Release date: Tu 09/25/12.

This material is based upon work supported by the National Science Foundation and the Department of Energy under Grant No. NSF-OCI-1032861, NSF-CCF-00444486, NSF-CNS 0325873, NSF-EIA 0122599, NSF-ACI-0090127, DOE-DE-FC02-01ER25478, DOE-DE-FC02-06ER25768.

LAPACK is a software package provided by Univ. of Tennessee, Univ. of California, Berkeley, Univ. of Colorado Denver and NAG Ltd..

1. Support and questions:

2. LAPACK 3.4.2: What’s new


This is just a BUG FIX release that includes also some improvement the CMAKE build system.

3. External Contributors

  • Ren-cang Li (University of Texas at Arlington)

4. Thanks

Thanks for bug-report/patches/suggestions to:

  • Tim Wentz (CRAY)

  • Shandong Lao (ORACLE)

  • Duncan Po (Mathworks)

  • Alexander Kobotov (INTEL)

  • Joseph Young (SANDIA)

  • Keita Teranishi (CRAY)

  • Mathieu Faverge (ICL - PLASMA)

  • Stephan Ripke (Broad Institute, Boston)

5. Developer list

Principal Investigators
  • Jim Demmel (University of California, Berkeley, USA)

  • Jack Dongarra (University of Tennessee and ORNL, USA)

  • Julien Langou (University of Colorado Denver, USA)

LAPACK developers involved in this release
  • Sven Hammarling (NAG Ltd. and University of Manchester, UK)

  • Igor Kozachenko (University of California, Berkeley, USA)

  • Julie Langou (University of Tennessee, USA)

  • Benjamin Lipshitz (University of California, Berkeley, USA)

  • Rodney James (University of Colorado Denver, USA)

6. More details

  • Modified all of the matrix norm routines. Now, if a matrix contains a NaN, a NaN will be returned for all choices of norm. Previously, if a matrix contained a NaN, the norm routines would not return necessarily a NaN. (They would return regular floating-point numbers in some cases.)

7. Bug Fix