LAPACK 3.12.0
LAPACK: Linear Algebra PACKage

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Functions/Subroutines  
subroutine  zla_syrfsx_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) 
ZLA_SYRFSX_EXTENDED improves the computed solution to a system of linear equations for symmetric indefinite matrices by performing extraprecise iterative refinement and provides error bounds and backward error estimates for the solution.  