SCHKTZ tests STZRZF.

DOTYPE

          DOTYPE is LOGICAL array, dimension (NTYPES)


          The matrix types to be used for testing.  Matrices of type j


          (for 1 <= j <= NTYPES) are used for testing if DOTYPE(j) =


          .TRUE.; if DOTYPE(j) = .FALSE., then type j is not used.

NM

          NM is INTEGER


          The number of values of M contained in the vector MVAL.

MVAL

          MVAL is INTEGER array, dimension (NM)


          The values of the matrix row dimension M.

NN

          NN is INTEGER


          The number of values of N contained in the vector NVAL.

NVAL

          NVAL is INTEGER array, dimension (NN)


          The values of the matrix column dimension N.

THRESH

          THRESH is REAL


          The threshold value for the test ratios.  A result is


          included in the output file if RESULT >= THRESH.  To have


          every test ratio printed, use THRESH = 0.

TSTERR

          TSTERR is LOGICAL


          Flag that indicates whether error exits are to be tested.

A

          A is REAL array, dimension (MMAX*NMAX)


          where MMAX is the maximum value of M in MVAL and NMAX is the


          maximum value of N in NVAL.

COPYA

          COPYA is REAL array, dimension (MMAX*NMAX)

S

          S is REAL array, dimension


                      (min(MMAX,NMAX))

TAU

          TAU is REAL array, dimension (MMAX)

WORK

          WORK is REAL array, dimension


                      (MMAX*NMAX + 4*NMAX + MMAX)

NOUT

          NOUT is INTEGER


          The unit number for output.

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