Projects / reken


reken is an command-line calculator based on a C coded expression evaluator. It can use user-defined functions and variables. Functions can be integrated (numerically) and differentiated (numerically). An input file can be used for complete calculations or to set up the command-line environment before use (things like PI and some standard functions can be set). Integrating is not fast and not very precise, but should suit hobby calculation needs.

Operating Systems

Recent releases

  •  04 Oct 2004 12:04

    Release Notes: A serious variable handling bug that caused variables local to functions to be mixed up with normal variables, giving unpredicted results was fixed.

    •  24 Sep 2004 14:28

      Release Notes: The set of math functions has been expanded; now ln(x) and log(x) can be used. A new variable type has been added (const) that can't be changed by a normal assignment. Parsing of number values has been improved so that numbers in "1e-3" are read correctly. A file command has been added so that files can be read and evaluated from the "reken" console.

      •  24 Sep 2004 13:33

        Release Notes: This release adds a new integration algorithm (romberg) for faster and better results.

        •  22 Sep 2004 10:25

          No changes have been submitted for this release.


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