[BACK]Return to dstein.f CVS log [TXT] [DIR] Up to [local] / rpl / lapack / lapack

Diff for /rpl/lapack/lapack/dstein.f between versions 1.11 and 1.18

version 1.11, 2012/12/14 14:22:40 version 1.18, 2023/08/07 08:39:07
Line 2 Line 2
 *  *
 *  =========== DOCUMENTATION ===========  *  =========== DOCUMENTATION ===========
 *  *
 * Online html documentation available at   * Online html documentation available at
 *            http://www.netlib.org/lapack/explore-html/   *            http://www.netlib.org/lapack/explore-html/
 *  *
 *> \htmlonly  *> \htmlonly
 *> Download DSTEIN + dependencies   *> Download DSTEIN + dependencies
 *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dstein.f">   *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dstein.f">
 *> [TGZ]</a>   *> [TGZ]</a>
 *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dstein.f">   *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dstein.f">
 *> [ZIP]</a>   *> [ZIP]</a>
 *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dstein.f">   *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dstein.f">
 *> [TXT]</a>  *> [TXT]</a>
 *> \endhtmlonly   *> \endhtmlonly
 *  *
 *  Definition:  *  Definition:
 *  ===========  *  ===========
 *  *
 *       SUBROUTINE DSTEIN( N, D, E, M, W, IBLOCK, ISPLIT, Z, LDZ, WORK,  *       SUBROUTINE DSTEIN( N, D, E, M, W, IBLOCK, ISPLIT, Z, LDZ, WORK,
 *                          IWORK, IFAIL, INFO )  *                          IWORK, IFAIL, INFO )
 *   *
 *       .. Scalar Arguments ..  *       .. Scalar Arguments ..
 *       INTEGER            INFO, LDZ, M, N  *       INTEGER            INFO, LDZ, M, N
 *       ..  *       ..
Line 29 Line 29
 *      $                   IWORK( * )  *      $                   IWORK( * )
 *       DOUBLE PRECISION   D( * ), E( * ), W( * ), WORK( * ), Z( LDZ, * )  *       DOUBLE PRECISION   D( * ), E( * ), W( * ), WORK( * ), Z( LDZ, * )
 *       ..  *       ..
 *    *
 *  *
 *> \par Purpose:  *> \par Purpose:
 *  =============  *  =============
Line 161 Line 161
 *  Authors:  *  Authors:
 *  ========  *  ========
 *  *
 *> \author Univ. of Tennessee   *> \author Univ. of Tennessee
 *> \author Univ. of California Berkeley   *> \author Univ. of California Berkeley
 *> \author Univ. of Colorado Denver   *> \author Univ. of Colorado Denver
 *> \author NAG Ltd.   *> \author NAG Ltd.
 *  
 *> \date November 2011  
 *  *
 *> \ingroup doubleOTHERcomputational  *> \ingroup doubleOTHERcomputational
 *  *
Line 174 Line 172
       SUBROUTINE DSTEIN( N, D, E, M, W, IBLOCK, ISPLIT, Z, LDZ, WORK,        SUBROUTINE DSTEIN( N, D, E, M, W, IBLOCK, ISPLIT, Z, LDZ, WORK,
      $                   IWORK, IFAIL, INFO )       $                   IWORK, IFAIL, INFO )
 *  *
 *  -- LAPACK computational routine (version 3.4.0) --  *  -- LAPACK computational routine --
 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --  *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--  *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
 *     November 2011  
 *  *
 *     .. Scalar Arguments ..  *     .. Scalar Arguments ..
       INTEGER            INFO, LDZ, M, N        INTEGER            INFO, LDZ, M, N
Line 209 Line 206
 *     ..  *     ..
 *     .. External Functions ..  *     .. External Functions ..
       INTEGER            IDAMAX        INTEGER            IDAMAX
       DOUBLE PRECISION   DASUM, DDOT, DLAMCH, DNRM2        DOUBLE PRECISION   DDOT, DLAMCH, DNRM2
       EXTERNAL           IDAMAX, DASUM, DDOT, DLAMCH, DNRM2        EXTERNAL           IDAMAX, DDOT, DLAMCH, DNRM2
 *     ..  *     ..
 *     .. External Subroutines ..  *     .. External Subroutines ..
       EXTERNAL           DAXPY, DCOPY, DLAGTF, DLAGTS, DLARNV, DSCAL,        EXTERNAL           DAXPY, DCOPY, DLAGTF, DLAGTS, DLARNV, DSCAL,
Line 297 Line 294
          BLKSIZ = BN - B1 + 1           BLKSIZ = BN - B1 + 1
          IF( BLKSIZ.EQ.1 )           IF( BLKSIZ.EQ.1 )
      $      GO TO 60       $      GO TO 60
          GPIND = B1           GPIND = J1
 *  *
 *        Compute reorthogonalization criterion and stopping criterion.  *        Compute reorthogonalization criterion and stopping criterion.
 *  *
Line 370 Line 367
 *  *
 *           Normalize and scale the righthand side vector Pb.  *           Normalize and scale the righthand side vector Pb.
 *  *
               JMAX = IDAMAX( BLKSIZ, WORK( INDRV1+1 ), 1 )
             SCL = BLKSIZ*ONENRM*MAX( EPS,              SCL = BLKSIZ*ONENRM*MAX( EPS,
      $            ABS( WORK( INDRV4+BLKSIZ ) ) ) /       $            ABS( WORK( INDRV4+BLKSIZ ) ) ) /
      $            DASUM( BLKSIZ, WORK( INDRV1+1 ), 1 )       $            ABS( WORK( INDRV1+JMAX ) )
             CALL DSCAL( BLKSIZ, SCL, WORK( INDRV1+1 ), 1 )              CALL DSCAL( BLKSIZ, SCL, WORK( INDRV1+1 ), 1 )
 *  *
 *           Solve the system LU = Pb.  *           Solve the system LU = Pb.
Removed from v.1.11  
changed lines
  Added in v.1.18

CVSweb interface <joel.bertrand@systella.fr>