r8ss
r8ss
a MATLAB code which
carries out some basic linear algebra operations on R8SS matrices
(real 64 bit precision symmetric skyline format).
Licensing:
The computer code and data files described and made available on this web page
are distributed under
the GNU LGPL license.
Languages:
r8ss is available in
a C version and
a C++ version and
a FORTRAN90 version and
a MATLAB version and
a Python version
Related Data and Programs:
r8ss_test
linear_algebra,
MATLAB codes which
carry out various linear algebra operations for matrices
stored in a variety of formats.
Source Code:

i4_log_10.m,
returns the integer part of the logarithm base 10 of abs(X);

i4_uniform_ab.m,
returns a scaled uniform I4 between A and B.

r8_uniform_01.m,
returns a random R8 value;

r8ge_mv.m,
multiplies an R8GE matrix times a vector;

r8ge_print.m,
prints an R8GE matrix;

r8ge_print_some.m,
prints some of an R8GE matrix;

r8ss_dif2.m,
sets up an R8SS second difference matrix;

r8ss_indicator.m,
sets up an R8SS indicator matrix;

r8ss_mv.m,
multiplies an R8SS matrix times a vector;

r8ss_print.m,
prints an R8SS matrix;

r8ss_print_some.m,
prints some of an R8SS matrix;

r8ss_random.m,
randomizes an R8SS matrix;

r8ss_to_r8ge.m,
copies an R8SS matrix to an R8GE matrix;

r8ss_zeros.m,
zeros an R8SS matrix;

r8vec_indicator1.m,
sets an R8VEC to the indicator1 vector;

r8vec_print.m,
prints an R8VEC;

r8vec2_print.m,
prints a pair of R8VEC's.
Last revised on 29 August 2022.