LAPACK  3.5.0
LAPACK: Linear Algebra PACKage
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dget33.f File Reference

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Functions/Subroutines

subroutine dget33 (RMAX, LMAX, NINFO, KNT)
 DGET33

Function/Subroutine Documentation

subroutine dget33 ( double precision  RMAX,
integer  LMAX,
integer  NINFO,
integer  KNT 
)

DGET33

Purpose:
 DGET33 tests DLANV2, a routine for putting 2 by 2 blocks into
 standard form.  In other words, it computes a two by two rotation
 [[C,S];[-S,C]] where in

    [ C S ][T(1,1) T(1,2)][ C -S ] = [ T11 T12 ]
    [-S C ][T(2,1) T(2,2)][ S  C ]   [ T21 T22 ]

 either
    1) T21=0 (real eigenvalues), or
    2) T11=T22 and T21*T12<0 (complex conjugate eigenvalues).
 We also  verify that the residual is small.
Parameters
[out]RMAX
          RMAX is DOUBLE PRECISION
          Value of the largest test ratio.
[out]LMAX
          LMAX is INTEGER
          Example number where largest test ratio achieved.
[out]NINFO
          NINFO is INTEGER
          Number of examples returned with INFO .NE. 0.
[out]KNT
          KNT is INTEGER
          Total number of examples tested.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date
November 2011

Definition at line 77 of file dget33.f.

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