BLAS1_S a FORTRAN90 library which constitutes the Level 1 Basic Linear Algebra Subprograms (BLAS), for vector-vector operations using single precision real arithmetic, by Charles Lawson, Richard Hanson, David Kincaid, Fred Krogh.
The BLAS are a small core library of linear algebra utilities, which can be highly optimized for various architectures. Software that relies on the BLAS is thus highly portable, and will typically run very efficiently.
The Level 1 BLAS are primarily for use in vector operations. In certain cases, they may also be used to operate on the rows or columns of a two-dimensional array.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
BLAS1_S is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version and a MATLAB version.
BLAS, a FORTRAN90 library which contains the Basic Linear Algebra Subprograms (BLAS) for level 1 (vector-vector operations), level 2 (matrix-vector operations) and level 3 (matrix-matrix operations), for single precision real arithmetic, double precision real arithmetic, single precision complex arithmetic, and double precision complex arithmetic.
GSL, a C++ library which includes an implementation of the BLAS1 routines.
LAPACK_EXAMPLES, a FORTRAN90 program which demonstrates the use of the LAPACK linear algebra library.
LINPACK_S, a FORTRAN90 library which is a linear algebra package using single precision real arithmetic.
NMS, a FORTRAN90 library which includes BLAS1.
SLATEC, a FORTRAN90 library which includes BLAS1.
Original FORTRAN77 version by Charles Lawson, Richard Hanson, David Kincaid, Fred Krogh. FORTRAN90 version by John Burkardt.
You can go up one level to the FORTRAN90 source codes.