NAME

TESTING/LIN/schkrq.f

SYNOPSIS

Functions/Subroutines

subroutine schkrq (dotype, nm, mval, nn, nval, nnb, nbval, nxval, nrhs, thresh, tsterr, nmax, a, af, aq, ar, ac, b, x, xact, tau, work, rwork, iwork, nout)
SCHKRQ

Function/Subroutine Documentation

subroutine schkrq (logical, dimension( * ) dotype, integer nm, integer, dimension( * ) mval, integer nn, integer, dimension( * ) nval, integer nnb, integer, dimension( * ) nbval, integer, dimension( * ) nxval, integer nrhs, real thresh, logical tsterr, integer nmax, real, dimension( * ) a, real, dimension( * ) af, real, dimension( * ) aq, real, dimension( * ) ar, real, dimension( * ) ac, real, dimension( * ) b, real, dimension( * ) x, real, dimension( * ) xact, real, dimension( * ) tau, real, dimension( * ) work, real, dimension( * ) rwork, integer, dimension( * ) iwork, integer nout)

SCHKRQ

Purpose:



 SCHKRQ tests SGERQF, SORGRQ and SORMRQ.

Parameters

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 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 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.

NNB



          NNB is INTEGER


          The number of values of NB and NX contained in the


          vectors NBVAL and NXVAL.  The blocking parameters are used


          in pairs (NB,NX).

NBVAL



          NBVAL is INTEGER array, dimension (NNB)


          The values of the blocksize NB.

NXVAL



          NXVAL is INTEGER array, dimension (NNB)


          The values of the crossover point NX.

NRHS



          NRHS is INTEGER


          The number of right hand side vectors to be generated for


          each linear system.

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.

NMAX



          NMAX is INTEGER


          The maximum value permitted for M or N, used in dimensioning


          the work arrays.



          A is REAL array, dimension (NMAX*NMAX)



          AF is REAL array, dimension (NMAX*NMAX)



          AQ is REAL array, dimension (NMAX*NMAX)



          AR is REAL array, dimension (NMAX*NMAX)



          AC is REAL array, dimension (NMAX*NMAX)



          B is REAL array, dimension (NMAX*NRHS)



          X is REAL array, dimension (NMAX*NRHS)

XACT



          XACT is REAL array, dimension (NMAX*NRHS)

TAU



          TAU is REAL array, dimension (NMAX)

WORK



          WORK is REAL array, dimension (NMAX*NMAX)

RWORK



          RWORK is REAL array, dimension (NMAX)

IWORK



          IWORK is INTEGER array, dimension (NMAX)

NOUT



          NOUT is INTEGER


          The unit number for output.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 198 of file schkrq.f.

Author

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