r8pp

r8pp, an Octave code which carries out some basic linear algebra operations on R8PP matrices (real 64 bit precision positive definite symmetric packed format).

Licensing:

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

Languages:

r8pp is available in a C version and a C++ version and a Fortan90 version and a MATLAB version and an Octave version and a Python version.

Related Data and Programs:

r8pp_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);
• r8ge_print.m, prints an R8GE matrix;
• r8ge_print_some.m, prints some of an R8GE matrix;
• r8pp_det.m, computes the determinant of an R8PP matrix factored by R8PP_FA;
• r8pp_dif2.m, returns the second difference matrix in R8PP format.
• r8pp_fa.m, factors an R8PP matrix;
• r8pp_indicator.m, returns an R8PP indicator matrix;
• r8pp_mv.m, multiplies an R8PP matrix times a vector;
• r8pp_print.m, prints an R8PP matrix;
• r8pp_print_some.m, prints some of an R8PP matrix;
• r8pp_random.m, randomizes an R8PP matrix;
• r8pp_sl.m, solves an R8PP linear system factored by R83P_FA;
• r8pp_to_r8ge.m, copies an R8PP matrix to an R8GE matrix;
• r8pp_zeros.m, zeros an R8PP matrix;
• r8vec_indicator1.m, sets an R8VEC to the indicator1 vector;
• r8vec_print.m, prints an R8VEC;