DSPTRS(l)		LAPACK routine (version	1.1)		    DSPTRS(l)

NAME
  DSPTRS - solve a system of linear equations A*X = B with a real symmetric
  matrix A stored in packed format using the factorization A = U*D*U**T	or A
  = L*D*L**T computed by DSPTRF

SYNOPSIS

  SUBROUTINE DSPTRS( UPLO, N, NRHS, AP,	IPIV, B, LDB, INFO )

      CHARACTER	     UPLO

      INTEGER	     INFO, LDB,	N, NRHS

      INTEGER	     IPIV( * )

      DOUBLE	     PRECISION AP( * ),	B( LDB,	* )

PURPOSE
  DSPTRS solves	a system of linear equations A*X = B with a real symmetric
  matrix A stored in packed format using the factorization A = U*D*U**T	or A
  = L*D*L**T computed by DSPTRF.

ARGUMENTS

  UPLO	  (input) CHARACTER*1
	  Specifies whether the	details	of the factorization are stored	as an
	  upper	or lower triangular matrix.  = 'U':  Upper triangular, form
	  is A = U*D*U**T;
	  = 'L':  Lower	triangular, form is A =	L*D*L**T.

  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.

  AP	  (input) DOUBLE PRECISION array, dimension (N*(N+1)/2)
	  The block diagonal matrix D and the multipliers used to obtain the
	  factor U or L	as computed by DSPTRF, stored as a packed triangular
	  matrix.

  IPIV	  (input) INTEGER array, dimension (N)
	  Details of the interchanges and the block structure of D as deter-
	  mined	by DSPTRF.

  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