version 1.17, 2017/06/17 10:53:49
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version 1.22, 2023/08/07 08:38:50
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*> \verbatim |
*> \verbatim |
*> INFO is INTEGER |
*> INFO is INTEGER |
*> = 0: successful exit |
*> = 0: successful exit |
*> > 0: if INFO = k, U(k, k) is likely to produce owerflow if |
*> > 0: if INFO = k, U(k, k) is likely to produce overflow if |
*> we try to solve for x in Ax = b. So U is perturbed to |
*> we try to solve for x in Ax = b. So U is perturbed to |
*> avoid the overflow. |
*> avoid the overflow. |
*> \endverbatim |
*> \endverbatim |
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*> \author Univ. of Colorado Denver |
*> \author Univ. of Colorado Denver |
*> \author NAG Ltd. |
*> \author NAG Ltd. |
* |
* |
*> \date June 2016 |
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* |
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*> \ingroup doubleGEauxiliary |
*> \ingroup doubleGEauxiliary |
* |
* |
*> \par Contributors: |
*> \par Contributors: |
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* ===================================================================== |
* ===================================================================== |
SUBROUTINE DGETC2( N, A, LDA, IPIV, JPIV, INFO ) |
SUBROUTINE DGETC2( N, A, LDA, IPIV, JPIV, INFO ) |
* |
* |
* -- 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..-- |
* June 2016 |
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* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER INFO, LDA, N |
INTEGER INFO, LDA, N |
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DOUBLE PRECISION BIGNUM, EPS, SMIN, SMLNUM, XMAX |
DOUBLE PRECISION BIGNUM, EPS, SMIN, SMLNUM, XMAX |
* .. |
* .. |
* .. External Subroutines .. |
* .. External Subroutines .. |
EXTERNAL DGER, DSWAP |
EXTERNAL DGER, DSWAP, DLABAD |
* .. |
* .. |
* .. External Functions .. |
* .. External Functions .. |
DOUBLE PRECISION DLAMCH |
DOUBLE PRECISION DLAMCH |