cla_lin_berr3lapack
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
Usage
- SUBROUTINE 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.