SLATEC Routines --- TRIX ---

*DECK TRIX
      SUBROUTINE TRIX (IDEGBR, IDEGCR, M, A, B, C, Y, TCOS, D, W)
C***BEGIN PROLOGUE  TRIX
C***SUBSIDIARY
C***PURPOSE  Subsidiary to GENBUN
C***LIBRARY   SLATEC
C***TYPE      SINGLE PRECISION (TRIX-S, CMPTRX-C)
C***AUTHOR  (UNKNOWN)
C***DESCRIPTION
C
C     Subroutine to solve a system of linear equations where the
C     coefficient matrix is a rational function in the matrix given by
C     TRIDIAGONAL  ( . . . , A(I), B(I), C(I), . . . ).
C
C***SEE ALSO  GENBUN
C***ROUTINES CALLED  (NONE)
C***REVISION HISTORY  (YYMMDD)
C   801001  DATE WRITTEN
C   891214  Prologue converted to Version 4.0 format.  (BAB)
C   900402  Added TYPE section.  (WRB)
C***END PROLOGUE  TRIX