Linear Algebra Utilities

**R8UT**,
a C library which
carries out some basic linear algebra operations on R8UT matrices
(real 64 bit precision upper triangular format).

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

**R8UT** is available in
a C version and
a C++ version and
a FORTRAN90 version and
a MATLAB version and
a Python version

R83, a C library which contains linear algebra routines for R83 matrices (real, 64 bit, tridiagonal 3xN format).

R83S, a C library which contains linear algebra routines for R83S matrices (real, 64 bit, tridiagonal scalar format).

R83V, a C library which contains linear algebra routines for R83V matrices (real, 64 bit, tridiagonal three vector format).

R85, a C library which contains linear algebra routines for R85 matrices (real, 64 bit, pentadiagonal format).

R8BB, a C library which contains linear algebra routines for R8BB matrices (real, 64 bit, border banded format).

R8BLT, a C library which contains linear algebra routines for R8BLT matrices (real, 64 bit, band lower triangular format).

R8BTO, a C library which contains linear algebra routines for R8BTO matrices (real, 64 bit, block Toeplitz format).

R8BUT, a C library which contains linear algebra routines for R8BUT matrices (real, 64 bit, band upper triangular format).

R8CB, a C library which contains linear algebra routines for R8CB matrices (real, 64 bit, Compressed Band format).

R8CBB, a C library which contains linear algebra routines for R8CBB matrices (real, 64 bit, Compressed Border Banded format).

R8CC, a C library which contains linear algebra routines for R8CC matrices (real, 64 bit, Compressed Column (Colptr,Row,Value) format).

R8GD, a C library which contains linear algebra routines for R8GD matrices (real, 64 bit, general diagonal format).

R8GE, a C library which contains linear algebra routines for R8GE matrices (real, 64 bit, General format).

R8LT, a C library which contains linear algebra routines for R8LT matrices (real, 64 bit, lower triangular format).

R8LTT, a C library which contains linear algebra routines for R8LTT matrices (real, 64 bit, lower triangular Toeplitz format).

R8NCF, a C library which contains linear algebra routines for R8NCF matrices (real, 64 bit, nonsymmetric coordinate format).

R8PBL, a C library which contains linear algebra routines for R8PBL matrices (real, 64 bit, positive definite symmetric band lower format).

R8PO, a C library which contains linear algebra routines for R8PO matrices (real, 64 bit, positive definite symmetric format).

R8RI, a C library which contains linear algebra routines for R8RI matrices (real, 64 bit, row indexed format).

R8S3, a C library which contains linear algebra routines for R8S3 matrices (real, 64 bit, SLAP Triad (I,J,AIJ) format).

R8SD, a C library which contains linear algebra routines for R8SD matrices (real, 64 bit, symmetric diagonal format).

R8SP, a C library which contains linear algebra routines for R8SP matrices (real, 64 bit, SLAP Triad (I,J,AIJ) format).

R8SS, a C library which carries out linear algebra operations for R8SS matrices (real, 64 bit, symmetric skyline format).

R8STO, a C library which contains linear algebra routines for R8STO matrices (real, 64 bit, symmetric Toeplitz N format).

R8TO, a C library which contains linear algebra routines for R8TO matrices (real, 64 bit, Toeplitz 2*N-1 format).

R8UTT, a C library which contains linear algebra routines for R8UTT matrices (real, 64 bit, upper triangular Toeplitz format).

R8VM, a C library which contains linear algebra routines for R8VM matrices (real, 64 bit, Vandermonde format).