SUBROUTINE CGTSL(N,C,D,E,B,INFO)
C***BEGIN PROLOGUE  CGTSL
C***DATE WRITTEN   780814   (YYMMDD)
C***REVISION DATE  820801   (YYMMDD)
C***CATEGORY NO.  D2C2A
C***KEYWORDS  COMPLEX,LINEAR ALGEBRA,LINPACK,MATRIX,SOLVE,TRIDIAGONAL
C***AUTHOR  DONGARRA, J., (ANL)
C***PURPOSE  Solves a GENERAL COMPLEX TRIDIAGONAL system of equations.
C***DESCRIPTION
C
C     CGTSL given a general tridiagonal matrix and a right hand
C     side will find the solution.
C
C     On Entry
C
C        N       INTEGER
C                is the order of the tridiagonal matrix.
C
C        C       COMPLEX(N)
C                is the subdiagonal of the tridiagonal matrix.
C                C(2) through C(N) should contain the subdiagonal.
C                On output C is destroyed.
C
C        D       COMPLEX(N)
C                is the diagonal of the tridiagonal matrix.
C                On output D is destroyed.
C
C        E       COMPLEX(N)
C                is the superdiagonal of the tridiagonal matrix.
C                E(1) through E(N-1) should contain the superdiagonal.
C                On output E is destroyed.
C
C        B       COMPLEX(N)
C                is the right hand side vector.
C
C     On Return
C
C        B       is the solution vector.
C
C        INFO    INTEGER
C                = 0 normal value.
C                = K if the K-th element of the diagonal becomes
C                    exactly zero.  The subroutine returns when
C                    this is detected.
C
C     LINPACK.  This version dated 08/14/78 .
C     Jack Dongarra, Argonne National Laboratory.
C
C     No Externals
C     Fortran ABS,AIMAG,REAL
C***REFERENCES  DONGARRA J.J., BUNCH J.R., MOLER C.B., STEWART G.W.,
C                 *LINPACK USERS  GUIDE*, SIAM, 1979.
C***ROUTINES CALLED  (NONE)
C***END PROLOGUE  CGTSL