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lapack/TESTING/EIG/zdrvbd.f
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Julie e18d437924 Making LAPACK's code eternal... no more version and date in source files. 
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*> \brief \b ZDRVBD
*
* =========== DOCUMENTATION ===========
*
* Online html documentation available at
* http://www.netlib.org/lapack/explore-html/
*
* Definition:
* ===========
*
* SUBROUTINE ZDRVBD( NSIZES, MM, NN, NTYPES, DOTYPE, ISEED, THRESH,
* A, LDA, U, LDU, VT, LDVT, ASAV, USAV, VTSAV, S,
* SSAV, E, WORK, LWORK, RWORK, IWORK, NOUNIT,
* INFO )
*
* .. Scalar Arguments ..
* INTEGER INFO, LDA, LDU, LDVT, LWORK, NOUNIT, NSIZES,
* $ NTYPES
* DOUBLE PRECISION THRESH
* ..
* .. Array Arguments ..
* LOGICAL DOTYPE( * )
* INTEGER ISEED( 4 ), IWORK( * ), MM( * ), NN( * )
* DOUBLE PRECISION E( * ), RWORK( * ), S( * ), SSAV( * )
* COMPLEX*16 A( LDA, * ), ASAV( LDA, * ), U( LDU, * ),
* $ USAV( LDU, * ), VT( LDVT, * ),
* $ VTSAV( LDVT, * ), WORK( * )
* ..
*
*
*> \par Purpose:
* =============
*>
*> \verbatim
*>
*> ZDRVBD checks the singular value decomposition (SVD) driver ZGESVD,
*> ZGESDD, ZGESVJ, ZGEJSV, ZGESVDX, and ZGESVDQ.
*>
*> ZGESVD and ZGESDD factors A = U diag(S) VT, where U and VT are
*> unitary and diag(S) is diagonal with the entries of the array S on
*> its diagonal. The entries of S are the singular values, nonnegative
*> and stored in decreasing order. U and VT can be optionally not
*> computed, overwritten on A, or computed partially.
*>
*> A is M by N. Let MNMIN = min( M, N ). S has dimension MNMIN.
*> U can be M by M or M by MNMIN. VT can be N by N or MNMIN by N.
*>
*> When ZDRVBD is called, a number of matrix "sizes" (M's and N's)
*> and a number of matrix "types" are specified. For each size (M,N)
*> and each type of matrix, and for the minimal workspace as well as
*> workspace adequate to permit blocking, an M x N matrix "A" will be
*> generated and used to test the SVD routines. For each matrix, A will
*> be factored as A = U diag(S) VT and the following 12 tests computed:
*>
*> Test for ZGESVD:
*>
*> (1) | A - U diag(S) VT | / ( |A| max(M,N) ulp )
*>
*> (2) | I - U'U | / ( M ulp )
*>
*> (3) | I - VT VT' | / ( N ulp )
*>
*> (4) S contains MNMIN nonnegative values in decreasing order.
*> (Return 0 if true, 1/ULP if false.)
*>
*> (5) | U - Upartial | / ( M ulp ) where Upartial is a partially
*> computed U.
*>
*> (6) | VT - VTpartial | / ( N ulp ) where VTpartial is a partially
*> computed VT.
*>
*> (7) | S - Spartial | / ( MNMIN ulp |S| ) where Spartial is the
*> vector of singular values from the partial SVD
*>
*> Test for ZGESDD:
*>
*> (8) | A - U diag(S) VT | / ( |A| max(M,N) ulp )
*>
*> (9) | I - U'U | / ( M ulp )
*>
*> (10) | I - VT VT' | / ( N ulp )
*>
*> (11) S contains MNMIN nonnegative values in decreasing order.
*> (Return 0 if true, 1/ULP if false.)
*>
*> (12) | U - Upartial | / ( M ulp ) where Upartial is a partially
*> computed U.
