r8ci
r8ci,
a MATLAB code which
carries out some basic linear algebra operations on R8CI matrices
(real 64 bit precision circulant format).
Licensing:
The computer code and data files described and made available on this web page
are distributed under
the GNU LGPL license.
Languages:
r8ci 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:
r8ci_test
linear_algebra,
MATLAB codes which
carry out various linear algebra operations for matrices
stored in a variety of formats.
Source Code:

c8_le_l2.m,
( X <= Y ) for C8 values and the L2 norm;

c8vec_print.m,
prints a C8 vector.

c8vec_sort_a_l2.m,
sorts a C8 vector by L2 norm;

c8vec_unity.m,
returns the N roots of unity;

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

r8_uniform_01.m,
is a uniform random number generator;

r8ci_det.m,
returns the determinant of an R8CI matrix;

r8ci_dif2.m,
returns the periodic second difference matrix in R8CI form.

r8ci_eval.m,
returns the eigenvalues of an R8CI matrix;

r8ci_indicator.m,
returns an R8CI indicator matrix;

r8ci_mtv.m,
multiplies a vector times an R8CI matrix;

r8ci_mv.m,
multiplies an R8CI matrix times a vector;

r8ci_print.m,
prints an R8CI matrix;

r8ci_print_some.m,
prints some of an R8CI matrix;

r8ci_random.m,
randomizes an R8CI matrix;

r8ci_sl.m,
solves an R8CI linear system;

r8ci_to_r8ge.m,
copies an R8CI matrix to an R8GE matrix;

r8ci_zeros.m,
zeros an R8CI matrix;

r8ge_print.m,
prints an R8GE matrix;

r8ge_print_some.m,
prints some of an R8GE matrix;

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

r8vec_print.m,
prints an R8VEC;

sort_heap_external.m,
external sorts a list of items into ascending order;
Last revised on 22 August 2022.