An introduction to the use of LAPACK

Abstract

LAPACK (Linear Algebra Package) is a collection of FORTRAN 77 subroutines that are useful in the solution of the mathematical problems related to mathematical modeling and belonging to the field of numerical linear algebra. The LAPACK subroutines are based on simpler subroutines called BLAS (Basic Linear Algebra Subprograms). In these notes, we introduce LAPACK and numerical linear algebra, explain in detail the more common LAPACK subroutines, illustrate their use by selected examples and all the time we encourage the readers to use quality software available in the public domain.