LAPACK  3.7.0
LAPACK: Linear Algebra PACKage
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dlahqr.f File Reference

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...