LAPACK  3.9.0
LAPACK: Linear Algebra PACKage
Functions/Subroutines
dlasd4.f File Reference

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Functions/Subroutines

subroutine dlasd4 (N, I, D, Z, DELTA, RHO, SIGMA, WORK, INFO)
 DLASD4 computes the square root of the i-th updated eigenvalue of a positive symmetric rank-one modification to a positive diagonal matrix. Used by dbdsdc. More...
 
dlaed6
subroutine dlaed6(KNITER, ORGATI, RHO, D, Z, FINIT, TAU, INFO)
DLAED6 used by sstedc. Computes one Newton step in solution of the secular equation.
Definition: dlaed6.f:142
dlasd5
subroutine dlasd5(I, D, Z, DELTA, RHO, DSIGMA, WORK)
DLASD5 computes the square root of the i-th eigenvalue of a positive symmetric rank-one modification ...
Definition: dlasd5.f:118
dlamch
double precision function dlamch(CMACH)
DLAMCH
Definition: dlamch.f:70