#
r83

**r83**,
a FORTRAN90 code which
carries out some basic linear algebra operations on R83 matrices
(real 64 bit precision tridiagonal 3xN format).

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Licensing:

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

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Languages:

**r83** is available in
a C version and
a C++ version and
a FORTRAN90 version and
a MATLAB version and
a Python version.

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Related Data and Programs:

r83_test

R8COL,
a FORTRAN90 code which
contains utility routines for R8COL's, that is,
double precision real MxN arrays, considered as N column vectors,
each of length M. The data may be thought of as a matrix of
multiple columns, and many operations will be carried out columnwise.

R8GE,
a FORTRAN90 code which
contains linear algebra routines for R8GE matrices
(real, 64 bit, General format).

R8LT,
a FORTRAN90 code which
contains linear algebra routines for R8UT matrices
(real, 64 bit, lower triangular format).

R8ROW,
a FORTRAN90 code which
contains utility routines for R8ROW's, that is,
double precision real MxN arrays, considered as M row vectors,
each of length N. The data may be thought of as a matrix of
multiple rows, and many operations will be carried out rowwise.

R8UT,
a FORTRAN90 code which
contains linear algebra routines for R8UT matrices
(real, 64 bit, upper triangular format).

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Source Code:

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Last revised on 28 January 2020.
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