version 1.17, 2017/06/17 11:06:24
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version 1.20, 2023/08/07 08:38:57
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*> \author Univ. of Colorado Denver |
*> \author Univ. of Colorado Denver |
*> \author NAG Ltd. |
*> \author NAG Ltd. |
* |
* |
*> \date December 2016 |
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* |
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*> \ingroup doubleOTHERauxiliary |
*> \ingroup doubleOTHERauxiliary |
* |
* |
* ===================================================================== |
* ===================================================================== |
SUBROUTINE DLARFG( N, ALPHA, X, INCX, TAU ) |
SUBROUTINE DLARFG( N, ALPHA, X, INCX, TAU ) |
* |
* |
* -- LAPACK auxiliary routine (version 3.7.0) -- |
* -- LAPACK auxiliary 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..-- |
* December 2016 |
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* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER INCX, N |
INTEGER INCX, N |
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CALL DSCAL( N-1, RSAFMN, X, INCX ) |
CALL DSCAL( N-1, RSAFMN, X, INCX ) |
BETA = BETA*RSAFMN |
BETA = BETA*RSAFMN |
ALPHA = ALPHA*RSAFMN |
ALPHA = ALPHA*RSAFMN |
IF( ABS( BETA ).LT.SAFMIN ) |
IF( (ABS( BETA ).LT.SAFMIN) .AND. (KNT .LT. 20) ) |
$ GO TO 10 |
$ GO TO 10 |
* |
* |
* New BETA is at most 1, at least SAFMIN |
* New BETA is at most 1, at least SAFMIN |