Release of version 1.0.19 (29 November 1999)

Improved windows version.

Release of version 1.0.18 (28 November 1999)

Improved server code
implemented a simple database
improved error reporting. Errors now show the file and line the error occurred.

Release of version 1.0.17 (27 November 1999)

removed the const from LispString (some compilers fell over it)
improved the server to also serve html pages, and allow for password authentication.
Fixed online manual building. You can now type './mkmanual', and then when in yacas, type '??', and help should pop up again.

Release of version 1.0.16 (22 November 1999)

The : operator now also accepts strings. "a" : "b" should now return "ab"
The manual is now completely generated using Yacas as a document processing language, much like LaTeX.

Release of version 1.0.15 (20 November 1999)

Drop, Take, Partition incorporated in the distribution (as supplied by Juan Pablo Romero).
Assoc lists are now implemented.
Fixes to make yacas work on a Dec Alpha.
improvements to the autoconf/automake scripts

Release of version 1.0.14 (12 November 1999)

%d numbering in server input/output
DestructiveReplace, Replace
change CanBeUni to support f(x)/const constructions. Expand(Taylor(Sin(a*x),x,0,3)) will now work correctly.
Expand a little on integration.
- Integrate standard analytic functions like Sin, Cos, Exp.
- partial integration: first step could be integrating polynomial*function.
Make a LispString derived class that can use a const string, copied, and thus not freed.
files IN the executable.
- allow loading from exe.
- a mechanism to put scripts in the executable (preliminary).

Release of version 1.0.13 (12 November 1999)

moved to autoconf/automake scripts.
many many many changes to clean up the source distribution, thanks to Daniel Richard G.

Release of version 1.0.12rev1 (11 November 1999)

Changes to allow compilation under Sun/SGI.
Improved the www server. Check cgiserver02.
added FromString command.
slight change to license. It should now at least be compatible with GPL licenses.

Release of version 1.0.12 (7 November 1999)

There is now a mini www server in the server/ directory! Read the readme file for its usage.

Release of version 1.0.11

Added code to support Windows, supplied by James Gilbertson
Added fix to support GMP again. Supplied by Igor Khavkine.
Added Sum({list}) and Average({list}). Examples: Sum({1,2,3}) evaluates to 6, and Average({1,2,3}) evaluates to 2.

Release of version 1.0.10

Fixed bug in BubbleSort
Added 'Diverge', 'Curl' and 'FillList', and threaded derivatives as supplied by Igor Khavkine. Example: D({x,y,z})Sin(x*y).

Release of version 1.0.9

DOCUMENTATION

IsInFix, IsPreFix, IsPostFix, OpPrecedence, GetPrecision
BitAnd, BitOr, BitXor
functional operators :, .., @, /@
Find, Simplify, Conjugate, Rationalize

ENGINE

additional debug code: count number of defined functions: built-ins, RuleBases.
binarysearch in some places, in stead of linear search.
split mathenvironment into that plus commands.cpp/h
Add support for access to some engine information:
- GetPrecision()
- IsInFix, IsPreFix, IsPostFix, OpPrecedence.
BitAnd, BitOr, BitXor

MATH

Added the functional operators, .., :, @ and /@, to the standard loaded functions.
implemented list[[{index}]]. So now you can do list[[2 .. 4]], which will return a list with the elements 2, 3 and 4 of the original list.
Change syntax for Limit: Limit(var,value) function

Release of version 1.0.8

Access to help from the console version, by typing ??. This uses lynx.
Experimented a little with a calculator approach. See fltkcalc for the results.
Home page redesigned.

Release of version 1.0.7

Another bug fix release. Rule base code has been cleaned up. A precedence scheme for rules is now in place. This should avoid bugs due to rules interacting in unforeseen ways. Speedups in the code where lists were built: Concat replaced by DestructiveInsert. Reverse changed into DestructiveReverse.

Release of version 1.0.6

Bug fix release. Implemented InverseTaylor. Extended manual some.

Release of version 1.0.5

Changed form of manual on home page. It now uses frames. Added Polynomial support, preliminary symbolic integration. Several bug fixes. Created a mailing list yacas@onelist.com

Release of version 1.0.4

Added just-in-time loading. Spreaded the rules database over many small files, so application startup should be a lot faster. Added support for threaded functions. Assorted bug fixes.

Release of version 1.0.3

Added MathNth (in place of Nth, which is now implemented in 'standard' package). Added an fltk-based application (yacasnotepad).

Release of version 1.0.2

Implementation of a native arbitrary precision arithmetic module. The source is now more platform-independent. Some bugs were fixed, and new commands added.

Release of version 1.0.1

Improved math rules database. Implemented the most important linear algebra algorithms. Added yaglviewer, a small interactive 3d viewer based on OpenGL and glut. yaglviewer is basically a standalone application, reading a very simple scripting language with commands similar to opengl's, and then showing the result.

Release of version 1.0 (initial release).

This is the first fully working version of Yacas that is released as free source.

The language specification has been finalized, so future releases should be backward-compatible.

This distribution contains a small library with mathematical algorithms.