LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
dlasd4.f File Reference

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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...