version 1.3, 2010/08/13 21:03:46
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version 1.4, 2010/12/21 13:48:05
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SUBROUTINE DGSVJ0( JOBV, M, N, A, LDA, D, SVA, MV, V, LDV, EPS, |
SUBROUTINE DGSVJ0( JOBV, M, N, A, LDA, D, SVA, MV, V, LDV, EPS, |
+ SFMIN, TOL, NSWEEP, WORK, LWORK, INFO ) |
+ SFMIN, TOL, NSWEEP, WORK, LWORK, INFO ) |
* |
* |
* -- LAPACK routine (version 3.2.2) -- |
* -- LAPACK routine (version 3.3.0) -- |
* |
* |
* -- Contributed by Zlatko Drmac of the University of Zagreb and -- |
* -- Contributed by Zlatko Drmac of the University of Zagreb and -- |
* -- Kresimir Veselic of the Fernuniversitaet Hagen -- |
* -- Kresimir Veselic of the Fernuniversitaet Hagen -- |
* -- June 2010 -- |
* November 2010 |
* |
* |
* -- 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..-- |
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INFO = -3 |
INFO = -3 |
ELSE IF( LDA.LT.M ) THEN |
ELSE IF( LDA.LT.M ) THEN |
INFO = -5 |
INFO = -5 |
ELSE IF( MV.LT.0 ) THEN |
ELSE IF( ( RSVEC.OR.APPLV ) .AND. ( MV.LT.0 ) ) THEN |
INFO = -8 |
INFO = -8 |
ELSE IF( LDV.LT.M ) THEN |
ELSE IF( ( RSVEC.AND.( LDV.LT.N ) ).OR. |
|
& ( APPLV.AND.( LDV.LT.MV ) ) ) THEN |
INFO = -10 |
INFO = -10 |
ELSE IF( TOL.LE.EPS ) THEN |
ELSE IF( TOL.LE.EPS ) THEN |
INFO = -13 |
INFO = -13 |
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SVA( p ) = DNRM2( M, A( 1, p ), 1 )*D( p ) |
SVA( p ) = DNRM2( M, A( 1, p ), 1 )*D( p ) |
ELSE |
ELSE |
TEMP1 = ZERO |
TEMP1 = ZERO |
AAPP = ZERO |
AAPP = ONE |
CALL DLASSQ( M, A( 1, p ), 1, TEMP1, AAPP ) |
CALL DLASSQ( M, A( 1, p ), 1, TEMP1, AAPP ) |
SVA( p ) = TEMP1*DSQRT( AAPP )*D( p ) |
SVA( p ) = TEMP1*DSQRT( AAPP )*D( p ) |
END IF |
END IF |
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+ FASTR ) |
+ FASTR ) |
SVA( q ) = AAQQ*DSQRT( DMAX1( ZERO, |
SVA( q ) = AAQQ*DSQRT( DMAX1( ZERO, |
+ ONE+T*APOAQ*AAPQ ) ) |
+ ONE+T*APOAQ*AAPQ ) ) |
AAPP = AAPP*DSQRT( ONE-T*AQOAP* |
AAPP = AAPP*DSQRT( DMAX1( ZERO, |
+ AAPQ ) |
+ ONE-T*AQOAP*AAPQ ) ) |
MXSINJ = DMAX1( MXSINJ, DABS( T ) ) |
MXSINJ = DMAX1( MXSINJ, DABS( T ) ) |
* |
* |
ELSE |
ELSE |
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+ D( q ) |
+ D( q ) |
ELSE |
ELSE |
T = ZERO |
T = ZERO |
AAQQ = ZERO |
AAQQ = ONE |
CALL DLASSQ( M, A( 1, q ), 1, T, |
CALL DLASSQ( M, A( 1, q ), 1, T, |
+ AAQQ ) |
+ AAQQ ) |
SVA( q ) = T*DSQRT( AAQQ )*D( q ) |
SVA( q ) = T*DSQRT( AAQQ )*D( q ) |
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+ D( p ) |
+ D( p ) |
ELSE |
ELSE |
T = ZERO |
T = ZERO |
AAPP = ZERO |
AAPP = ONE |
CALL DLASSQ( M, A( 1, p ), 1, T, |
CALL DLASSQ( M, A( 1, p ), 1, T, |
+ AAPP ) |
+ AAPP ) |
AAPP = T*DSQRT( AAPP )*D( p ) |
AAPP = T*DSQRT( AAPP )*D( p ) |
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MXSINJ = DMAX1( MXSINJ, DABS( SN ) ) |
MXSINJ = DMAX1( MXSINJ, DABS( SN ) ) |
SVA( q ) = AAQQ*DSQRT( DMAX1( ZERO, |
SVA( q ) = AAQQ*DSQRT( DMAX1( ZERO, |
+ ONE+T*APOAQ*AAPQ ) ) |
+ ONE+T*APOAQ*AAPQ ) ) |
AAPP = AAPP*DSQRT( ONE-T*AQOAP* |
AAPP = AAPP*DSQRT( DMAX1( ZERO, |
+ AAPQ ) |
+ ONE-T*AQOAP*AAPQ ) ) |
* |
* |
APOAQ = D( p ) / D( q ) |
APOAQ = D( p ) / D( q ) |
AQOAP = D( q ) / D( p ) |
AQOAP = D( q ) / D( p ) |
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+ D( q ) |
+ D( q ) |
ELSE |
ELSE |
T = ZERO |
T = ZERO |
AAQQ = ZERO |
AAQQ = ONE |
CALL DLASSQ( M, A( 1, q ), 1, T, |
CALL DLASSQ( M, A( 1, q ), 1, T, |
+ AAQQ ) |
+ AAQQ ) |
SVA( q ) = T*DSQRT( AAQQ )*D( q ) |
SVA( q ) = T*DSQRT( AAQQ )*D( q ) |
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+ D( p ) |
+ D( p ) |
ELSE |
ELSE |
T = ZERO |
T = ZERO |
AAPP = ZERO |
AAPP = ONE |
CALL DLASSQ( M, A( 1, p ), 1, T, |
CALL DLASSQ( M, A( 1, p ), 1, T, |
+ AAPP ) |
+ AAPP ) |
AAPP = T*DSQRT( AAPP )*D( p ) |
AAPP = T*DSQRT( AAPP )*D( p ) |
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SVA( N ) = DNRM2( M, A( 1, N ), 1 )*D( N ) |
SVA( N ) = DNRM2( M, A( 1, N ), 1 )*D( N ) |
ELSE |
ELSE |
T = ZERO |
T = ZERO |
AAPP = ZERO |
AAPP = ONE |
CALL DLASSQ( M, A( 1, N ), 1, T, AAPP ) |
CALL DLASSQ( M, A( 1, N ), 1, T, AAPP ) |
SVA( N ) = T*DSQRT( AAPP )*D( N ) |
SVA( N ) = T*DSQRT( AAPP )*D( N ) |
END IF |
END IF |