Linear Systems with Almost Tridiagonal Matrix

TOMS470 is a FORTRAN77 library which implements ACM TOMS algorithm 470, for solving a linear system with an almost tridiagonal matrix.

The text of many ACM TOMS algorithms is available online through ACM: or NETLIB:


TOMS470 is available in a FORTRAN77 version.


  1. Milan Kubicek,
    Algorithm 470: Linear Systems with Almost Tridiagonal Matrix,
    Communications of the ACM,
    December 1973, Volume 16, Number 12, pages 760-761.

Source Code:

Examples and Tests:

List of Routines:

You can go up one level to the FORTRAN77 source codes.

Last revised on 10 December 2005.