--- rpl/lapack/lapack/dstein.f 2014/01/27 09:28:27 1.12
+++ rpl/lapack/lapack/dstein.f 2023/08/07 08:39:07 1.18
@@ -2,25 +2,25 @@
*
* =========== 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 DSTEIN + dependencies
-*>
-*> [TGZ]
-*>
-*> [ZIP]
-*>
+*> Download DSTEIN + dependencies
+*>
+*> [TGZ]
+*>
+*> [ZIP]
+*>
*> [TXT]
-*> \endhtmlonly
+*> \endhtmlonly
*
* Definition:
* ===========
*
* SUBROUTINE DSTEIN( N, D, E, M, W, IBLOCK, ISPLIT, Z, LDZ, WORK,
* IWORK, IFAIL, INFO )
-*
+*
* .. Scalar Arguments ..
* INTEGER INFO, LDZ, M, N
* ..
@@ -29,7 +29,7 @@
* $ IWORK( * )
* DOUBLE PRECISION D( * ), E( * ), W( * ), WORK( * ), Z( LDZ, * )
* ..
-*
+*
*
*> \par Purpose:
* =============
@@ -161,12 +161,10 @@
* Authors:
* ========
*
-*> \author Univ. of Tennessee
-*> \author Univ. of California Berkeley
-*> \author Univ. of Colorado Denver
-*> \author NAG Ltd.
-*
-*> \date November 2011
+*> \author Univ. of Tennessee
+*> \author Univ. of California Berkeley
+*> \author Univ. of Colorado Denver
+*> \author NAG Ltd.
*
*> \ingroup doubleOTHERcomputational
*
@@ -174,10 +172,9 @@
SUBROUTINE DSTEIN( N, D, E, M, W, IBLOCK, ISPLIT, Z, LDZ, WORK,
$ IWORK, IFAIL, INFO )
*
-* -- LAPACK computational routine (version 3.4.0) --
+* -- LAPACK computational routine --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-* November 2011
*
* .. Scalar Arguments ..
INTEGER INFO, LDZ, M, N
@@ -209,8 +206,8 @@
* ..
* .. External Functions ..
INTEGER IDAMAX
- DOUBLE PRECISION DASUM, DDOT, DLAMCH, DNRM2
- EXTERNAL IDAMAX, DASUM, DDOT, DLAMCH, DNRM2
+ DOUBLE PRECISION DDOT, DLAMCH, DNRM2
+ EXTERNAL IDAMAX, DDOT, DLAMCH, DNRM2
* ..
* .. External Subroutines ..
EXTERNAL DAXPY, DCOPY, DLAGTF, DLAGTS, DLARNV, DSCAL,
@@ -297,7 +294,7 @@
BLKSIZ = BN - B1 + 1
IF( BLKSIZ.EQ.1 )
$ GO TO 60
- GPIND = B1
+ GPIND = J1
*
* Compute reorthogonalization criterion and stopping criterion.
*
@@ -370,9 +367,10 @@
*
* Normalize and scale the righthand side vector Pb.
*
+ JMAX = IDAMAX( BLKSIZ, WORK( INDRV1+1 ), 1 )
SCL = BLKSIZ*ONENRM*MAX( EPS,
$ ABS( WORK( INDRV4+BLKSIZ ) ) ) /
- $ DASUM( BLKSIZ, WORK( INDRV1+1 ), 1 )
+ $ ABS( WORK( INDRV1+JMAX ) )
CALL DSCAL( BLKSIZ, SCL, WORK( INDRV1+1 ), 1 )
*
* Solve the system LU = Pb.