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dla_lin_berr.3lapack
Langue: en
Version: 282344 (debian - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
DLA_LIN_BERR - DLA_LIN_BERR compute component-wise relative backward error from the formula max(i) ( abs(R(i)) / ( abs(op(A_s))*abs(Y) + abs(B_s) )(i) ) where abs(Z) is the component-wise absolute value of the matrix or vector ZSYNOPSIS
- SUBROUTINE DLA_LIN_BERR
- ( N, NZ, NRHS, RES, AYB, BERR )
- IMPLICIT NONE
- INTEGER N, NZ, NRHS
- DOUBLE PRECISION AYB( N, NRHS ), BERR( NRHS )
- DOUBLE PRECISION RES( N, NRHS )
PURPOSE
DLA_LIN_BERR computes component-wise relative backward error from
the formula
max(i) ( abs(R(i)) / ( abs(op(A_s))*abs(Y) + abs(B_s) )(i) )
where abs(Z) is the component-wise absolute value of the matrix
or vector Z.
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