Hi! Due to popular demand I have written a little interactive shell ("ginsh") for GiNaC with flex/bison. The error handling is catastrophic but most of the basic functionality is there (entering and printing expressions, assigning symbols, functions, and expression manipulation). The syntax is mostly like you would write it in C++ (but you use "^" for powering). You can exit ginsh by entering "quit", "exit" or EOF (Ctrl-D). A small example session: ghost:~/project/ginsh$ ./ginsh ginsh - GiNaC Interactive Shell V0.1 Copyright (C) 1999 Johannes Gutenberg Universitaet Mainz, Germany This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details.

a=x+y; x+y expand(a^3); 3*y^2*x+3*y*x^2+y^3+x^3 "/a; x+y^(-1)*(3*y^2*x+3*y*x^2+y^3+x^3) [NOTE: there is an output bug here, it should be "(x+y)^(-1)*..."] normal("); 2*y*x+y^2+x^2 diff(",x); 2*x+2*y subs(",x==2); 2*y+4 quit ghost:~/project/ginsh$

There is no documentation yet, so consult the source if you have questions. :-) To get ginsh, type cvs checkout ginsh in your "projects" directory. Bye, Christian -- / Coding on PowerPC and proud of it \/ http://www.uni-mainz.de/~bauec002/