Skip to main content

Restructuring the BLAS Level-1 Routine for Computing the Modified Givens Transformation

Hopkins, Tim (1997) Restructuring the BLAS Level-1 Routine for Computing the Modified Givens Transformation. ACM SIGNUM, 32 (4). pp. 2-14. ISSN 0163-5778. (doi:10.1145/289251.289253) (KAR id:21591)

Language: English
Download (637kB)
[thumbnail of Restructuring_the_BLAS_Level_1_Routine_for_Computing_the.pdf]
This file may not be suitable for users of assistive technology.
Request an accessible format
Official URL:


We look at how both logical restructuring and improvements available from successive versions of Fortran allow us to reduce the complexity (measured by a number of the commonly used software metrics) of the Level 1 BLAS code used to compute the modified Givens transformation. With these reductions in complexity we claim that we have improved both the maintainability and clarity of the code; in addition, we report a fix to a minor problem with the original code. The performance of two commercial Fortran restructuring tools is also reported.

Item Type: Article
DOI/Identification number: 10.1145/289251.289253
Additional information: This is the published version of the UKC Computing Laboratory report 1-98, ''Restructuring the BLAS Level 1 routine for computing the modified Givens transformation''.
Uncontrolled keywords: Software Metrics, Fortran 90, Re-engineering software, Software Quality,Legacy Code
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: Mark Wheadon
Date Deposited: 24 Aug 2009 16:09 UTC
Last Modified: 16 Nov 2021 09:59 UTC
Resource URI: (The current URI for this page, for reference purposes)
  • Depositors only (login required):


Downloads per month over past year