dget34.f3
Usage
Functions/Subroutines
subroutine dget34 (rmax, lmax, ninfo, knt)
DGET34
Function/Subroutine Documentation
subroutine dget34 (double precision rmax, integer lmax, integer, dimension( 2 ) ninfo, integer knt)
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.