testdata/lapack/TESTING/EIG/derred.f
*> \brief \b DERRED
*
* =========== DOCUMENTATION ===========
*
* Online html documentation available at
* http://www.netlib.org/lapack/explore-html/
*
* Definition:
* ===========
*
* SUBROUTINE DERRED( PATH, NUNIT )
*
* .. Scalar Arguments ..
* CHARACTER*3 PATH
* INTEGER NUNIT
* ..
*
*
*> \par Purpose:
* =============
*>
*> \verbatim
*>
*> DERRED tests the error exits for the eigenvalue driver routines for
*> DOUBLE PRECISION matrices:
*>
*> PATH driver description
*> ---- ------ -----------
*> SEV DGEEV find eigenvalues/eigenvectors for nonsymmetric A
*> SES DGEES find eigenvalues/Schur form for nonsymmetric A
*> SVX DGEEVX SGEEV + balancing and condition estimation
*> SSX DGEESX SGEES + balancing and condition estimation
*> DBD DGESVD compute SVD of an M-by-N matrix A
*> DGESDD compute SVD of an M-by-N matrix A (by divide and
*> conquer)
*> DGEJSV compute SVD of an M-by-N matrix A where M >= N
*> DGESVDX compute SVD of an M-by-N matrix A(by bisection
*> and inverse iteration)
*> \endverbatim
*
* Arguments:
* ==========
*
*> \param[in] PATH
*> \verbatim
*> PATH is CHARACTER*3
*> The LAPACK path name for the routines to be tested.
*> \endverbatim
*>
*> \param[in] NUNIT
*> \verbatim
*> NUNIT is INTEGER
*> The unit number for output.
*> \endverbatim
*
* Authors:
* ========
*
*> \author Univ. of Tennessee
*> \author Univ. of California Berkeley
*> \author Univ. of Colorado Denver
*> \author NAG Ltd.
*
*> \date June 2016
*
*> \ingroup double_eig
*
* =====================================================================
SUBROUTINE DERRED( PATH, NUNIT )
*
* -- LAPACK test routine (version 3.7.0) --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
* June 2016
*
* .. Scalar Arguments ..
CHARACTER*3 PATH
INTEGER NUNIT
* ..
*
* =====================================================================
*
* .. Parameters ..
INTEGER NMAX
DOUBLE PRECISION ONE, ZERO
PARAMETER ( NMAX = 4, ONE = 1.0D0, ZERO = 0.0D0 )
* ..
* .. Local Scalars ..
CHARACTER*2 C2
INTEGER I, IHI, ILO, INFO, J, NS, NT, SDIM
DOUBLE PRECISION ABNRM
* ..
* .. Local Arrays ..
LOGICAL B( NMAX )
INTEGER IW( 2*NMAX )
DOUBLE PRECISION A( NMAX, NMAX ), R1( NMAX ), R2( NMAX ),
$ S( NMAX ), U( NMAX, NMAX ), VL( NMAX, NMAX ),
$ VR( NMAX, NMAX ), VT( NMAX, NMAX ),
$ W( 10*NMAX ), WI( NMAX ), WR( NMAX )
* ..
* .. External Subroutines ..
EXTERNAL CHKXER, DGEES, DGEESX, DGEEV, DGEEVX, DGEJSV,
$ DGESDD, DGESVD
* ..
* .. External Functions ..
LOGICAL DSLECT, LSAMEN
EXTERNAL DSLECT, LSAMEN
* ..
* .. Intrinsic Functions ..
INTRINSIC LEN_TRIM
* ..
* .. Arrays in Common ..
LOGICAL SELVAL( 20 )
DOUBLE PRECISION SELWI( 20 ), SELWR( 20 )
* ..
* .. Scalars in Common ..
LOGICAL LERR, OK
CHARACTER*32 SRNAMT
INTEGER INFOT, NOUT, SELDIM, SELOPT
* ..
* .. Common blocks ..
COMMON / INFOC / INFOT, NOUT, OK, LERR
COMMON / SRNAMC / SRNAMT
COMMON / SSLCT / SELOPT, SELDIM, SELVAL, SELWR, SELWI
* ..
* .. Executable Statements ..