*>
*> (13) | VT - VTpartial | / ( N ulp ) where VTpartial is a partially
*> computed VT.
*>
*> (14) | S - Spartial | / ( MNMIN ulp |S| ) where Spartial is the
*> vector of singular values from the partial SVD
*>
*> Test for ZGESVDQ:
*>
*> (36) | A - U diag(S) VT | / ( |A| max(M,N) ulp )
*>
*> (37) | I - U'U | / ( M ulp )
*>
*> (38) | I - VT VT' | / ( N ulp )
*>
*> (39) S contains MNMIN nonnegative values in decreasing order.
*> (Return 0 if true, 1/ULP if false.)
*>
*> Test for ZGESVJ:
*>
*> (15) | A - U diag(S) VT | / ( |A| max(M,N) ulp )
*>
*> (16) | I - U'U | / ( M ulp )
*>
*> (17) | I - VT VT' | / ( N ulp )
*>
*> (18) S contains MNMIN nonnegative values in decreasing order.
*> (Return 0 if true, 1/ULP if false.)
*>
*> Test for ZGEJSV:
*>
*> (19) | A - U diag(S) VT | / ( |A| max(M,N) ulp )
*>
*> (20) | I - U'U | / ( M ulp )
*>
*> (21) | I - VT VT' | / ( N ulp )
*>
*> (22) S contains MNMIN nonnegative values in decreasing order.
*> (Return 0 if true, 1/ULP if false.)
*>
*> Test for ZGESVDX( 'V', 'V', 'A' )/ZGESVDX( 'N', 'N', 'A' )
*>
*> (23) | A - U diag(S) VT | / ( |A| max(M,N) ulp )
*>
*> (24) | I - U'U | / ( M ulp )
*>
*> (25) | I - VT VT' | / ( N ulp )
*>
*> (26) S contains MNMIN nonnegative values in decreasing order.
*> (Return 0 if true, 1/ULP if false.)
*>
*> (27) | U - Upartial | / ( M ulp ) where Upartial is a partially
*> computed U.
*>
*> (28) | VT - VTpartial | / ( N ulp ) where VTpartial is a partially
*> computed VT.
*>
*> (29) | S - Spartial | / ( MNMIN ulp |S| ) where Spartial is the
*> vector of singular values from the partial SVD
*>
*> Test for ZGESVDX( 'V', 'V', 'I' )
*>
*> (30) | U' A VT''' - diag(S) | / ( |A| max(M,N) ulp )
*>
*> (31) | I - U'U | / ( M ulp )
*>
*> (32) | I - VT VT' | / ( N ulp )
*>
*> Test for ZGESVDX( 'V', 'V', 'V' )
*>
*> (33) | U' A VT''' - diag(S) | / ( |A| max(M,N) ulp )
*>
*> (34) | I - U'U | / ( M ulp )
*>
*> (35) | I - VT VT' | / ( N ulp )
*>
*> The "sizes" are specified by the arrays MM(1:NSIZES) and
*> NN(1:NSIZES); the value of each element pair (MM(j),NN(j))
*> specifies one size. The "types" are specified by a logical array
*> DOTYPE( 1:NTYPES ); if DOTYPE(j) is .TRUE., then matrix type "j"
*> will be generated.
*> Currently, the list of possible types is:
*>
*> (1) The zero matrix.
*> (2) The identity matrix.
*> (3) A matrix of the form U D V, where U and V are unitary and
*> D has evenly spaced entries 1, ..., ULP with random signs
*> on the diagonal.
*> (4) Same as (3), but multiplied by the underflow-threshold / ULP.
*> (5) Same as (3), but multiplied by the overflow-threshold * ULP.
*> \endverbatim
*
* Arguments:
* ==========
*
*> \param[in] NSIZES
*> \verbatim
*> NSIZES is INTEGER
*> The number of sizes of matrices to use. If it is zero,
*> ZDRVBD does nothing. It must be at least zero.
