NAME

       heev_comp_grp - Eig computational routines

SYNOPSIS

   Modules
       — full —
       disna:          eig condition numbers
       {he,sy}trd:     reduction to tridiagonal
       {he,sy}td2:     reduction to tridiagonal, level 2
       latrd:          step in hetrd
       {un,or}gtr:     generate Q from hetrd
       {un,or}mtr:     multiply by Q from hetrd
       {he,sy}trd_2stage: reduction to tridiagonal, 2-stage
       {he,sy}trd_he2hb:   full to band (1st stage)
       {he,sy}trd_hb2st:   band to tridiagonal (2nd stage)
       {hb,sb}2st_kernels: band to tridiagonal (2nd stage)
       lae2:           2x2 eig, step in steqr, stemr
       laesy:          2x2 eig
       laev2:          2x2 eig
       lagtf:          LU factor of (T - λI)
       lagts:          LU solve  of (T - λI) x = y
       — packed —
       {hp,sp}trd:     reduction to tridiagonal
       {up,op}gtr:     generate Q from hetrd
       {up,op}mtr:     multiply by Q from hptrd
       — banded —
       {hb,sb}trd:     reduction to tridiagonal

Detailed Description

Author

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