Projects / reken

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.

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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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