r83v
r83v,
a MATLAB code which
carries out some basic linear algebra operations on R83V matrices
(real 64 bit precision tridiagonal three vector format).
Licensing:
The computer code and data files described and made available on this web page
are distributed under
the GNU LGPL license.
Languages:
r83v 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:
r83v_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);
-
r8_uniform_01.m,
returns a pseudorandom R8.
-
r83_indicator.m,
sets up an R83 indicator matrix;
-
r83_print.m,
prints an R83 matrix;
-
r83_print_some.m,
prints some of an R83 matrix;
-
r83v_cg.m,
solves an R83V system using the conjugate gradient method.
-
r83v_copy.m,
copies an R83V matrix.
-
r83v_cr_fa.m,
factors an R83V system using cyclic reduction;
-
r83v_cr_sl.m,
solves an R83V system factored by r83v_cr_fa;
-
r83v_cr_sls.m,
solves several R83V systems factored by r83v_cr_fa;
-
r83v_dif2.m,
returns the second difference matrix as an R83V.
-
r83v_fs.m,
factors and solves a linear system with an R83V matrix.
-
r83v_jac_sl.m,
solves an R83V system using Gauss-Seidel iteration;
-
r83v_indicator.m,
sets up an R83V indicator matrix;
-
r83v_jac_sl.m,
solves an R83V system using Jacobi iteration;
-
r83v_mtv.m,
multiplies a vector times an R83V matrix;
-
r83v_mv.m,
multiplies an R83V matrix times a vector;
-
r83v_print.m,
prints an R83V matrix;
-
r83v_print_some.m,
prints some of an R83V matrix;
-
r83v_random.m,
randomizes an R83V matrix;
-
r83v_res.m,
returns the residual of an R83V linear system.
-
r83v_to_r8ge.m,
copies an R83V matrix to an R8GE matrix;
-
r83v_to_r8vec.m,
copies an R83V matrix to an R8VEC;
-
r83v_transpose.m,
makes a transposed copy of an R83V matrix.
-
r83v_zeros.m,
zeros an R83V matrix;
-
r8ge_indicator.m,
returns the indicator R8GE matrix.
-
r8ge_mtv.m,
multiplies an R8GE matrix transposed times a vector.
-
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;
-
r8ge_to_r83v.m,
converts some of an R8GE to an R83V matrix.
-
r8vec_indicator1.m,
sets an R8VEC to the indicator1 vector;
-
r8vec_print.m,
prints an R8VEC;
-
r8vec_to_r83v.m,
converts an R8VEC to an R83V matrix.
-
r8vec_uniform_01.m,
returns a random R8VEC;
-
r8vec2_print.m,
prints a pair R8VEC's;
Last revised on 18 August 2022.