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version 1.18, 2023/08/07 08:38:52
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*> \brief \b DLA_SYRCOND |
*> \brief \b DLA_SYRCOND estimates the Skeel condition number for a symmetric indefinite matrix. |
* |
* |
* =========== 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 DLA_SYRCOND + dependencies |
*> Download DLA_SYRCOND + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dla_syrcond.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dla_syrcond.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dla_syrcond.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dla_syrcond.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dla_syrcond.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dla_syrcond.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* DOUBLE PRECISION FUNCTION DLA_SYRCOND( UPLO, N, A, LDA, AF, LDAF, |
* DOUBLE PRECISION FUNCTION DLA_SYRCOND( UPLO, N, A, LDA, AF, LDAF, |
* IPIV, CMODE, C, INFO, WORK, |
* IPIV, CMODE, C, INFO, WORK, |
* IWORK ) |
* IWORK ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* CHARACTER UPLO |
* CHARACTER UPLO |
* INTEGER N, LDA, LDAF, INFO, CMODE |
* INTEGER N, LDA, LDAF, INFO, CMODE |
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* INTEGER IWORK( * ), IPIV( * ) |
* INTEGER IWORK( * ), IPIV( * ) |
* DOUBLE PRECISION A( LDA, * ), AF( LDAF, * ), WORK( * ), C( * ) |
* DOUBLE PRECISION A( LDA, * ), AF( LDAF, * ), WORK( * ), C( * ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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*> i > 0: The ith argument is invalid. |
*> i > 0: The ith argument is invalid. |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[in] WORK |
*> \param[out] WORK |
*> \verbatim |
*> \verbatim |
*> WORK is DOUBLE PRECISION array, dimension (3*N). |
*> WORK is DOUBLE PRECISION array, dimension (3*N). |
*> Workspace. |
*> Workspace. |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[in] IWORK |
*> \param[out] IWORK |
*> \verbatim |
*> \verbatim |
*> IWORK is INTEGER array, dimension (N). |
*> IWORK is INTEGER array, dimension (N). |
*> Workspace. |
*> Workspace. |
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* 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 doubleSYcomputational |
*> \ingroup doubleSYcomputational |
* |
* |
* ===================================================================== |
* ===================================================================== |
DOUBLE PRECISION FUNCTION DLA_SYRCOND( UPLO, N, A, LDA, AF, LDAF, |
DOUBLE PRECISION FUNCTION DLA_SYRCOND( UPLO, N, A, LDA, AF, LDAF, |
$ IPIV, CMODE, C, INFO, WORK, |
$ IPIV, CMODE, C, INFO, WORK, |
$ IWORK ) |
$ IWORK ) |
* |
* |
* -- 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 .. |
CHARACTER UPLO |
CHARACTER UPLO |
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* .. |
* .. |
* .. External Functions .. |
* .. External Functions .. |
LOGICAL LSAME |
LOGICAL LSAME |
INTEGER IDAMAX |
|
DOUBLE PRECISION DLAMCH |
DOUBLE PRECISION DLAMCH |
EXTERNAL LSAME, IDAMAX, DLAMCH |
EXTERNAL LSAME, DLAMCH |
* .. |
* .. |
* .. External Subroutines .. |
* .. External Subroutines .. |
EXTERNAL DLACN2, DLATRS, DRSCL, XERBLA, DSYTRS |
EXTERNAL DLACN2, XERBLA, DSYTRS |
* .. |
* .. |
* .. Intrinsic Functions .. |
* .. Intrinsic Functions .. |
INTRINSIC ABS, MAX |
INTRINSIC ABS, MAX |
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* |
* |
RETURN |
RETURN |
* |
* |
|
* End of DLA_SYRCOND |
|
* |
END |
END |