LAPACK  3.8.0
LAPACK: Linear Algebra PACKage
dlahqr.f File Reference

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Functions/Subroutines

subroutine dlahqr (WANTT, WANTZ, N, ILO, IHI, H, LDH, WR, WI, ILOZ, IHIZ, Z, LDZ, INFO)
 DLAHQR computes the eigenvalues and Schur factorization of an upper Hessenberg matrix, using the double-shift/single-shift QR algorithm. More...