*> \endverbatim
*>
*> \param[in] MM
*> \verbatim
*> MM is INTEGER array, dimension (NSIZES)
*> An array containing the matrix "heights" to be used. For
*> each j=1,...,NSIZES, if MM(j) is zero, then MM(j) and NN(j)
*> will be ignored. The MM(j) values must be at least zero.
*> \endverbatim
*>
*> \param[in] NN
*> \verbatim
*> NN is INTEGER array, dimension (NSIZES)
*> An array containing the matrix "widths" to be used. For
*> each j=1,...,NSIZES, if NN(j) is zero, then MM(j) and NN(j)
*> will be ignored. The NN(j) values must be at least zero.
*> \endverbatim
*>
*> \param[in] NTYPES
*> \verbatim
*> NTYPES is INTEGER
*> The number of elements in DOTYPE. If it is zero, ZDRVBD
*> does nothing. It must be at least zero. If it is MAXTYP+1
*> and NSIZES is 1, then an additional type, MAXTYP+1 is
*> defined, which is to use whatever matrices are in A and B.
*> This is only useful if DOTYPE(1:MAXTYP) is .FALSE. and
*> DOTYPE(MAXTYP+1) is .TRUE. .
*> \endverbatim
*>
*> \param[in] DOTYPE
*> \verbatim
*> DOTYPE is LOGICAL array, dimension (NTYPES)
*> If DOTYPE(j) is .TRUE., then for each size (m,n), a matrix
*> of type j will be generated. If NTYPES is smaller than the
*> maximum number of types defined (PARAMETER MAXTYP), then
*> types NTYPES+1 through MAXTYP will not be generated. If
*> NTYPES is larger than MAXTYP, DOTYPE(MAXTYP+1) through
*> DOTYPE(NTYPES) will be ignored.
*> \endverbatim
*>
*> \param[in,out] ISEED
*> \verbatim
*> ISEED is INTEGER array, dimension (4)
*> On entry ISEED specifies the seed of the random number
*> generator. The array elements should be between 0 and 4095;
*> if not they will be reduced mod 4096. Also, ISEED(4) must
*> be odd. The random number generator uses a linear
*> congruential sequence limited to small integers, and so
*> should produce machine independent random numbers. The
*> values of ISEED are changed on exit, and can be used in the
*> next call to ZDRVBD to continue the same random number
*> sequence.
*> \endverbatim
*>
*> \param[in] THRESH
*> \verbatim
*> THRESH is DOUBLE PRECISION
*> A test will count as "failed" if the "error", computed as
*> described above, exceeds THRESH. Note that the error
*> is scaled to be O(1), so THRESH should be a reasonably
*> small multiple of 1, e.g., 10 or 100. In particular,
*> it should not depend on the precision (single vs. double)
*> or the size of the matrix. It must be at least zero.
*> \endverbatim
*>
*> \param[out] A
*> \verbatim
*> A is COMPLEX*16 array, dimension (LDA,max(NN))
*> Used to hold the matrix whose singular values are to be
*> computed. On exit, A contains the last matrix actually
*> used.
*> \endverbatim
*>
*> \param[in] LDA
*> \verbatim
*> LDA is INTEGER
*> The leading dimension of A. It must be at
*> least 1 and at least max( MM ).
*> \endverbatim
*>
*> \param[out] U
*> \verbatim
*> U is COMPLEX*16 array, dimension (LDU,max(MM))
*> Used to hold the computed matrix of right singular vectors.
*> On exit, U contains the last such vectors actually computed.
*> \endverbatim
*>
*> \param[in] LDU
*> \verbatim
*> LDU is INTEGER
*> The leading dimension of U. It must be at
*> least 1 and at least max( MM ).
*> \endverbatim
*>
*> \param[out] VT
*> \verbatim
*> VT is COMPLEX*16 array, dimension (LDVT,max(NN))
*> Used to hold the computed matrix of left singular vectors.
*> On exit, VT contains the last such vectors actually computed.
