--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libcruft/lapack/dpotri.f	Fri May 06 16:26:59 2005 +0000
@@ -0,0 +1,97 @@
+      SUBROUTINE DPOTRI( UPLO, N, A, LDA, INFO )
+*
+*  -- LAPACK routine (version 3.0) --
+*     Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
+*     Courant Institute, Argonne National Lab, and Rice University
+*     March 31, 1993
+*
+*     .. Scalar Arguments ..
+      CHARACTER          UPLO
+      INTEGER            INFO, LDA, N
+*     ..
+*     .. Array Arguments ..
+      DOUBLE PRECISION   A( LDA, * )
+*     ..
+*
+*  Purpose
+*  =======
+*
+*  DPOTRI 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 DPOTRF.
+*
+*  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) DOUBLE PRECISION array, dimension (LDA,N)
+*          On entry, the triangular factor U or L from the Cholesky
+*          factorization A = U**T*U or A = L*L**T, as computed by
+*          DPOTRF.
+*          On exit, the upper or lower triangle of the (symmetric)
+*          inverse of A, overwriting 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.
+*
+*  =====================================================================
+*
+*     .. External Functions ..
+      LOGICAL            LSAME
+      EXTERNAL           LSAME
+*     ..
+*     .. External Subroutines ..
+      EXTERNAL           DLAUUM, DTRTRI, XERBLA
+*     ..
+*     .. Intrinsic Functions ..
+      INTRINSIC          MAX
+*     ..
+*     .. Executable Statements ..
+*
+*     Test the input parameters.
+*
+      INFO = 0
+      IF( .NOT.LSAME( UPLO, 'U' ) .AND. .NOT.LSAME( UPLO, 'L' ) ) THEN
+         INFO = -1
+      ELSE IF( N.LT.0 ) THEN
+         INFO = -2
+      ELSE IF( LDA.LT.MAX( 1, N ) ) THEN
+         INFO = -4
+      END IF
+      IF( INFO.NE.0 ) THEN
+         CALL XERBLA( 'DPOTRI', -INFO )
+         RETURN
+      END IF
+*
+*     Quick return if possible
+*
+      IF( N.EQ.0 )
+     $   RETURN
+*
+*     Invert the triangular Cholesky factor U or L.
+*
+      CALL DTRTRI( UPLO, 'Non-unit', N, A, LDA, INFO )
+      IF( INFO.GT.0 )
+     $   RETURN
+*
+*     Form inv(U)*inv(U)' or inv(L)'*inv(L).
+*
+      CALL DLAUUM( UPLO, N, A, LDA, INFO )
+*
+      RETURN
+*
+*     End of DPOTRI
+*
+      END