--- rpl/lapack/lapack/dtgex2.f 2011/11/21 20:43:06 1.10
+++ rpl/lapack/lapack/dtgex2.f 2017/06/17 11:06:37 1.19
@@ -1,26 +1,26 @@
-*> \brief \b DTGEX2
+*> \brief \b DTGEX2 swaps adjacent diagonal blocks in an upper (quasi) triangular matrix pair by an orthogonal equivalence transformation.
*
* =========== 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 DTGEX2 + dependencies
-*>
-*> [TGZ]
-*>
-*> [ZIP]
-*>
+*> Download DTGEX2 + dependencies
+*>
+*> [TGZ]
+*>
+*> [ZIP]
+*>
*> [TXT]
-*> \endhtmlonly
+*> \endhtmlonly
*
* Definition:
* ===========
*
* SUBROUTINE DTGEX2( WANTQ, WANTZ, N, A, LDA, B, LDB, Q, LDQ, Z,
* LDZ, J1, N1, N2, WORK, LWORK, INFO )
-*
+*
* .. Scalar Arguments ..
* LOGICAL WANTQ, WANTZ
* INTEGER INFO, J1, LDA, LDB, LDQ, LDZ, LWORK, N, N1, N2
@@ -29,7 +29,7 @@
* DOUBLE PRECISION A( LDA, * ), B( LDB, * ), Q( LDQ, * ),
* $ WORK( * ), Z( LDZ, * )
* ..
-*
+*
*
*> \par Purpose:
* =============
@@ -176,12 +176,12 @@
* 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 December 2016
*
*> \ingroup doubleGEauxiliary
*
@@ -221,10 +221,10 @@
SUBROUTINE DTGEX2( WANTQ, WANTZ, N, A, LDA, B, LDB, Q, LDQ, Z,
$ LDZ, J1, N1, N2, WORK, LWORK, 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
+* December 2016
*
* .. Scalar Arguments ..
LOGICAL WANTQ, WANTZ
@@ -314,7 +314,7 @@
CALL DLASSQ( M*M, WORK, 1, DSCALE, DSUM )
DNORM = DSCALE*SQRT( DSUM )
*
-* THRES has been changed from
+* THRES has been changed from
* THRESH = MAX( TEN*EPS*SA, SMLNUM )
* to
* THRESH = MAX( TWENTY*EPS*SA, SMLNUM )
@@ -595,9 +595,7 @@
*
* Standardize existing 2-by-2 blocks.
*
- DO 50 I = 1, M*M
- WORK(I) = ZERO
- 50 CONTINUE
+ CALL DLASET( 'Full', M, M, ZERO, ZERO, WORK, M )
WORK( 1 ) = ONE
T( 1, 1 ) = ONE
IDUM = LWORK - M*M - 2
@@ -668,7 +666,7 @@
$ A( J1, I ), LDA, ZERO, WORK, M )
CALL DLACPY( 'Full', M, N-I+1, WORK, M, A( J1, I ), LDA )
CALL DGEMM( 'T', 'N', M, N-I+1, M, ONE, LI, LDST,
- $ B( J1, I ), LDA, ZERO, WORK, M )
+ $ B( J1, I ), LDB, ZERO, WORK, M )
CALL DLACPY( 'Full', M, N-I+1, WORK, M, B( J1, I ), LDB )
END IF
I = J1 - 1