dget37.f - Man Page

subroutine dget37 (rmax, lmax, ninfo, knt, nin)
DGET37

DGET37

Purpose:

 DGET37 tests DTRSNA, a routine for estimating condition numbers of
 eigenvalues and/or right eigenvectors of a matrix.

 The test matrices are read from a file with logical unit number NIN.

Parameters

RMAX

          RMAX is DOUBLE PRECISION array, dimension (3)
          Value of the largest test ratio.
          RMAX(1) = largest ratio comparing different calls to DTRSNA
          RMAX(2) = largest error in reciprocal condition
                    numbers taking their conditioning into account
          RMAX(3) = largest error in reciprocal condition
                    numbers not taking their conditioning into
                    account (may be larger than RMAX(2))

LMAX

          LMAX is INTEGER array, dimension (3)
          LMAX(i) is example number where largest test ratio
          RMAX(i) is achieved. Also:
          If DGEHRD returns INFO nonzero on example i, LMAX(1)=i
          If DHSEQR returns INFO nonzero on example i, LMAX(2)=i
          If DTRSNA returns INFO nonzero on example i, LMAX(3)=i

NINFO

          NINFO is INTEGER array, dimension (3)
          NINFO(1) = No. of times DGEHRD returned INFO nonzero
          NINFO(2) = No. of times DHSEQR returned INFO nonzero
          NINFO(3) = No. of times DTRSNA returned INFO nonzero

KNT

          KNT is INTEGER
          Total number of examples tested.

NIN

          NIN is INTEGER
          Input logical unit number

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 89 of file dget37.f.