*
NOUT = NUNIT
WRITE( NOUT, FMT = * )
C2 = PATH( 2: 3 )
*
* Initialize A
*
DO 20 J = 1, NMAX
DO 10 I = 1, NMAX
A( I, J ) = ZERO
10 CONTINUE
20 CONTINUE
DO 30 I = 1, NMAX
A( I, I ) = ONE
30 CONTINUE
OK = .TRUE.
NT = 0
*
IF( LSAMEN( 2, C2, 'EV' ) ) THEN
*
* Test DGEEV
*
SRNAMT = 'DGEEV '
INFOT = 1
CALL DGEEV( 'X', 'N', 0, A, 1, WR, WI, VL, 1, VR, 1, W, 1,
$ INFO )
CALL CHKXER( 'DGEEV ', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEEV( 'N', 'X', 0, A, 1, WR, WI, VL, 1, VR, 1, W, 1,
$ INFO )
CALL CHKXER( 'DGEEV ', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DGEEV( 'N', 'N', -1, A, 1, WR, WI, VL, 1, VR, 1, W, 1,
$ INFO )
CALL CHKXER( 'DGEEV ', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DGEEV( 'N', 'N', 2, A, 1, WR, WI, VL, 1, VR, 1, W, 6,
$ INFO )
CALL CHKXER( 'DGEEV ', INFOT, NOUT, LERR, OK )
INFOT = 9
CALL DGEEV( 'V', 'N', 2, A, 2, WR, WI, VL, 1, VR, 1, W, 8,
$ INFO )
CALL CHKXER( 'DGEEV ', INFOT, NOUT, LERR, OK )
INFOT = 11
CALL DGEEV( 'N', 'V', 2, A, 2, WR, WI, VL, 1, VR, 1, W, 8,
$ INFO )
CALL CHKXER( 'DGEEV ', INFOT, NOUT, LERR, OK )
INFOT = 13
CALL DGEEV( 'V', 'V', 1, A, 1, WR, WI, VL, 1, VR, 1, W, 3,
$ INFO )
CALL CHKXER( 'DGEEV ', INFOT, NOUT, LERR, OK )
NT = NT + 7
*
ELSE IF( LSAMEN( 2, C2, 'ES' ) ) THEN
*
* Test DGEES
*
SRNAMT = 'DGEES '
INFOT = 1
CALL DGEES( 'X', 'N', DSLECT, 0, A, 1, SDIM, WR, WI, VL, 1, W,
$ 1, B, INFO )
CALL CHKXER( 'DGEES ', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEES( 'N', 'X', DSLECT, 0, A, 1, SDIM, WR, WI, VL, 1, W,
$ 1, B, INFO )
CALL CHKXER( 'DGEES ', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGEES( 'N', 'S', DSLECT, -1, A, 1, SDIM, WR, WI, VL, 1, W,
$ 1, B, INFO )
CALL CHKXER( 'DGEES ', INFOT, NOUT, LERR, OK )
INFOT = 6
CALL DGEES( 'N', 'S', DSLECT, 2, A, 1, SDIM, WR, WI, VL, 1, W,
$ 6, B, INFO )
CALL CHKXER( 'DGEES ', INFOT, NOUT, LERR, OK )
INFOT = 11
CALL DGEES( 'V', 'S', DSLECT, 2, A, 2, SDIM, WR, WI, VL, 1, W,
$ 6, B, INFO )
CALL CHKXER( 'DGEES ', INFOT, NOUT, LERR, OK )
INFOT = 13
CALL DGEES( 'N', 'S', DSLECT, 1, A, 1, SDIM, WR, WI, VL, 1, W,
$ 2, B, INFO )
CALL CHKXER( 'DGEES ', INFOT, NOUT, LERR, OK )
NT = NT + 6
*
ELSE IF( LSAMEN( 2, C2, 'VX' ) ) THEN
*
* Test DGEEVX
*
SRNAMT = 'DGEEVX'
INFOT = 1
CALL DGEEVX( 'X', 'N', 'N', 'N', 0, A, 1, WR, WI, VL, 1, VR, 1,
$ ILO, IHI, S, ABNRM, R1, R2, W, 1, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEEVX( 'N', 'X', 'N', 'N', 0, A, 1, WR, WI, VL, 1, VR, 1,
$ ILO, IHI, S, ABNRM, R1, R2, W, 1, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DGEEVX( 'N', 'N', 'X', 'N', 0, A, 1, WR, WI, VL, 1, VR, 1,
$ ILO, IHI, S, ABNRM, R1, R2, W, 1, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGEEVX( 'N', 'N', 'N', 'X', 0, A, 1, WR, WI, VL, 1, VR, 1,
