version 1.5, 2011/11/21 20:43:11
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version 1.11, 2016/08/27 15:34:49
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*> |
*> |
*> \verbatim |
*> \verbatim |
*> |
*> |
*> ZSYEQUB computes row and column scalings intended to equilibrate a |
*> ZHEEQUB computes row and column scalings intended to equilibrate a |
*> symmetric matrix A and reduce its condition number |
*> Hermitian matrix A and reduce its condition number |
*> (with respect to the two-norm). S contains the scale factors, |
*> (with respect to the two-norm). S contains the scale factors, |
*> S(i) = 1/sqrt(A(i,i)), chosen so that the scaled matrix B with |
*> S(i) = 1/sqrt(A(i,i)), chosen so that the scaled matrix B with |
*> elements B(i,j) = S(i)*A(i,j)*S(j) has ones on the diagonal. This |
*> elements B(i,j) = S(i)*A(i,j)*S(j) has ones on the diagonal. This |
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*> \param[in] A |
*> \param[in] A |
*> \verbatim |
*> \verbatim |
*> A is COMPLEX*16 array, dimension (LDA,N) |
*> A is COMPLEX*16 array, dimension (LDA,N) |
*> The N-by-N symmetric matrix whose scaling |
*> The N-by-N Hermitian matrix whose scaling |
*> factors are to be computed. Only the diagonal elements of A |
*> factors are to be computed. Only the diagonal elements of A |
*> are referenced. |
*> are referenced. |
*> \endverbatim |
*> \endverbatim |
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*> |
*> |
*> \param[out] WORK |
*> \param[out] WORK |
*> \verbatim |
*> \verbatim |
*> WORK is DOUBLE PRECISION array, dimension (3*N) |
*> WORK is COMPLEX*16 array, dimension (3*N) |
*> \endverbatim |
*> \endverbatim |
*> |
*> |
*> \param[out] INFO |
*> \param[out] INFO |
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*> \author Univ. of Colorado Denver |
*> \author Univ. of Colorado Denver |
*> \author NAG Ltd. |
*> \author NAG Ltd. |
* |
* |
*> \date November 2011 |
*> \date April 2012 |
* |
* |
*> \ingroup complex16HEcomputational |
*> \ingroup complex16HEcomputational |
* |
* |
* ===================================================================== |
* ===================================================================== |
SUBROUTINE ZHEEQUB( UPLO, N, A, LDA, S, SCOND, AMAX, WORK, INFO ) |
SUBROUTINE ZHEEQUB( UPLO, N, A, LDA, S, SCOND, AMAX, WORK, INFO ) |
* |
* |
* -- LAPACK computational routine (version 3.4.0) -- |
* -- LAPACK computational routine (version 3.4.1) -- |
* -- 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 |
* April 2012 |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
INTEGER INFO, LDA, N |
INTEGER INFO, LDA, N |