--- rpl/lapack/lapack/dpstf2.f 2014/01/27 09:28:26 1.11
+++ rpl/lapack/lapack/dpstf2.f 2023/08/07 08:39:05 1.17
@@ -1,25 +1,25 @@
-*> \brief \b DPSTF2 computes the Cholesky factorization with complete pivoting of a real symmetric or complex Hermitian positive semi-definite matrix.
+*> \brief \b DPSTF2 computes the Cholesky factorization with complete pivoting of a real symmetric positive semidefinite matrix.
*
* =========== DOCUMENTATION ===========
*
-* Online html documentation available at
-* http://www.netlib.org/lapack/explore-html/
+* Online html documentation available at
+* http://www.netlib.org/lapack/explore-html/
*
*> \htmlonly
-*> Download DPSTF2 + dependencies
-*>
-*> [TGZ]
-*>
-*> [ZIP]
-*>
+*> Download DPSTF2 + dependencies
+*>
+*> [TGZ]
+*>
+*> [ZIP]
+*>
*> [TXT]
-*> \endhtmlonly
+*> \endhtmlonly
*
* Definition:
* ===========
*
* SUBROUTINE DPSTF2( UPLO, N, A, LDA, PIV, RANK, TOL, WORK, INFO )
-*
+*
* .. Scalar Arguments ..
* DOUBLE PRECISION TOL
* INTEGER INFO, LDA, N, RANK
@@ -29,7 +29,7 @@
* DOUBLE PRECISION A( LDA, * ), WORK( 2*N )
* INTEGER PIV( N )
* ..
-*
+*
*
*> \par Purpose:
* =============
@@ -121,29 +121,27 @@
*> < 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:
* ========
*
-*> \author Univ. of Tennessee
-*> \author Univ. of California Berkeley
-*> \author Univ. of Colorado Denver
-*> \author NAG Ltd.
-*
-*> \date September 2012
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
*
*> \ingroup doubleOTHERcomputational
*
* =====================================================================
SUBROUTINE DPSTF2( UPLO, N, A, LDA, PIV, RANK, TOL, WORK, INFO )
*
-* -- LAPACK computational routine (version 3.4.2) --
+* -- LAPACK computational routine --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-* September 2012
*
* .. Scalar Arguments ..
DOUBLE PRECISION TOL
@@ -216,7 +214,7 @@
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 170