BLAS0
Auxilliary Functions for Basic Linear Algebra Subprograms (BLAS)

BLAS0 is a FORTRAN90 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 FORTRAN90 version and a MATLAB version

Related Data and Programs:

BLAS1_C, a FORTRAN90 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 FORTRAN90 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 FORTRAN90 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 FORTRAN90 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.

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.f90, the source code.

Examples and Tests:

• blas0_test.f90, a sample calling program.
• blas0_test.txt, the output file.

List of Routines:

• C4_UNIFORM_01 returns a unit pseudorandom C4.
• C4MAT_PRINT prints a C4MAT.
• C4MAT_PRINT_SOME prints some of a C4MAT.
• C4MAT_TEST sets up a test matrix.
• C4MAT_TEST_INVERSE returns the inverse of the test matrix.
• C8_UNIFORM_01 returns a unit pseudorandom C8.
• C8MAT_PRINT prints a C8MAT.
• C8MAT_PRINT_SOME prints some of a C8MAT.
• C8MAT_TEST sets up a test matrix.
• C8MAT_TEST_INVERSE returns the inverse of the test matrix.
• CABS1 returns the L1 norm of a single precision complex number.
• CABS2 returns the L2 norm of a single precision complex number.
• CMACH computes machine parameters for single precision complex arithmetic.
• CSIGN1 is a single precision complex transfer-of-sign function.
• CSIGN2 is a single precision complex transfer-of-sign function.
• DMACH computes machine parameters for double precision arithmetic.
• LSAME returns TRUE if CA is the same letter as CB regardless of case.
• R4_ABS returns the absolute value of an R4.
• 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.
• R4VEC_PRINT prints an R4VEC.
• R8_ABS returns the absolute value of an R8.
• 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 for single precision 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 double precision complex number.
• ZABS2 returns the L2 norm of a double precision complex number.
• ZMACH computes machine parameters for double precision complex arithmetic.
• ZSIGN1 is a double precision complex transfer-of-sign function.
• ZSIGN2 is a double precision complex transfer-of-sign function.

You can go up one level to the FORTRAN90 source codes.