# Routines for Fast Solution of Interval Systems

- ?trtrs
  Solves a triangular system of interval linear equations by backward substitution procedure.
- ?gegas
  Solves a system of interval linear equations by interval Gauss method.
- ?gehss
  Solves a system of interval linear equations by interval Householder method.
- ?gekws
  Solves a system of interval linear equations by Krawczyk iteration method.
- ?gegss
  Solves a system of interval linear equations by interval Gauss-Seidel iteration.
- ?gehbs
  Solves a system of interval linear equations by Hansen-Bliek-Rohn procedure.

Parent topic: Interval Linear Solvers