NAME

TESTING/EIG/sckgqr.f

SYNOPSIS

Functions/Subroutines

subroutine sckgqr (nm, mval, np, pval, nn, nval, nmats, iseed, thresh, nmax, a, af, aq, ar, taua, b, bf, bz, bt, bwk, taub, work, rwork, nin, nout, info)
SCKGQR

Function/Subroutine Documentation

subroutine sckgqr (integer nm, integer, dimension( * ) mval, integer np, integer, dimension( * ) pval, integer nn, integer, dimension( * ) nval, integer nmats, integer, dimension( 4 ) iseed, real thresh, integer nmax, real, dimension( * ) a, real, dimension( * ) af, real, dimension( * ) aq, real, dimension( * ) ar, real, dimension( * ) taua, real, dimension( * ) b, real, dimension( * ) bf, real, dimension( * ) bz, real, dimension( * ) bt, real, dimension( * ) bwk, real, dimension( * ) taub, real, dimension( * ) work, real, dimension( * ) rwork, integer nin, integer nout, integer info)

SCKGQR

Purpose:



 SCKGQR tests


 SGGQRF: GQR factorization for N-by-M matrix A and N-by-P matrix B,


 SGGRQF: GRQ factorization for M-by-N matrix A and P-by-N matrix B.

Parameters



          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(column) dimension M.



          NP is INTEGER


          The number of values of P contained in the vector PVAL.

PVAL



          PVAL is INTEGER array, dimension (NP)


          The values of the matrix row(column) dimension P.



          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(row) dimension N.

NMATS



          NMATS is INTEGER


          The number of matrix types to be tested for each combination


          of matrix dimensions.  If NMATS >= NTYPES (the maximum


          number of matrix types), then all the different types are


          generated for testing.  If NMATS < NTYPES, another input line


          is read to get the numbers of the matrix types to be used.

ISEED



          ISEED is INTEGER array, dimension (4)


          On entry, the seed of the random number generator.  The array


          elements should be between 0 and 4095, otherwise they will be


          reduced mod 4096, and ISEED(4) must be odd.


          On exit, the next seed in the random number sequence after


          all the test matrices have been generated.

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.

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)

TAUA



          TAUA is REAL array, dimension (NMAX)



          B is REAL array, dimension (NMAX*NMAX)



          BF is REAL array, dimension (NMAX*NMAX)



          BZ is REAL array, dimension (NMAX*NMAX)



          BT is REAL array, dimension (NMAX*NMAX)

BWK



          BWK is REAL array, dimension (NMAX*NMAX)

TAUB



          TAUB is REAL array, dimension (NMAX)

WORK



          WORK is REAL array, dimension (NMAX*NMAX)

RWORK



          RWORK is REAL array, dimension (NMAX)

NIN



          NIN is INTEGER


          The unit number for input.

NOUT



          NOUT is INTEGER


          The unit number for output.

INFO



          INFO is INTEGER


          = 0 :  successful exit


          > 0 :  If SLATMS returns an error code, the absolute value


                 of it is returned.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 207 of file sckgqr.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.