Getting xcas

• Windows,
• Mac OS X,
• Linux debian/ubuntu,
• Linux rpm,
• archlinux,
• Linux binaries,
• Free BSD,
• Android,
• TI Nspire,
• Windows CE,
• Linux ARM,

What's new?

• version 1.1.4 (february 2015): some improvements in numeric linear algebra (for example linsolve now accepts the LU decomposition as argument for faster linear system solving)
• version 1.1.3 (december 2014): New functions for sound: soundsec, playsnd, and simplification for writewav. fft now calls GSL if available and is therefore faster.
• version 1.1.2 (september 2014): Rational univariate representation for solving polynomial systems efficiently. Fast modular Groebner basis engine (already there in recent 1.1.0).
  Interval arithmetic.
• version 1.1 (july 2013): more commands for probability and statistics. Many bug fixes. Adaptive numeric integration.
• version 1.0 (november 2012): syntaxic coloration in commandlines.
• version 0.9.9: easier construction of non-prime finite fields (GF), optimizations for determinant/inverse of matrices with integer coefficients (for example det(hilbert(100)) takes 0.56s on an AMD 64 bits at 2.8_GHz).
• version 0.9.8: quadratic sieve for factoring integers from 40 to 77 digits (speed between PARI and msieve/yafu)
• version 0.9.5: lapack support
• version 0.9.4: access to matrices starting at 1 instead of 0 in Xcas mode with double-brackets, e.g. M[[1,2]]. Enlarge/Shrink program editor with F5/F6. The reference card is now installed (instead of online).
• version 0.9.3: some commands now accepts function, for example f(x):=sin(x)*x; g:=f'
• version 0.9.0:
  New item in Help->Internet: reference card
  Documentation is now translated from LaTeX using hevea instead of latex2html: size as decreased with similar rendering quality
  New algorithms implemented for GCD and factorization of multivariate polynomials, resulting in sometimes significant speedup for many simplifications.
  The windows version is compiled with the latest cygwin version (1.7), it is no more compatible with windows version older than XP.

Xcas for Windows

• stable (1.1.4, February 2015): 32 bits, 64 bits (experimental).
• unstable HTTP
• old stable (1.1.2): HTTP

• Xcas should work on all versions of Windows from Windows 98 to Windows XP, but some people have reported problems with Windows Vista (it works on my laptop, sometimes slow for dynamic geometry). If this happens to you, a partial solution is to get a linux live CD with Xcas (by Wangji Hoan).
• Windows 98 users should replace the 0.8.6 old stable executables inside Xcas install directory by the files of this archive.
• If you want preview support, please install Ghostscript and GSview (there are two packages too install)
• Since version 0.6.3 of Xcas for Windows, the xcas.exe binary is linked to a DLL (giac.dll), hence the standalone text version icas.exe has been added, and cygwin developpers may use giac.dll to include symbolic functions in their C++ programs.

Xcas for Mac OS X

• For Mac OS X.6/7/8, get the stable version or unstable. Click on the package, it should install in Applications. 64 bits versions of the executables are also available (faster integer arithmetic but 3-d legends do not display) /Applications/usr/bin/icas, /Applications/usr/bin/xcas.app/Contents/MacOS/xcas
• For Mac OS X.4 and 5, get this disk image HTTP. Click on the package inside the disk image, it should install Xcas in Applications.
  Warning: If you have an old Mac PPC where Xcas for OS X.3 was already installed, follow the instructions here. There is no problem if you make a fresh install.

Xcas for Linux

Incompatibility with Unity

Note for 3-d on Linux

Debian packages (Debian, Ubuntu: i386 32, 64 bits, ARM)

• Please check the note above.
• Add the line
  deb http://www-fourier.ujf-grenoble.fr/~parisse/debian/ stable main
  in the file /etc/apt/sources.list. Then run
  sudo apt-get update
  Now you can install or upgrade by running
  sudo apt-get install giac python-giacpy
  (python-giacpy is optionnal, it's for Python programmers support).
  If install fails because libgmp3c2 is missing, replace main by testing in the line above in /etc/apt/sources.list and run again both commands.
  If you do not want to get warning messages about invalid/unknown key, download the Xcas public GPG key and run the following command in a terminal from the directory where you stored the key
  sudo apt-key add xcas_public_key.gpg
  This must unfortunately be done until giac/xcas is included in debian, ubuntu, etc. distributions (awaiting this for debian since about 10 years now:-().
• If you want to test the latest version, use the following line instead
  deb http://www-fourier.ujf-grenoble.fr/~parisse/debian/ testing main
  
• If it does not work, try to install one or more packages as explained below.
  • all in one package (i386, 1.1.3) HTTP
  • all in one package (x64, 1.1.4) HTTP
  To install type
  sudo dpkg -i *giac*.deb
• If dpkg complains about missing packages, check the package names and issue an apt-get command like
  sudo apt-get install libstdc++5
• If you have an error reporting that libreadline.so.5 is missing, install it (sudo apt-get install readline5) or if readline is already installed (e.g. version 6), type the commands
  cd /usr/lib; sudo ln -s libreadline.so.6 libreadline.so.5 ; sudo ldconfig
• Carlos Enriqe Carleos Artime made the first giac packages.

RPM (OpenSuse, Fedora, Mandriva...)

• 64 bits: Open Suse 12.2 (old 1.1.0)
  For Mageia, please also check Frederic Han Xcas page.
• 32 bits: Open Suse 12.2 (old 1.1.0)

Xcas for archlinux

Binaries PC (all distributions)

• Version 1.0 for i386: here. Unarchive e.g. from /usr/local. They may require some environment variable changes
  • export LD_LIBRARY_PATH=/usr/local/lib (replace /usr/local with the actual path)
  • export XCAS_ROOT=/usr/local/bin (replace /usr/local with the actual path)
  • export XCAS_HELP=/usr/local/share/giac (replace /usr/local with the actual path)
• For recent binaries, go to Frederic Han Xcas page.
• Old binaries up to version 0.8.6: Please check the note above.
  • Linux root with internationalization support HTTP. Install as root: first edit /etc/ld.so.conf and add the two lines /usr/lib then /usr/local/lib. Now run
    cd / ; tar xvfz ~/xcas_root.tgz ; ldconfig
    After install, type
    xcas &
    If the previous link does not work, another version (updated from time to time) is available here.
  Note that these binaries do not support dynamic module only, use Debian packages above or compile the source if you need them.

Khicas: Giac for the TI Nspire

Android

• An interface in alpha version for Android tablets and smartphone, written by Thomas Luka. It is not yet ready for the Google play, but you can download this file on your tablet or smartphone, then use a file manager to change the extension to .apk (since the browser has changed the extension), then execute it. Or if you have the Android SDK, download the file to your host, connect your device and run the command adb install Androcas-debug.apk.
• On google play, there is a free application for tablets (does not work on some smartphones) based on giac, named Xcas Pad, written by Leonel Hernandez.
• A free app to isolate real roots of polynomial is available here. This application was written by Antonis Berkakis under the supervision of Alkiviadis G. Akritas and is offered by the University of Thessaly, Greece.

Xcas Windows CE

Xcas Linux ARM

Giac on iPhone/iPad

• PocketCAS for iPhone/iPad by Daniel Alm
• CAS Calc P11 for iPad by Power APP Gmbh
• A free app to isolate real roots of polynomial is available here. This application was written by Spyros Kehagias under the supervision of Alkiviadis G. Akritas and is offered by the University of Thessaly, Greece