ZGET37 tests ZTRSNA, 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.

RMAX

          RMAX is DOUBLE PRECISION array, dimension (3)


          Value of the largest test ratio.


          RMAX(1) = largest ratio comparing different calls to ZTRSNA


          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 ZGEHRD returns INFO nonzero on example i, LMAX(1)=i


          If ZHSEQR returns INFO nonzero on example i, LMAX(2)=i


          If ZTRSNA returns INFO nonzero on example i, LMAX(3)=i

NINFO

          NINFO is INTEGER array, dimension (3)


          NINFO(1) = No. of times ZGEHRD returned INFO nonzero


          NINFO(2) = No. of times ZHSEQR returned INFO nonzero


          NINFO(3) = No. of times ZTRSNA returned INFO nonzero

KNT

          KNT is INTEGER


          Total number of examples tested.

NIN

          NIN is INTEGER


          Input logical unit number

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.