dget34.f - Man Page

subroutine dget34 (rmax, lmax, ninfo, knt)
DGET34

DGET34

Purpose:

 DGET34 tests DLAEXC, a routine for swapping adjacent blocks (either
 1 by 1 or 2 by 2) on the diagonal of a matrix in real Schur form.
 Thus, DLAEXC computes an orthogonal matrix Q such that

     Q' * [ A B ] * Q  = [ C1 B1 ]
          [ 0 C ]        [ 0  A1 ]

 where C1 is similar to C and A1 is similar to A.  Both A and C are
 assumed to be in standard form (equal diagonal entries and
 offdiagonal with differing signs) and A1 and C1 are returned with the
 same properties.

 The test code verifies these last assertions, as well as that
 the residual in the above equation 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 array, dimension (2)
          NINFO(J) is the number of examples where INFO=J occurred.

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 81 of file dget34.f.