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version 1.15, 2018/05/29 07:18:23
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*> \brief \b ZLA_LIN_BERR |
*> \brief \b ZLA_LIN_BERR computes a component-wise relative backward error. |
* |
* |
* =========== 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 ZLA_LIN_BERR + dependencies |
*> Download ZLA_LIN_BERR + dependencies |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zla_lin_berr.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zla_lin_berr.f"> |
*> [TGZ]</a> |
*> [TGZ]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zla_lin_berr.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zla_lin_berr.f"> |
*> [ZIP]</a> |
*> [ZIP]</a> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zla_lin_berr.f"> |
*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zla_lin_berr.f"> |
*> [TXT]</a> |
*> [TXT]</a> |
*> \endhtmlonly |
*> \endhtmlonly |
* |
* |
* Definition: |
* Definition: |
* =========== |
* =========== |
* |
* |
* SUBROUTINE ZLA_LIN_BERR ( N, NZ, NRHS, RES, AYB, BERR ) |
* SUBROUTINE ZLA_LIN_BERR ( N, NZ, NRHS, RES, AYB, BERR ) |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
* INTEGER N, NZ, NRHS |
* INTEGER N, NZ, NRHS |
* .. |
* .. |
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* DOUBLE PRECISION AYB( N, NRHS ), BERR( NRHS ) |
* DOUBLE PRECISION AYB( N, NRHS ), BERR( NRHS ) |
* COMPLEX*16 RES( N, NRHS ) |
* COMPLEX*16 RES( N, NRHS ) |
* .. |
* .. |
* |
* |
* |
* |
*> \par Purpose: |
*> \par Purpose: |
* ============= |
* ============= |
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*> |
*> |
*> \param[in] RES |
*> \param[in] RES |
*> \verbatim |
*> \verbatim |
*> RES is DOUBLE PRECISION array, dimension (N,NRHS) |
*> RES is COMPLEX*16 array, dimension (N,NRHS) |
*> The residual matrix, i.e., the matrix R in the relative backward |
*> The residual matrix, i.e., the matrix R in the relative backward |
*> error formula above. |
*> error formula above. |
*> \endverbatim |
*> \endverbatim |
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*> the matrix abs(op(A_s))*abs(Y) + abs(B_s). The matrices A, Y, and B |
*> the matrix abs(op(A_s))*abs(Y) + abs(B_s). The matrices A, Y, and B |
*> are from iterative refinement (see zla_gerfsx_extended.f). |
*> are from iterative refinement (see zla_gerfsx_extended.f). |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[out] BERR |
*> \param[out] BERR |
*> \verbatim |
*> \verbatim |
*> BERR is COMPLEX*16 array, dimension (NRHS) |
*> BERR is DOUBLE PRECISION array, dimension (NRHS) |
*> The componentwise relative backward error from the formula above. |
*> The componentwise relative backward error from the formula above. |
*> \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 November 2011 |
*> \date June 2016 |
* |
* |
*> \ingroup complex16OTHERcomputational |
*> \ingroup complex16OTHERcomputational |
* |
* |
* ===================================================================== |
* ===================================================================== |
SUBROUTINE ZLA_LIN_BERR ( N, NZ, NRHS, RES, AYB, BERR ) |
SUBROUTINE ZLA_LIN_BERR ( N, NZ, NRHS, RES, AYB, BERR ) |
* |
* |
* -- LAPACK computational routine (version 3.4.0) -- |
* -- LAPACK computational 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 N, NZ, NRHS |
INTEGER N, NZ, NRHS |