$ ILO, IHI, S, ABNRM, R1, R2, W, 1, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DGEEVX( 'N', 'N', 'N', 'N', -1, A, 1, WR, WI, VL, 1, VR,
$ 1, ILO, IHI, S, ABNRM, R1, R2, W, 1, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL DGEEVX( 'N', 'N', 'N', 'N', 2, A, 1, WR, WI, VL, 1, VR, 1,
$ ILO, IHI, S, ABNRM, R1, R2, W, 1, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
INFOT = 11
CALL DGEEVX( 'N', 'V', 'N', 'N', 2, A, 2, WR, WI, VL, 1, VR, 1,
$ ILO, IHI, S, ABNRM, R1, R2, W, 6, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
INFOT = 13
CALL DGEEVX( 'N', 'N', 'V', 'N', 2, A, 2, WR, WI, VL, 1, VR, 1,
$ ILO, IHI, S, ABNRM, R1, R2, W, 6, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
INFOT = 21
CALL DGEEVX( 'N', 'N', 'N', 'N', 1, A, 1, WR, WI, VL, 1, VR, 1,
$ ILO, IHI, S, ABNRM, R1, R2, W, 1, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
INFOT = 21
CALL DGEEVX( 'N', 'V', 'N', 'N', 1, A, 1, WR, WI, VL, 1, VR, 1,
$ ILO, IHI, S, ABNRM, R1, R2, W, 2, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
INFOT = 21
CALL DGEEVX( 'N', 'N', 'V', 'V', 1, A, 1, WR, WI, VL, 1, VR, 1,
$ ILO, IHI, S, ABNRM, R1, R2, W, 3, IW, INFO )
CALL CHKXER( 'DGEEVX', INFOT, NOUT, LERR, OK )
NT = NT + 11
*
ELSE IF( LSAMEN( 2, C2, 'SX' ) ) THEN
*
* Test DGEESX
*
SRNAMT = 'DGEESX'
INFOT = 1
CALL DGEESX( 'X', 'N', DSLECT, 'N', 0, A, 1, SDIM, WR, WI, VL,
$ 1, R1( 1 ), R2( 1 ), W, 1, IW, 1, B, INFO )
CALL CHKXER( 'DGEESX', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEESX( 'N', 'X', DSLECT, 'N', 0, A, 1, SDIM, WR, WI, VL,
$ 1, R1( 1 ), R2( 1 ), W, 1, IW, 1, B, INFO )
CALL CHKXER( 'DGEESX', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGEESX( 'N', 'N', DSLECT, 'X', 0, A, 1, SDIM, WR, WI, VL,
$ 1, R1( 1 ), R2( 1 ), W, 1, IW, 1, B, INFO )
CALL CHKXER( 'DGEESX', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DGEESX( 'N', 'N', DSLECT, 'N', -1, A, 1, SDIM, WR, WI, VL,
$ 1, R1( 1 ), R2( 1 ), W, 1, IW, 1, B, INFO )
CALL CHKXER( 'DGEESX', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL DGEESX( 'N', 'N', DSLECT, 'N', 2, A, 1, SDIM, WR, WI, VL,
$ 1, R1( 1 ), R2( 1 ), W, 6, IW, 1, B, INFO )
CALL CHKXER( 'DGEESX', INFOT, NOUT, LERR, OK )
INFOT = 12
CALL DGEESX( 'V', 'N', DSLECT, 'N', 2, A, 2, SDIM, WR, WI, VL,
$ 1, R1( 1 ), R2( 1 ), W, 6, IW, 1, B, INFO )
CALL CHKXER( 'DGEESX', INFOT, NOUT, LERR, OK )
INFOT = 16
CALL DGEESX( 'N', 'N', DSLECT, 'N', 1, A, 1, SDIM, WR, WI, VL,
$ 1, R1( 1 ), R2( 1 ), W, 2, IW, 1, B, INFO )
CALL CHKXER( 'DGEESX', INFOT, NOUT, LERR, OK )
NT = NT + 7
*
ELSE IF( LSAMEN( 2, C2, 'BD' ) ) THEN
*
* Test DGESVD
*
SRNAMT = 'DGESVD'
INFOT = 1
CALL DGESVD( 'X', 'N', 0, 0, A, 1, S, U, 1, VT, 1, W, 1, INFO )
