--- rpl/lapack/lapack/dlasd6.f 2012/08/22 09:48:20 1.13
+++ rpl/lapack/lapack/dlasd6.f 2018/05/29 07:18:00 1.22
@@ -1,19 +1,19 @@
-*> \brief \b DLASD6
+*> \brief \b DLASD6 computes the SVD of an updated upper bidiagonal matrix obtained by merging two smaller ones by appending a row. Used by sbdsdc.
*
* =========== 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 DLASD6 + dependencies
-*>
-*> [TGZ]
-*>
-*> [ZIP]
-*>
+*> Download DLASD6 + dependencies
+*>
+*> [TGZ]
+*>
+*> [ZIP]
+*>
*> [TXT]
-*> \endhtmlonly
+*> \endhtmlonly
*
* Definition:
* ===========
@@ -22,7 +22,7 @@
* IDXQ, PERM, GIVPTR, GIVCOL, LDGCOL, GIVNUM,
* LDGNUM, POLES, DIFL, DIFR, Z, K, C, S, WORK,
* IWORK, INFO )
-*
+*
* .. Scalar Arguments ..
* INTEGER GIVPTR, ICOMPQ, INFO, K, LDGCOL, LDGNUM, NL,
* $ NR, SQRE
@@ -35,7 +35,7 @@
* $ GIVNUM( LDGNUM, * ), POLES( LDGNUM, * ),
* $ VF( * ), VL( * ), WORK( * ), Z( * )
* ..
-*
+*
*
*> \par Purpose:
* =============
@@ -74,7 +74,7 @@
*>
*> The first stage consists of deflating the size of the problem
*> when there are multiple singular values or if there is a zero
-*> in the Z vector. For each such occurence the dimension of the
+*> in the Z vector. For each such occurrence the dimension of the
*> secular equation problem is reduced by one. This stage is
*> performed by the routine DLASD7.
*>
@@ -164,7 +164,7 @@
*> row.
*> \endverbatim
*>
-*> \param[out] IDXQ
+*> \param[in,out] IDXQ
*> \verbatim
*> IDXQ is INTEGER array, dimension ( N )
*> This contains the permutation which will reintegrate the
@@ -232,14 +232,13 @@
*> \param[out] DIFR
*> \verbatim
*> DIFR is DOUBLE PRECISION array,
-*> dimension ( LDGNUM, 2 ) if ICOMPQ = 1 and
-*> dimension ( N ) if ICOMPQ = 0.
-*> On exit, DIFR(I, 1) is the distance between I-th updated
-*> (undeflated) singular value and the I+1-th (undeflated) old
-*> singular value.
+*> dimension ( LDDIFR, 2 ) if ICOMPQ = 1 and
+*> dimension ( K ) if ICOMPQ = 0.
+*> On exit, DIFR(I,1) = D(I) - DSIGMA(I+1), DIFR(K,1) is not
+*> defined and will not be referenced.
*>
-*> If ICOMPQ = 1, DIFR(1:K,2) is an array containing the
-*> normalizing factors for the right singular vector matrix.
+*> If ICOMPQ = 1, DIFR(1:K,2) is an array containing the
+*> normalizing factors for the right singular vector matrix.
*>
*> See DLASD8 for details on DIFL and DIFR.
*> \endverbatim
@@ -293,14 +292,14 @@
* Authors:
* ========
*
-*> \author Univ. of Tennessee
-*> \author Univ. of California Berkeley
-*> \author Univ. of Colorado Denver
-*> \author NAG Ltd.
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
*
-*> \date November 2011
+*> \date June 2016
*
-*> \ingroup auxOTHERauxiliary
+*> \ingroup OTHERauxiliary
*
*> \par Contributors:
* ==================
@@ -314,10 +313,10 @@
$ LDGNUM, POLES, DIFL, DIFR, Z, K, C, S, WORK,
$ IWORK, INFO )
*
-* -- LAPACK auxiliary routine (version 3.4.0) --
+* -- LAPACK auxiliary routine (version 3.7.0) --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-* November 2011
+* June 2016
*
* .. Scalar Arguments ..
INTEGER GIVPTR, ICOMPQ, INFO, K, LDGCOL, LDGNUM, NL,
@@ -414,10 +413,9 @@
CALL DLASD8( ICOMPQ, K, D, Z, VF, VL, DIFL, DIFR, LDGNUM,
$ WORK( ISIGMA ), WORK( IW ), INFO )
*
-* Handle error returned
+* Report the possible convergence failure.
*
IF( INFO.NE.0 ) THEN
- CALL XERBLA( 'DLASD8', -INFO )
RETURN
END IF
*