r8utp

r8utp, an Octave code which carries out some basic linear algebra operations on R8UTP matrices (real 64 bit precision upper triangular 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:

r8utp 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:

r8utp_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_to_r8utp.m, converts an R8GE matrix to an R8UTP matrix;
• r8utp_det.m, computes the determinant of an R8UTP matrix;
• r8utp_indicator.m, returns an R8UTP indicator matrix;
• r8utp_print.m, prints an R8UTP matrix;
• r8utp_print_some.m, prints some of an R8UTP matrix;
• r8utp_random.m, randomizes an R8UTP matrix;
• r8utp_size.m, determines storage needed for an R8UTP matrix;
• r8utp_to_r8ge.m, converts an R8UTP matrix to an R8GE matrix;
• r8utp_zeros.m, zeros out space for an R8UTP matrix.