r8sr

r8sr, an Octave code which carries out linear algebra operations for R8SR matrices (real, 64 bit, diagonal + compressed row offdiagonal format).

Licensing:

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

Languages:

r8sr is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.

Related Data and Programs:

r8sr_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, is a uniform random number generator;
• r8ge_print.m, prints an R8GE matrix;
• r8ge_print_some.m, prints some of an R8GE matrix;
• r8sr_dif2.m, returns an R8SR second difference matrix;
• r8sr_indicator.m, returns an R8SR indicator matrix;
• r8sr_mtv.m, multiplies a vector times an R8SR matrix;
• r8sr_mv.m, multiplies an R8SR matrix times a vector;
• r8sr_print.m, prints an R8SR matrix;
• r8sr_print_some.m, prints some of an R8SR matrix;
• r8sr_random.m, randomizes an R8SR matrix;
• r8sr_to_r8ge.m, copies an R8SR matrix to an R8GE matrix;
• r8sr_zeros.m, zeros an R8SR matrix;
• r8vec_print.m, prints an R8VEC;