CALL CHKXER( 'DGESVD', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGESVD( 'N', 'X', 0, 0, A, 1, S, U, 1, VT, 1, W, 1, INFO )
CALL CHKXER( 'DGESVD', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGESVD( 'O', 'O', 0, 0, A, 1, S, U, 1, VT, 1, W, 1, INFO )
CALL CHKXER( 'DGESVD', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DGESVD( 'N', 'N', -1, 0, A, 1, S, U, 1, VT, 1, W, 1,
$ INFO )
CALL CHKXER( 'DGESVD', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGESVD( 'N', 'N', 0, -1, A, 1, S, U, 1, VT, 1, W, 1,
$ INFO )
CALL CHKXER( 'DGESVD', INFOT, NOUT, LERR, OK )
INFOT = 6
CALL DGESVD( 'N', 'N', 2, 1, A, 1, S, U, 1, VT, 1, W, 5, INFO )
CALL CHKXER( 'DGESVD', INFOT, NOUT, LERR, OK )
INFOT = 9
CALL DGESVD( 'A', 'N', 2, 1, A, 2, S, U, 1, VT, 1, W, 5, INFO )
CALL CHKXER( 'DGESVD', INFOT, NOUT, LERR, OK )
INFOT = 11
CALL DGESVD( 'N', 'A', 1, 2, A, 1, S, U, 1, VT, 1, W, 5, INFO )
CALL CHKXER( 'DGESVD', INFOT, NOUT, LERR, OK )
NT = 8
IF( OK ) THEN
WRITE( NOUT, FMT = 9999 )SRNAMT( 1:LEN_TRIM( SRNAMT ) ),
$ NT
ELSE
WRITE( NOUT, FMT = 9998 )
END IF
*
* Test DGESDD
*
SRNAMT = 'DGESDD'
INFOT = 1
CALL DGESDD( 'X', 0, 0, A, 1, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESDD', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGESDD( 'N', -1, 0, A, 1, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESDD', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DGESDD( 'N', 0, -1, A, 1, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESDD', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DGESDD( 'N', 2, 1, A, 1, S, U, 1, VT, 1, W, 5, IW, INFO )
CALL CHKXER( 'DGESDD', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL DGESDD( 'A', 2, 1, A, 2, S, U, 1, VT, 1, W, 5, IW, INFO )
CALL CHKXER( 'DGESDD', INFOT, NOUT, LERR, OK )
INFOT = 10
CALL DGESDD( 'A', 1, 2, A, 1, S, U, 1, VT, 1, W, 5, IW, INFO )
CALL CHKXER( 'DGESDD', INFOT, NOUT, LERR, OK )
NT = 6
IF( OK ) THEN
WRITE( NOUT, FMT = 9999 )SRNAMT( 1:LEN_TRIM( SRNAMT ) ),
$ NT
ELSE
WRITE( NOUT, FMT = 9998 )
END IF
*
* Test DGEJSV
*
SRNAMT = 'DGEJSV'
INFOT = 1
CALL DGEJSV( 'X', 'U', 'V', 'R', 'N', 'N',
$ 0, 0, A, 1, S, U, 1, VT, 1,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEJSV( 'G', 'X', 'V', 'R', 'N', 'N',
$ 0, 0, A, 1, S, U, 1, VT, 1,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DGEJSV( 'G', 'U', 'X', 'R', 'N', 'N',
$ 0, 0, A, 1, S, U, 1, VT, 1,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGEJSV( 'G', 'U', 'V', 'X', 'N', 'N',
$ 0, 0, A, 1, S, U, 1, VT, 1,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DGEJSV( 'G', 'U', 'V', 'R', 'X', 'N',
$ 0, 0, A, 1, S, U, 1, VT, 1,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
INFOT = 6
CALL DGEJSV( 'G', 'U', 'V', 'R', 'N', 'X',
