BLAS0
Auxilliary Functions for Basic Linear Algebra Subprograms (BLAS)

BLAS0 is a C++ library which contains auxilliary functions for the Basic Linear Algebra Subprograms (BLAS).

Licensing:

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

Languages:

BLAS0 is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version and a MATLAB version

Related Data and Programs:

BLAS1_C, a C++ library which contains basic linear algebra subprograms (BLAS) for vector-vector operations, using single precision complex arithmetic, by Charles Lawson, Richard Hanson, David Kincaid, Fred Krogh.

BLAS1_D, a C++ library which contains basic linear algebra subprograms (BLAS) for vector-vector operations, using double precision real arithmetic, by Charles Lawson, Richard Hanson, David Kincaid, Fred Krogh.

BLAS1_S, a C++ library which contains basic linear algebra subprograms (BLAS) for vector-vector operations, using single precision real arithmetic, by Charles Lawson, Richard Hanson, David Kincaid, Fred Krogh.

BLAS1_Z, a C++ library which contains basic linear algebra subprograms (BLAS) for vector-vector operations, using double precision complex arithmetic, by Charles Lawson, Richard Hanson, David Kincaid, Fred Krogh.

BLAS2, a C++ library which contains basic linear algebra subprograms (BLAS) for matrix-vector operations;

BLAS3, a C++ library which contains basic linear algebra subprograms (BLAS) for matrix-matrix operations;

Reference:

1. 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:

• blas0.cpp, the source code.
• blas0.hpp, the include file.
• blas0.sh, BASH commands to compile the source code.

Examples and Tests:

• blas0_prb.cpp a sample calling program.
• blas0_prb.sh, BASH commands to compile and run the sample program.
• blas0_prb_output.txt, the output file.

List of Routines:

• C4_UNIFORM_01 returns a unit complex pseudorandom number.
• C8_UNIFORM_01 returns a unit double complex pseudorandom number.
• CABS1 returns the L1 norm of a number.
• CABS2 returns the L2 norm of a number.
• CMACH computes machine parameters for complex arithmetic.
• CSIGN1 is a transfer-of-sign function.
• CSIGN2 is a transfer-of-sign function.
• DMACH computes machine parameters of double precision real arithmetic.
• I4_MAX returns the maximum of two I4's.
• I4_MIN returns the minimum of two I4's.
• LSAME returns TRUE if CA is the same letter as CB regardless of case.
• R4_ABS returns the absolute value of an R4.
• R4_MAX returns the maximum of two R4's.
• R4_SIGN returns the sign of an R4.
• R4_UNIFORM_01 returns a unit pseudorandom R4.
• R4_UNIFORM_AB returns a scaled pseudorandom R4.
• R4MAT_PRINT prints an R4MAT.
• R4MAT_PRINT_SOME prints some of an R4MAT.
• R4MAT_TEST sets up a test matrix.
• R8_ABS returns the absolute value of an R8.
• R8_MAX returns the maximum of two R8's.
• R8_SIGN returns the sign of an R8.
• R8_UNIFORM_01 returns a unit pseudorandom R8.
• R8_UNIFORM_AB returns a scaled pseudorandom R8.
• R8MAT_PRINT prints an R8MAT.
• R8MAT_PRINT_SOME prints some of an R8MAT.
• R8MAT_TEST sets up a test matrix.
• R8VEC_PRINT prints an R8VEC.
• SMACH computes machine parameters of float arithmetic.
• TIMESTAMP prints the current YMDHMS date as a time stamp.
• XERBLA is an error handler for the LAPACK routines.
• ZABS1 returns the L1 norm of a complex .
• ZABS2 returns the L2 norm of a complex .
• ZMACH computes machine parameters for complex arithmetic.
• ZSIGN1 is a complex transfer-of-sign function.
• ZSIGN2 is a complex transfer-of-sign function.

You can go up one level to the C++ source codes.