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LAPACK
3.10.1
LAPACK: Linear Algebra PACKage
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subroutine sget40 | ( | real | RMAX, |
integer | LMAX, | ||
integer, dimension( 3 ) | NINFO, | ||
integer | KNT, | ||
integer | NIN | ||
) |
SGET40
SGET40 tests STGEXC, a routine for swapping adjacent blocks (either 1 by 1 or 2 by 2) on the diagonal of a pencil in real generalized Schur form. Thus, STGEXC computes an orthogonal matrices Q and Z such that Q' * ( [ A B ], [ D E ] ) * Z = ( [ C1 B1 ], [ F1 E1 ] ) ( [ 0 C ] [ F ] ) ( [ 0 A1 ] [ D1] ) where (C1,F1) is similar to (C,F) and (A1,D1) is similar to (A,D). Both (A,D) and (C,F) are assumed to be in standard form and (A1,D1) and (C1,F1) are returned with the same properties.
[out] | RMAX | RMAX is REAL 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 where INFO is nonzero. |
[out] | KNT | KNT is INTEGER Total number of examples tested. |
[out] | NIN | NINFO is INTEGER |