Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Perl - maths equation - need help
Top Forums Shell Programming and Scripting Perl - maths equation - need help Post 302288996 by jim mcnamara on Wednesday 18th of February 2009 01:27:45 PM
Old 02-18-2009
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.

Code:
http://clisp.sourceforge.net/impnotes/pari.html

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Problem with Maths

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)
Discussion started by: Quesa
3 Replies

2. UNIX for Dummies Questions & Answers

equation calculation on Unix

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)
Discussion started by: robbinGlasses
4 Replies

3. Shell Programming and Scripting

AWK equation evaluation.

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)
Discussion started by: srdgeo
3 Replies

4. Shell Programming and Scripting

Maths with variables

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)
Discussion started by: DFr0st
1 Replies

5. High Performance Computing

Performance Equation

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)
Discussion started by: chamila1986
1 Replies

6. Shell Programming and Scripting

Using IF statements with maths where the input is not an integer

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)
Discussion started by: StudentFitz
3 Replies

7. Shell Programming and Scripting

Simple maths calculator loop.

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)
Discussion started by: johnthebaptist
4 Replies

8. Shell Programming and Scripting

Maths in shell scripts

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)
Discussion started by: vchee
4 Replies

9. Shell Programming and Scripting

Help with insert a value equation in bash script

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)
Discussion started by: Aviel.shani
1 Replies

10. Shell Programming and Scripting

Calculate the constant e to 14+ decimal places using integer maths.

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

gtk3

Gtk3(3pm)						User Contributed Perl Documentation						 Gtk3(3pm)

NAME

       Gtk3 - Perl interface to the 3.x series of the gtk+ toolkit

SYNOPSIS

	 use Gtk3 -init;
	 my $window = Gtk3::Window->new ('toplevel');
	 my $button = Gtk3::Button->new ('Quit');
	 $button->signal_connect (clicked => sub { Gtk3::main_quit });
	 $window->add ($button);
	 $window->show_all;
	 Gtk3::main;

ABSTRACT

       Perl bindings to the 3.x series of the gtk+ toolkit.  This module allows you to write graphical user interfaces in a Perlish and object-
       oriented way, freeing you from the casting and memory management in C, yet remaining very close in spirit to original API.

DESCRIPTION

       The Gtk3 module allows a Perl developer to use the gtk+ graphical user interface library.  Find out more about gtk+ at
       <http://www.gtk.org>.

       The gtk+ reference manual is also a handy companion when writing Gtk3 programs in Perl: <http://developer.gnome.org/gtk3/stable/>.  The
       Perl bindings follow the C API very closely, and the C reference documentation should be considered the canonical source.

       To discuss Gtk3 and ask questions join gtk-perl-list@gnome.org at http://mail.gnome.org/mailman/listinfo/gtk-perl-list
       <http://mail.gnome.org/mailman/listinfo/gtk-perl-list>.

       Also have a look at the gtk2-perl website and sourceforge project page, http://gtk2-perl.sourceforge.net
       <http://gtk2-perl.sourceforge.net>.

   Porting from Gtk2 to Gtk3
       The majority of the API has not changed, so as a first approximation you can run "s/Gtk2/Gtk3/" on your application.  A big exception to
       this rule is APIs that were deprecated in gtk+ 2.x -- these were all removed from gtk+ 3.0 and thus from Gtk3.  The migration guide at
       <http://developer.gnome.org/gtk3/stable/migrating.html> describes what to use instead.  Apart from this, here is a list of some other
       incompatible differences between Gtk2 and Gtk3:

       o   The call syntax for class-static methods is now always "Gtk3::Stock::lookup" instead of "Gtk3::Stock->lookup".

       o   The %Gtk2::Gdk::Keysyms hash is gone; instead of "Gtk2::Gdk::Keysyms{XYZ}", use "Gtk3::Gdk::KEY_XYZ".

       o   The Gtk2::Pango compatibility wrapper was not carried over; simply use the namespace "Pango" everywhere.  It gets set up automatically
	   when loading Gtk3.

       o   The Gtk3::Menu menu position callback passed to popup() does not receive x and y parameters anymore.

       Note also that Gtk3::CHECK_VERSION will always fail when passed 2.y.z, so if you have any existing version checks in your code, you will
       most likely need to remove them.

SEE ALSO

       Glib
       Glib::Object::Introspection

AUTHORS

       Torsten Schoenfeld <kaffeetisch@gmx.de>

COPYRIGHT AND LICENSE

       Copyright (C) 2011-2012 by Torsten Schoenfeld <kaffeetisch@gmx.de>

       This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as
       published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

perl v5.14.2							    2012-06-23								 Gtk3(3pm)
All times are GMT -4. The time now is 09:19 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy