Getting xcas

Download Xcas for :

Once Xcas is installed, you can choose between xcas (graphical interface) and giac (text interface).
Navigate: version francaise, Back to Giac/Xcas main page

What's new?

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

Download the installer:

stable (0.9.5, December, 2011): HTTP or by FTP.
unstable HTTP
old stable (0.9.4): HTTP

Remarks :

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, you can also get them here (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, get the stable version or unstable. Click on the package, it should install in Applications.
For Mac OS X.4 and 5, get this disk image FTP (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 is using OpenGL capabilities for 3-d graphs and 3-d geometry, therefore you must check that your Xserver is correctly configured. If acceleration is supported for your videocard, check that the dri module is loaded in /etc/X11/xorg.conf or /etc/X11/XF86Config-4. If Xcas freezes on a command like plan(z=0), remove dri loading or install the correct drivers for your video card.

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

For 3-d graphs and geometry, 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
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, 0.9.5) HTTP
- all in one package (x64, 0.9.5) 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 (RedHat, Fedora, Mandriva...)

For 3-d graphs and geometry, please check the note above.
Package auto-generated from the debian one using alien. Hope it works!

Binaries (all distributions)

For recent binaries, go to Frederic Han Xcas page.
Old binaries up to version 0.8.6: For 3-d graphs and geometry, please check the note above.

Linux root with internationalization support FTP (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.
Linux user (without internationalization support). Install by
cd ; tar xvfz ~/xcas_user.tgz
run by
cd ~/xcas; ./xcas

Note that these binaries do not support dynamic module only, use Debian packages above or compile the source if you need them.

Xcas Windows CE

Daniel Alm provides a free for non-commercial use (not open-source) interface and binaries based on Giac. See on his site or click on this direct link if you want to download the binary without interface.
On this site, you will find old wince (ARM-PE) binaries, using gnuwince. Install cas.exe in your My Documents Folder, then open a file Cas with Pocket Word, save it in txt format. The file should contain xcas instructions, they are processed when you run cas and the result is written in the file Out to be opened again with Pocket word. Or install the small application Phatsoft qdCAS made by Luca Martinetti. The help file aide_cas might be used with the Xcas Help Reader developped by Statsnow.

Xcas Linux ARM

For smartbooks with a Ubuntu 10.10 ARM compatible version, follow the same instructions as for Intel debian packages.
Xcas ARM for some PDA with Linux (e.g. iPaq with Familiar 0.8.3 distribution or Zaurus with X11). Not updated anymore.

Giac on iPhone/iPad

A non free version of Giac (dual licensed) is included in the following applications

PocketCAS for iPhone/iPad by Daniel Alm
CAS Calc P11 for iPad by Power APP Gmbh

here