2.2 Features of Asir

As mentioned in the previous section, Asir is a standard language interface forRisa’s algebraic engine. Usually, it is provided as an executable file named asir. Main features supported for the current version of Asir is as follows.

• A C-like programming language
• Arithmetic operations (addition, subtraction, multiplication and division) on numbers, polynomials and rational expressions
• Operations on vectors and matrices
• List processing operations at the minimum
• Several Built-in functions (factorization, GCD computation, Groebner basis computation etc.)
• Useful user defined functions(e.g., factorization over algebraic number fields)
• A dbx-like debugger
• Plotting of implicit functions
• Numerical evaluation of mathematical expressions including elementary transcendental functions at arbitrary precision. This feature is in force only if PARI system (see section pari).
• Distributed computation over UNIX

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