NAME

TESTING/EIG/dckcsd.f

SYNOPSIS

Functions/Subroutines

subroutine dckcsd (nm, mval, pval, qval, nmats, iseed, thresh, mmax, x, xf, u1, u2, v1t, v2t, theta, iwork, work, rwork, nin, nout, info)
DCKCSD subroutine dlacsg (m, p, q, theta, iseed, x, ldx, work)

Function/Subroutine Documentation

subroutine dckcsd (integer nm, integer, dimension( * ) mval, integer, dimension( * ) pval, integer, dimension( * ) qval, integer nmats, integer, dimension( 4 ) iseed, double precision thresh, integer mmax, double precision, dimension( * ) x, double precision, dimension( * ) xf, double precision, dimension( * ) u1, double precision, dimension( * ) u2, double precision, dimension( * ) v1t, double precision, dimension( * ) v2t, double precision, dimension( * ) theta, integer, dimension( * ) iwork, double precision, dimension( * ) work, double precision, dimension( * ) rwork, integer nin, integer nout, integer info)

DCKCSD

Purpose:



 DCKCSD tests DORCSD:


        the CSD for an M-by-M orthogonal matrix X partitioned as


        [ X11 X12; X21 X22 ]. X11 is P-by-Q.

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 dimension M.

PVAL



          PVAL is INTEGER array, dimension (NM)


          The values of the matrix row dimension P.

QVAL



          QVAL is INTEGER array, dimension (NM)


          The values of the matrix column dimension Q.

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 DOUBLE PRECISION


          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.

MMAX



          MMAX is INTEGER


          The maximum value permitted for M, used in dimensioning the


          work arrays.



          X is DOUBLE PRECISION array, dimension (MMAX*MMAX)



          XF is DOUBLE PRECISION array, dimension (MMAX*MMAX)



          U1 is DOUBLE PRECISION array, dimension (MMAX*MMAX)



          U2 is DOUBLE PRECISION array, dimension (MMAX*MMAX)

V1T



          V1T is DOUBLE PRECISION array, dimension (MMAX*MMAX)

V2T



          V2T is DOUBLE PRECISION array, dimension (MMAX*MMAX)

THETA



          THETA is DOUBLE PRECISION array, dimension (MMAX)

IWORK



          IWORK is INTEGER array, dimension (MMAX)

WORK



          WORK is DOUBLE PRECISION array

RWORK



          RWORK is DOUBLE PRECISION array

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 DLAROR 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 181 of file dckcsd.f.

subroutine dlacsg (integer m, integer p, integer q, double precision, dimension( * ) theta, integer, dimension( 4 ) iseed, double precision, dimension( ldx, * ) x, integer ldx, double precision, dimension( * ) work)

Definition at line 350 of file dckcsd.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.