CLA_LIN_BERR - Online Linux Manual PageSection : 1
Updated : November 2008
Source : LAPACK routine (version 3.2)
Note : LAPACK routine (version 3.2)
NAMECLA_LIN_BERR - CLA_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 Z
SYNOPSISSUBROUTINE CLA_LIN_BERR ( N, NZ, NRHS, RES, AYB, BERR ) IMPLICIT NONE INTEGER N, NZ, NRHS REAL AYB( N, NRHS ), BERR( NRHS ) COMPLEX RES( N, NRHS )
PURPOSE
CLA_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. 0
Johanes Gumabo
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