```DGBTRS(l)		LAPACK routine (version	1.1)		    DGBTRS(l)

NAME
DGBTRS - solve a system of linear equations  A * X = B or A' * X = B with a
general band matrix A	using the LU factorization computed by DGBTRF

SYNOPSIS

SUBROUTINE DGBTRS( TRANS, N, KL, KU, NRHS, AB, LDAB, IPIV, B,	LDB, INFO )

CHARACTER	     TRANS

INTEGER	     INFO, KL, KU, LDAB, LDB, N, NRHS

INTEGER	     IPIV( * )

DOUBLE	     PRECISION AB( LDAB, * ), B( LDB, *	)

PURPOSE
DGBTRS solves	a system of linear equations
A * X = B	or  A' * X = B with a general band matrix A using the LU fac-
torization computed by DGBTRF.

ARGUMENTS

TRANS	  (input) CHARACTER*1
Specifies the	form of	the system of equations.  = 'N':  A * X	= B
(No transpose)
= 'T':  A'* X	= B  (Transpose)
= 'C':  A'* X	= B  (Conjugate	transpose = Transpose)

N	  (input) INTEGER
The order of the matrix A.  N	>= 0.

KL	  (input) INTEGER
The number of	subdiagonals within the	band of	A.  KL >= 0.

KU	  (input) INTEGER
The number of	superdiagonals within the band of A.  KU >= 0.

NRHS	  (input) INTEGER
The number of	right hand sides, i.e.,	the number of columns of the
matrix B.  NRHS >= 0.

AB	  (input) DOUBLE PRECISION array, dimension (LDAB,N)
Details of the LU factorization of the band matrix A,	as computed
by DGBTRF.  U	is stored as an	upper triangular band matrix with
KL+KU	superdiagonals in rows 1 to KL+KU+1, and the multipliers used
during the factorization are stored in rows KL+KU+2 to 2*KL+KU+1.

LDAB	  (input) INTEGER
The leading dimension	of the array AB.  LDAB >= 2*KL+KU+1.

IPIV	  (input) INTEGER array, dimension (N)
The pivot indices; for 1 <= i	<= N, row i of the matrix was inter-
changed with row IPIV(i).

B	  (input/output) DOUBLE	PRECISION array, dimension (LDB,NRHS)
On entry, the	right hand side	matrix B.  On exit, the	solution
matrix X.

LDB	  (input) INTEGER
The leading dimension	of the array B.	 LDB >=	max(1,N).

INFO	  (output) INTEGER
= 0:	successful exit
< 0: if INFO = -i, the i-th argument had an illegal value

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