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

# zla\_porcond\_x(3lapack)

ZLA\_PORCOND\_X Compute the infinity norm condition number of op(A) \* diag(X) where X is a COMPLEX\*16 vector

## NAME

ZLA\_PORCOND\_X - ZLA\_PORCOND\_X Compute the infinity norm condition number of  op(A) \* diag(X) where X is a COMPLEX\*16 vector

## SYNOPSIS

- DOUBLE PRECISION

  FUNCTION ZLA\_PORCOND\_X( UPLO, N, A, LDA, AF, LDAF, X, INFO, WORK, RWORK )

- IMPLICIT

  NONE

- CHARACTER

  UPLO

- INTEGER

  N, LDA, LDAF, INFO

- COMPLEX\*16

  A( LDA, \* ), AF( LDAF, \* ), WORK( \* ), X( \* )

- DOUBLE

  PRECISION RWORK( \* )

## PURPOSE

   ZLA\_PORCOND\_X Computes the infinity norm condition number of\
    op(A) \* diag(X) where X is a COMPLEX\*16 vector.

## ARGUMENTS

- C COMPLEX\*16 vector.

  - WORK COMPLEX\*16 workspace of size 2\*N.

  RWORK DOUBLE PRECISION workspace of size 3\*N.