The design of core 2: A library for exact numeric computation in geometry and algebra

Jihun Yu, Chee Yap, Zilin Du, Sylvain Pion, Hervé Brönnimann

Research output: Chapter in Book/Report/Conference proceedingConference contribution


There is a growing interest in numeric-algebraic techniques in the computer algebra community as such techniques can speed up many applications. This paper is concerned with one such approach called Exact Numeric Computation (ENC). The ENC approach to algebraic number computation is based on iterative verified approximations, combined with constructive zero bounds. This paper describes Core 2, the latest version of the Core Library, a package designed for applications such as non-linear computational geometry. The adaptive complexity of ENC combined with filters makes such libraries practical. Core 2 smoothly integrates our algebraic ENC subsystem with transcendental functions with ε-accurate comparisons. This paper describes how the design of Core 2 addresses key software issues such as modularity, extensibility, efficiency in a setting that combines algebraic and transcendental elements. Our redesign preserves the original goals of the Core Library, namely, to provide a simple and natural interface for ENC computation to support rapid prototyping and exploration. We present examples, experimental results, and timings for our new system, released as Core Library 2.0.

Original languageEnglish (US)
Title of host publicationMathematical Software, ICMS 2010 - Third International Congress on Mathematical Software, Proceedings
Number of pages21
StatePublished - 2010
Event3rd International Congress on Mathematical Software, ICMS 2010 - Kobe, Japan
Duration: Sep 13 2010Sep 17 2010

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume6327 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other3rd International Congress on Mathematical Software, ICMS 2010

ASJC Scopus subject areas

  • Theoretical Computer Science
  • General Computer Science


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