BLAS2_D
Double Precision Real Basic Linear Algebra Subprograms - Level 2

BLAS2_D, a MATLAB library which constitutes the Level 2 Basic Linear Algebra Subprograms (BLAS), for matrix-vector operations, using double precision real arithmetic.

The BLAS are a small core library of linear algebra utilities, which can be highly optimized for various architectures.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

BLAS2_D is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version.

Related Data and Programs:

BLAS0, a MATLAB library which contains auxilliary functions for the Basic Linear Algebra Subprograms (BLAS).

BLAS1_C, a MATLAB library which contains basic linear algebra routines for vector-vector operations, using single precision complex arithmetic.

BLAS1_D, a MATLAB library which contains basic linear algebra routines for vector-vector operations, using double precision real arithmetic.

BLAS1_S, a MATLAB library which contains basic linear algebra routines for vector-vector operations, using single precision real arithmetic.

BLAS1_Z, a MATLAB library which contains basic linear algebra routines for vector-vector operations, using double precision complex arithmetic.

blas2_d_test

Reference:

1. Edward Anderson, Zhaojun Bai, Christian Bischof, Susan Blackford, James Demmel, Jack Dongarra, Jeremy Du Croz, Anne Greenbaum, Sven Hammarling, Alan McKenney, Danny Sorensen,
   LAPACK User's Guide,
   Third Edition,
   SIAM, 1999,
   ISBN: 0898714478,
   LC: QA76.73.F25L36.
2. Thomas Coleman, Charles vanLoan,
   Handbook for Matrix Computations,
   SIAM, 1988,
   ISBN13: 978-0-898712-27-8,
   LC: QA188.C65.
3. Jack Dongarra, Jim Bunch, Cleve Moler, Pete Stewart,
   LINPACK User's Guide,
   SIAM, 1979,
   ISBN13: 978-0-898711-72-1,
   LC: QA214.L56.
4. Charles Lawson, Richard Hanson, David Kincaid, Fred Krogh,
   Algorithm 539: Basic Linear Algebra Subprograms for Fortran Usage,
   ACM Transactions on Mathematical Software,
   Volume 5, Number 3, September 1979, pages 308-323.

Source Code:

• dgbmv.m, computes y = alpha * A * x + beta * y and related operations for a general band matrix A.
• dgemv.m, computes y = alpha * A * x + beta * y and related operations for a general matrix A.
• dger.m, computes A := alpha*x*y' + A.
• dsbmv.m, computes y = alpha * A * x + beta * y and related operations for a symmetric band matrix A.
• dspmv.m, computes y = alpha * A * x + beta * y and related operations for a symmetric packed band matrix A.
• dspr.m, computes A = A + alpha*x*x' for a symmetric packed band matrix A.
• dtrmv.m, computes x: = A*x or x = A'*x for a triangular matrix A.