CoreCalc - Spreadsheet Core Implementation in C#

Corecalc

A Spreadsheet Core Implementation in C#

CoreCalc, a Spreadsheet Core Implementation in C#

CoreCalc is an implementation of core spreadsheet functionality in C#, intended as a platform for experiments with technology and novel functionality.

CoreCalc is a research prototype, not a usable replacement for Microsoft Excel, Gnumeric or OpenOffice Calc.

News

November 2008: Ongoing work concerns runtime code generation for sheet-defined functions in an extension of the CoreCalc implementation.
October 2007: We now have an implementation and validation of the support graph technology in an extension of CoreCalc (not released).
27 September 2006: First version of the technical report A Spreadsheet Core Implementation in C# (ITU-TR-2006-91) is available; see below.

Downloads and resources

The report A Spreadsheet Core Implementation in C# (ITU-TR-2006-91, 135 pages).
The report contains an introduction to the spreadsheet computation model, a survey of spreadsheet literature and implementations, a description of the CoreCalc implementation and design alternatives, a detailed presentation of one way to support efficient recalculation, summaries of the work of Iversen's and of Cortes and Hansen, and a list of all known spreadsheet-related patents and patent applications.
- Download ITU-TR-2006-91 in PDF
- Download ITU-TR-2006-91 in PDF, 2 pages to one
CoreCalc code base version 0.5 (zip of a VS2005 solution)
Thomas Iversen's Master's thesis (PDF): Runtime code generation to speed up spreadsheet computations. Thomas has another website with thesis-related files.
Daniel Cortes and Morten Hansen's Master's thesis (PDF): User-defined functions in spreadsheets
Morten Poulsen and Poul Serek's Master's thesis (PDF): Optimized recalculation for spreadsheets with the use of support graph
Slides from a talk given at Oregon State University, 30 October 2006.

Authors and credits

Peter Sestoft; last update 2008-11-30