zla_lin_berr (l) - Linux Manuals

zla_lin_berr: ZLA_LIN_BERR compute componentwise 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 componentwise absolute value of the matrix or vector Z

Command to display zla_lin_berr manual in Linux: $ man l zla_lin_berr

NAME

ZLA_LIN_BERR - ZLA_LIN_BERR compute componentwise 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 componentwise absolute value of the matrix or vector Z

SYNOPSIS

SUBROUTINE ZLA_LIN_BERR: ( N, NZ, NRHS, RES, AYB, BERR )
: IMPLICIT NONE
: INTEGER N, NZ, NRHS
: DOUBLE PRECISION AYB( N, NRHS ), BERR( NRHS )
: COMPLEX*16 RES( N, NRHS )

PURPOSE

ZLA_LIN_BERR computes componentwise 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 componentwise absolute value of the matrix
or vector Z.