• Yacas: A do-it-yourself symbolic algebra environment
    • Introduction
    • Basic design
    • The Yacas kernel functionality
    • The Yacas scripting language
    • Currently supported CAS features
    • Interface
    • Documentation
    • Future plans
    • References
  • M. Wester's CAS benchmark and Yacas
  • On Yacas programming
    • Example: implementing a formal grammar
    • Example: Using rules with special syntax operators creatively
    • Creating plugins for Yacas
    • Embedding Yacas into a c or c++ application
  • Why -x^(-1) and -1/x are not the same in Yacas
    • Canonical and normal representations
    • But how can we then build a powerful CAS?
    • Conclusion
  • For Yacas developers
    • A crash course in Yacas maintenance for developers
    • Preparing and maintaining Yacas documentation
    • The Yacas build system
  • Designing modules in the Yacas scripting language
    • Introduction
    • Demonstration of the problem
    • Declaring resources to be local to the module
    • When to use and when not to use LocalSymbols
  • The Yacas arithmetic library
    • Introduction
    • The link between the interpreter and the arithmetic library
    • Interface of the BigNumber class
    • Precision of arithmetic operations
    • Implementation notes
  • The Yacas script compilation system
    • Development of scripts that get compiled to plugins
    • Bootstrapping scripts as plugins into Yacas
    • Steps to make a compiled script
  • Internal workings of the compiler
    • The Yacas calling convention
    • Registers
    • The compiler instruction set
    • An example
    • Execution
  • Syntax conversion for programs written in other languages
    • Introduction
    • Rationale
    • General approach
    • Applications
    • Implementation
    • Organization of the source files
    • Optimizers
    • Examples
    • Compatibility modes
    • Problems with Common Lisp code interpretation
  • Parsing a language
  • GNU Free Documentation License