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TESTING/EIG/sget33.f(3) LAPACK TESTING/EIG/sget33.f(3)

TESTING/EIG/sget33.f


subroutine sget33 (rmax, lmax, ninfo, knt)
SGET33

SGET33

Purpose:


SGET33 tests SLANV2, 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 REAL
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 sget33.f.

Generated automatically by Doxygen for LAPACK from the source code.

Sun Jan 12 2025 15:13:33 Version 3.12.1

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