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version 1.19, 2020/05/21 21:45:58
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* |
* |
* =========== 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 DLAGTS + dependencies |
*> Download DLAGTS + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlagts.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlagts.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlagts.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlagts.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlagts.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlagts.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* SUBROUTINE DLAGTS( JOB, N, A, B, C, D, IN, Y, TOL, INFO ) |
* SUBROUTINE DLAGTS( JOB, N, A, B, C, D, IN, Y, TOL, INFO ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* INTEGER INFO, JOB, N |
* INTEGER INFO, JOB, N |
* DOUBLE PRECISION TOL |
* DOUBLE PRECISION TOL |
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* INTEGER IN( * ) |
* INTEGER IN( * ) |
* DOUBLE PRECISION A( * ), B( * ), C( * ), D( * ), Y( * ) |
* DOUBLE PRECISION A( * ), B( * ), C( * ), D( * ), Y( * ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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*> \param[in,out] TOL |
*> \param[in,out] TOL |
*> \verbatim |
*> \verbatim |
*> TOL is DOUBLE PRECISION |
*> TOL is DOUBLE PRECISION |
*> On entry, with JOB .lt. 0, TOL should be the minimum |
*> On entry, with JOB < 0, TOL should be the minimum |
*> perturbation to be made to very small diagonal elements of U. |
*> perturbation to be made to very small diagonal elements of U. |
*> TOL should normally be chosen as about eps*norm(U), where eps |
*> TOL should normally be chosen as about eps*norm(U), where eps |
*> is the relative machine precision, but if TOL is supplied as |
*> is the relative machine precision, but if TOL is supplied as |
*> non-positive, then it is reset to eps*max( abs( u(i,j) ) ). |
*> non-positive, then it is reset to eps*max( abs( u(i,j) ) ). |
*> If JOB .gt. 0 then TOL is not referenced. |
*> If JOB > 0 then TOL is not referenced. |
*> |
*> |
*> On exit, TOL is changed as described above, only if TOL is |
*> On exit, TOL is changed as described above, only if TOL is |
*> non-positive on entry. Otherwise TOL is unchanged. |
*> non-positive on entry. Otherwise TOL is unchanged. |
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*> \param[out] INFO |
*> \param[out] INFO |
*> \verbatim |
*> \verbatim |
*> INFO is INTEGER |
*> INFO is INTEGER |
*> = 0 : successful exit |
*> = 0: successful exit |
*> .lt. 0: if INFO = -i, the i-th argument had an illegal value |
*> < 0: if INFO = -i, the i-th argument had an illegal value |
*> .gt. 0: overflow would occur when computing the INFO(th) |
*> > 0: overflow would occur when computing the INFO(th) |
*> element of the solution vector x. This can only occur |
*> element of the solution vector x. This can only occur |
*> when JOB is supplied as positive and either means |
*> when JOB is supplied as positive and either means |
*> that a diagonal element of U is very small, or that |
*> that a diagonal element of U is very small, or that |
*> the elements of the right-hand side vector y are very |
*> the elements of the right-hand side vector y are very |
*> large. |
*> large. |
*> \endverbatim |
*> \endverbatim |
* |
* |
* 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 September 2012 |
*> \date December 2016 |
* |
* |
*> \ingroup auxOTHERauxiliary |
*> \ingroup OTHERauxiliary |
* |
* |
* ===================================================================== |
* ===================================================================== |
SUBROUTINE DLAGTS( JOB, N, A, B, C, D, IN, Y, TOL, INFO ) |
SUBROUTINE DLAGTS( JOB, N, A, B, C, D, IN, Y, TOL, INFO ) |
* |
* |
* -- LAPACK auxiliary routine (version 3.4.2) -- |
* -- 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..-- |
* September 2012 |
* December 2016 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER INFO, JOB, N |
INTEGER INFO, JOB, N |