SPOTRI(l)		LAPACK routine (version	1.1)		    SPOTRI(l)

NAME
  SPOTRI - compute the inverse of a real symmetric positive definite matrix A
  using	the Cholesky factorization A = U**T*U or A = L*L**T computed by
  SPOTRF

SYNOPSIS

  SUBROUTINE SPOTRI( UPLO, N, A, LDA, INFO )

      CHARACTER	     UPLO

      INTEGER	     INFO, LDA,	N

      REAL	     A(	LDA, * )

PURPOSE
  SPOTRI computes the inverse of a real	symmetric positive definite matrix A
  using	the Cholesky factorization A = U**T*U or A = L*L**T computed by
  SPOTRF.

ARGUMENTS

  UPLO	  (input) CHARACTER*1
	  = 'U':  Upper	triangle of A is stored;
	  = 'L':  Lower	triangle of A is stored.

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

  A	  (input/output) REAL array, dimension (LDA,N)
	  On entry, the	triangular factor U or L from the Cholesky factoriza-
	  tion A = U**T*U or A = L*L**T, as computed by	SPOTRF.	 On exit, the
	  upper	or lower triangle of the (symmetric) inverse of	A, overwrit-
	  ing the input	factor U or L.

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

  INFO	  (output) INTEGER
	  = 0:	successful exit
	  < 0:	if INFO	= -i, the i-th argument	had an illegal value
	  > 0:	if INFO	= i, the (i,i) element of the factor U or L is zero,
	  and the inverse could	not be computed.