--- rpl/lapack/lapack/dpstrf.f	2011/11/21 20:43:02	1.6
+++ rpl/lapack/lapack/dpstrf.f	2016/08/27 15:34:36	1.12
@@ -1,4 +1,5 @@
-*> \brief \b DPSTRF
+*> \brief \b DPSTRF computes the Cholesky factorization with complete pivoting of a real symmetric positive semidefinite matrix.
+*
 *
 *  =========== DOCUMENTATION ===========
 *
@@ -121,8 +122,9 @@
 *>          < 0: If INFO = -K, the K-th argument had an illegal value,
 *>          = 0: algorithm completed successfully, and
 *>          > 0: the matrix A is either rank deficient with computed rank
-*>               as returned in RANK, or is indefinite.  See Section 7 of
-*>               LAPACK Working Note #161 for further information.
+*>               as returned in RANK, or is not positive semidefinite. See
+*>               Section 7 of LAPACK Working Note #161 for further
+*>               information.
 *> \endverbatim
 *
 *  Authors:
@@ -133,17 +135,17 @@
 *> \author Univ. of Colorado Denver 
 *> \author NAG Ltd. 
 *
-*> \date November 2011
+*> \date November 2015
 *
 *> \ingroup doubleOTHERcomputational
 *
 *  =====================================================================
       SUBROUTINE DPSTRF( UPLO, N, A, LDA, PIV, RANK, TOL, WORK, INFO )
 *
-*  -- LAPACK computational routine (version 3.4.0) --
+*  -- LAPACK computational routine (version 3.6.0) --
 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-*     November 2011
+*     November 2015
 *
 *     .. Scalar Arguments ..
       DOUBLE PRECISION   TOL
@@ -230,7 +232,7 @@
                AJJ = A( PVT, PVT )
             END IF
          END DO
-         IF( AJJ.EQ.ZERO.OR.DISNAN( AJJ ) ) THEN
+         IF( AJJ.LE.ZERO.OR.DISNAN( AJJ ) ) THEN
             RANK = 0
             INFO = 1
             GO TO 200