$ 0, 0, A, 1, S, U, 1, VT, 1,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL DGEJSV( 'G', 'U', 'V', 'R', 'N', 'N',
$ -1, 0, A, 1, S, U, 1, VT, 1,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL DGEJSV( 'G', 'U', 'V', 'R', 'N', 'N',
$ 0, -1, A, 1, S, U, 1, VT, 1,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
INFOT = 10
CALL DGEJSV( 'G', 'U', 'V', 'R', 'N', 'N',
$ 2, 1, A, 1, S, U, 1, VT, 1,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
INFOT = 13
CALL DGEJSV( 'G', 'U', 'V', 'R', 'N', 'N',
$ 2, 2, A, 2, S, U, 1, VT, 2,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
INFOT = 15
CALL DGEJSV( 'G', 'U', 'V', 'R', 'N', 'N',
$ 2, 2, A, 2, S, U, 2, VT, 1,
$ W, 1, IW, INFO)
CALL CHKXER( 'DGEJSV', INFOT, NOUT, LERR, OK )
NT = 11
IF( OK ) THEN
WRITE( NOUT, FMT = 9999 )SRNAMT( 1:LEN_TRIM( SRNAMT ) ),
$ NT
ELSE
WRITE( NOUT, FMT = 9998 )
END IF
*
* Test DGESVDX
*
SRNAMT = 'DGESVDX'
INFOT = 1
CALL DGESVDX( 'X', 'N', 'A', 0, 0, A, 1, ZERO, ZERO,
$ 0, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGESVDX( 'N', 'X', 'A', 0, 0, A, 1, ZERO, ZERO,
$ 0, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DGESVDX( 'N', 'N', 'X', 0, 0, A, 1, ZERO, ZERO,
$ 0, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGESVDX( 'N', 'N', 'A', -1, 0, A, 1, ZERO, ZERO,
$ 0, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DGESVDX( 'N', 'N', 'A', 0, -1, A, 1, ZERO, ZERO,
$ 0, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL DGESVDX( 'N', 'N', 'A', 2, 1, A, 1, ZERO, ZERO,
$ 0, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL DGESVDX( 'N', 'N', 'V', 2, 1, A, 2, -ONE, ZERO,
$ 0, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 9
CALL DGESVDX( 'N', 'N', 'V', 2, 1, A, 2, ONE, ZERO,
$ 0, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 10
CALL DGESVDX( 'N', 'N', 'I', 2, 2, A, 2, ZERO, ZERO,
$ 0, 1, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 11
CALL DGESVDX( 'V', 'N', 'I', 2, 2, A, 2, ZERO, ZERO,
$ 1, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 15
CALL DGESVDX( 'V', 'N', 'A', 2, 2, A, 2, ZERO, ZERO,
$ 0, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
INFOT = 17
CALL DGESVDX( 'N', 'V', 'A', 2, 2, A, 2, ZERO, ZERO,
$ 0, 0, NS, S, U, 1, VT, 1, W, 1, IW, INFO )
CALL CHKXER( 'DGESVDX', INFOT, NOUT, LERR, OK )
NT = 12
IF( OK ) THEN
WRITE( NOUT, FMT = 9999 )SRNAMT( 1:LEN_TRIM( SRNAMT ) ),
$ NT
ELSE
WRITE( NOUT, FMT = 9998 )
END IF
END IF
*
* Print a summary line.
*
IF( .NOT.LSAMEN( 2, C2, 'BD' ) ) THEN
IF( OK ) THEN
WRITE( NOUT, FMT = 9999 )SRNAMT( 1:LEN_TRIM( SRNAMT ) ),
$ NT
ELSE
WRITE( NOUT, FMT = 9998 )
END IF
END IF
*
9999 FORMAT( 1X, A, ' passed the tests of the error exits (', I3,
$ ' tests done)' )
9998 FORMAT( ' *** ', A, ' failed the tests of the error exits ***' )
RETURN
*
* End of DERRED
END