---
name: "sla_lin_berr"
section: "3lapack"
platform: "linux"
package: "liblapack-doc"
version: "3.2.1-8"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/sla_lin_berr/3lapack"
---

# sla\_lin\_berr(3lapack)

SLA\_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

## NAME

SLA\_LIN\_BERR - SLA\_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 SLA\_LIN\_BERR

  ( N, NZ, NRHS, RES, AYB, BERR )

- IMPLICIT

  NONE

- INTEGER

  N, NZ, NRHS

- REAL

  AYB( N, NRHS ), BERR( NRHS )

- REAL

  RES( N, NRHS )

## PURPOSE

   SLA\_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.