LAPACK  3.9.0
LAPACK: Linear Algebra PACKage
Functions/Subroutines
clahqr.f File Reference

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Functions/Subroutines

subroutine clahqr (WANTT, WANTZ, N, ILO, IHI, H, LDH, W, ILOZ, IHIZ, Z, LDZ, INFO)
 CLAHQR computes the eigenvalues and Schur factorization of an upper Hessenberg matrix, using the double-shift/single-shift QR algorithm. More...
 
slabad
subroutine slabad(SMALL, LARGE)
SLABAD
Definition: slabad.f:76
clarfg
subroutine clarfg(N, ALPHA, X, INCX, TAU)
CLARFG generates an elementary reflector (Householder matrix).
Definition: clarfg.f:108
cscal
subroutine cscal(N, CA, CX, INCX)
CSCAL
Definition: cscal.f:80
slamch
real function slamch(CMACH)
SLAMCH
Definition: slamch.f:70
ccopy
subroutine ccopy(N, CX, INCX, CY, INCY)
CCOPY
Definition: ccopy.f:83
cladiv
complex function cladiv(X, Y)
CLADIV performs complex division in real arithmetic, avoiding unnecessary overflow.
Definition: cladiv.f:66