)
The message body is ignored.
All forms of feedback are welcome.
The POE Web Site
POE has a web site where the latest development snapshot, along with the Changes file and other stuff may be found:
<http://poe.perl.org/>
SourceForge
POE's development has moved to SourceForge as an experiment in project management. You can reach POE's project summary page at
<http://sourceforge.net/projects/poe/>.
Author
Jos Boumans
Jos Boumans is <kane_at_cpan.org>. POE::Knee is his brainchild.
Rocco Caputo
Rocco Caputo is <troc+poe@netrus.net>. POE itself is his creation.
COPYRIGHT
Copyright (c) 2001, Jos Boumans. All Rights Reserved. This module is free software. It may be used, redistributed and/or modified under the
terms of the Perl Artistic License (see http://www.perl.com/perl/misc/Artistic.html)
Except where otherwise noted, POE is Copyright 1998-2001 Rocco Caputo. All rights reserved. POE is free software; you may redistribute it
and/or modify it under the same terms as Perl itself.
perl v5.10.0 2009-07-21 Acme::POE::Knee(3pm)