DGETRS(l)		LAPACK routine (version	1.1)		    DGETRS(l)

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

SYNOPSIS

  SUBROUTINE DGETRS( TRANS, N, NRHS, A,	LDA, IPIV, B, LDB, INFO	)

      CHARACTER	     TRANS

      INTEGER	     INFO, LDA,	LDB, N,	NRHS

      INTEGER	     IPIV( * )

      DOUBLE	     PRECISION A( LDA, * ), B( LDB, * )

PURPOSE
  DGETRS solves	a system of linear equations
     A * X = B	or  A' * X = B with a general N-by-N matrix A using the	LU
  factorization	computed by DGETRF.

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.

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

  A	  (input) DOUBLE PRECISION array, dimension (LDA,N)
	  The factors L	and U from the factorization A = P*L*U as computed by
	  DGETRF.

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

  IPIV	  (input) INTEGER array, dimension (N)
	  The pivot indices from DGETRF; for 1<=i<=N, row i of the matrix was
	  interchanged 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