version 1.9, 2011/11/21 22:19:54
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version 1.17, 2017/06/17 11:06:57
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*> \brief \b ZLATDF |
*> \brief \b ZLATDF uses the LU factorization of the n-by-n matrix computed by sgetc2 and computes a contribution to the reciprocal Dif-estimate. |
* |
* |
* =========== 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 ZLATDF + dependencies |
*> Download ZLATDF + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlatdf.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zlatdf.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlatdf.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zlatdf.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlatdf.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zlatdf.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* SUBROUTINE ZLATDF( IJOB, N, Z, LDZ, RHS, RDSUM, RDSCAL, IPIV, |
* SUBROUTINE ZLATDF( IJOB, N, Z, LDZ, RHS, RDSUM, RDSCAL, IPIV, |
* JPIV ) |
* JPIV ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* INTEGER IJOB, LDZ, N |
* INTEGER IJOB, LDZ, N |
* DOUBLE PRECISION RDSCAL, RDSUM |
* DOUBLE PRECISION RDSCAL, RDSUM |
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* INTEGER IPIV( * ), JPIV( * ) |
* INTEGER IPIV( * ), JPIV( * ) |
* COMPLEX*16 RHS( * ), Z( LDZ, * ) |
* COMPLEX*16 RHS( * ), Z( LDZ, * ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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*> Zx = +-e - f with the sign giving the greater value of |
*> Zx = +-e - f with the sign giving the greater value of |
*> 2-norm(x). About 5 times as expensive as Default. |
*> 2-norm(x). About 5 times as expensive as Default. |
*> IJOB .ne. 2: Local look ahead strategy where |
*> IJOB .ne. 2: Local look ahead strategy where |
*> all entries of the r.h.s. b is choosen as either +1 or |
*> all entries of the r.h.s. b is chosen as either +1 or |
*> -1. Default. |
*> -1. Default. |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
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*> |
*> |
*> \param[in] Z |
*> \param[in] Z |
*> \verbatim |
*> \verbatim |
*> Z is DOUBLE PRECISION array, dimension (LDZ, N) |
*> Z is COMPLEX*16 array, dimension (LDZ, N) |
*> On entry, the LU part of the factorization of the n-by-n |
*> On entry, the LU part of the factorization of the n-by-n |
*> matrix Z computed by ZGETC2: Z = P * L * U * Q |
*> matrix Z computed by ZGETC2: Z = P * L * U * Q |
*> \endverbatim |
*> \endverbatim |
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*> |
*> |
*> \param[in,out] RHS |
*> \param[in,out] RHS |
*> \verbatim |
*> \verbatim |
*> RHS is DOUBLE PRECISION array, dimension (N). |
*> RHS is COMPLEX*16 array, dimension (N). |
*> On entry, RHS contains contributions from other subsystems. |
*> On entry, RHS contains contributions from other subsystems. |
*> On exit, RHS contains the solution of the subsystem with |
*> On exit, RHS contains the solution of the subsystem with |
*> entries according to the value of IJOB (see above). |
*> entries according to the value of IJOB (see above). |
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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 |
*> \date June 2016 |
* |
* |
*> \ingroup complex16OTHERauxiliary |
*> \ingroup complex16OTHERauxiliary |
* |
* |
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SUBROUTINE ZLATDF( IJOB, N, Z, LDZ, RHS, RDSUM, RDSCAL, IPIV, |
SUBROUTINE ZLATDF( IJOB, N, Z, LDZ, RHS, RDSUM, RDSCAL, IPIV, |
$ JPIV ) |
$ JPIV ) |
* |
* |
* -- LAPACK auxiliary routine (version 3.4.0) -- |
* -- LAPACK auxiliary routine (version 3.7.0) -- |
* -- 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 |
* June 2016 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER IJOB, LDZ, N |
INTEGER IJOB, LDZ, N |