dla_lin_berr(l) - Linux man page

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 Z

Synopsis

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.