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Is the quality of numerical subroutine code improving?

Hopkins, Tim (1997) Is the quality of numerical subroutine code improving? In: Arge, Erlend and Bruaset, Are Magnus and Langtangen, Hans Petter and Math, Norwegian Res and Council, Norway, eds. Modern Software Tools for Scientific Computing. Birkhauser Boston, Boston, pp. 311-324. ISBN 978-1-4612-7368-4. E-ISBN 978-1-4612-1986-6. (doi:10.1007/978-1-4612-1986-6_14) (KAR id:18112)


We begin by using a software metric tool to generate a number of software complexity measures and we investigate how these values may be used to determine subroutines which are likely to be of substandard quality. Following this we look at how these metric values have changed over the years. First we consider a number of freely available Fortran libraries (Eispack, Linpack and Lapack) which have been constructed by teams. In order to ensure a fair comparison we use a restructuring tool to transform original Fortran 66 code into Fortran 77. We then consider the Fortran codes from the Collected Algorithms from the ACM (CALGO) to see whether we can detect the same trends in software written by the general numerical community. Our measurements show that although the standard of code in the freely available libraries does appear to have improved over time these libraries still contain routines which are effectively unmaintainable and untestable. Applied to the CALGO codes the metrics indicate a very conservative approach to software engineering and there is no evidence of improvement, during the last twenty years, in the qualities under discussion.

Item Type: Book section
DOI/Identification number: 10.1007/978-1-4612-1986-6_14
Additional information: Conference Information: International Workshop on Modern Software Tools for Scientific Computing OSLO, NORWAY, SEP 16-18, 1996 SINTEF Appl Math; Univ Oslo, Dept Informat & Math; Norwegian Res Council Norway
Uncontrolled keywords: Software Metrics; Fortran Code; Program Unit; Cyclomatic Complexity; Path Count
Subjects: Q Science > QA Mathematics (inc Computing science) > QA 76 Software, computer programming,
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Computing
Depositing User: M.A. Ziai
Date Deposited: 08 Jun 1914 09:49 UTC
Last Modified: 27 Nov 2023 09:21 UTC
Resource URI: (The current URI for this page, for reference purposes)

University of Kent Author Information

Hopkins, Tim.

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