*> \brief \b ZLA_HERFSX_EXTENDED improves the computed solution to a system of linear equations for Hermitian indefinite matrices by performing extra-precise iterative refinement and provides error bounds and backward error estimates for the solution.
*
*  =========== DOCUMENTATION ===========
*
* Online html documentation available at
*            http://www.netlib.org/lapack/explore-html/
*
*> Download ZLA_HERFSX_EXTENDED + dependencies
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*> [TXT]</a>
*
*  Definition:
*  ===========
*
*       SUBROUTINE ZLA_HERFSX_EXTENDED( PREC_TYPE, UPLO, N, NRHS, A, LDA,
*                                       AF, LDAF, IPIV, COLEQU, C, B, LDB,
*                                       Y, LDY, BERR_OUT, N_NORMS,
*                                       ERR_BNDS_NORM, ERR_BNDS_COMP, RES,
*                                       AYB, DY, Y_TAIL, RCOND, ITHRESH,
*                                       RTHRESH, DZ_UB, IGNORE_CWISE,
*                                       INFO )
*
*       .. Scalar Arguments ..
*       INTEGER            INFO, LDA, LDAF, LDB, LDY, N, NRHS, PREC_TYPE,
*      $                   N_NORMS, ITHRESH
*       CHARACTER          UPLO
*       LOGICAL            COLEQU, IGNORE_CWISE
*       DOUBLE PRECISION   RTHRESH, DZ_UB
*       ..
*       .. Array Arguments ..
*       INTEGER            IPIV( * )
*       COMPLEX*16         A( LDA, * ), AF( LDAF, * ), B( LDB, * ),
*      $                   Y( LDY, * ), RES( * ), DY( * ), Y_TAIL( * )
*       DOUBLE PRECISION   C( * ), AYB( * ), RCOND, BERR_OUT( * ),
*      $                   ERR_BNDS_NORM( NRHS, * ),
*      $                   ERR_BNDS_COMP( NRHS, * )
*       ..
*
*
*> \par Purpose:
*  =============
*>
*> \verbatim
*>
*> ZLA_HERFSX_EXTENDED improves the computed solution to a system of
*> linear equations by performing extra-precise iterative refinement
