dget33.f3
Usage
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
RMAX
!> RMAX is DOUBLE PRECISION !> Value of the largest test ratio. !>
LMAX
!> LMAX is INTEGER !> Example number where largest test ratio achieved. !>
NINFO
!> NINFO is INTEGER !> Number of examples returned with INFO .NE. 0. !>
KNT
!> KNT is INTEGER !> Total number of examples tested. !>
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Definition at line 75 of file dget33.f.