*> \endverbatim
*>
*> \param[in] LDVT
*> \verbatim
*> LDVT is INTEGER
*> The leading dimension of VT. It must be at
*> least 1 and at least max( NN ).
*> \endverbatim
*>
*> \param[out] ASAV
*> \verbatim
*> ASAV is COMPLEX*16 array, dimension (LDA,max(NN))
*> Used to hold a different copy of the matrix whose singular
*> values are to be computed. On exit, A contains the last
*> matrix actually used.
*> \endverbatim
*>
*> \param[out] USAV
*> \verbatim
*> USAV is COMPLEX*16 array, dimension (LDU,max(MM))
*> Used to hold a different copy of the computed matrix of
*> right singular vectors. On exit, USAV contains the last such
*> vectors actually computed.
*> \endverbatim
*>
*> \param[out] VTSAV
*> \verbatim
*> VTSAV is COMPLEX*16 array, dimension (LDVT,max(NN))
*> Used to hold a different copy of the computed matrix of
*> left singular vectors. On exit, VTSAV contains the last such
*> vectors actually computed.
*> \endverbatim
*>
*> \param[out] S
*> \verbatim
*> S is DOUBLE PRECISION array, dimension (max(min(MM,NN)))
*> Contains the computed singular values.
*> \endverbatim
*>
*> \param[out] SSAV
*> \verbatim
*> SSAV is DOUBLE PRECISION array, dimension (max(min(MM,NN)))
*> Contains another copy of the computed singular values.
*> \endverbatim
*>
*> \param[out] E
*> \verbatim
*> E is DOUBLE PRECISION array, dimension (max(min(MM,NN)))
*> Workspace for ZGESVD.
*> \endverbatim
*>
*> \param[out] WORK
*> \verbatim
*> WORK is COMPLEX*16 array, dimension (LWORK)
*> \endverbatim
*>
*> \param[in] LWORK
*> \verbatim
*> LWORK is INTEGER
*> The number of entries in WORK. This must be at least
*> MAX(3*MIN(M,N)+MAX(M,N)**2,5*MIN(M,N),3*MAX(M,N)) for all
*> pairs (M,N)=(MM(j),NN(j))
*> \endverbatim
*>
*> \param[out] RWORK
*> \verbatim
*> RWORK is DOUBLE PRECISION array,
*> dimension ( 5*max(max(MM,NN)) )
*> \endverbatim
*>
*> \param[out] IWORK
*> \verbatim
*> IWORK is INTEGER array, dimension at least 8*min(M,N)
*> \endverbatim
*>
*> \param[in] NOUNIT
*> \verbatim
*> NOUNIT is INTEGER
*> The FORTRAN unit number for printing out error messages
*> (e.g., if a routine returns IINFO not equal to 0.)
*> \endverbatim
*>
*> \param[out] INFO
*> \verbatim
*> INFO is INTEGER
*> If 0, then everything ran OK.
*> -1: NSIZES < 0
*> -2: Some MM(j) < 0
*> -3: Some NN(j) < 0
*> -4: NTYPES < 0
*> -7: THRESH < 0
*> -10: LDA < 1 or LDA < MMAX, where MMAX is max( MM(j) ).
*> -12: LDU < 1 or LDU < MMAX.
*> -14: LDVT < 1 or LDVT < NMAX, where NMAX is max( NN(j) ).
*> -21: LWORK too small.
*> If ZLATMS, or ZGESVD returns an error code, the
*> absolute value of it is returned.
*> \endverbatim
*
* Authors:
* ========
*
*> \author Univ. of Tennessee
*> \author Univ. of California Berkeley
*> \author Univ. of Colorado Denver
*> \author NAG Ltd.
*
*> \ingroup complex16_eig
*
* =====================================================================
SUBROUTINE ZDRVBD( NSIZES, MM, NN, NTYPES, DOTYPE, ISEED, THRESH,
$ A, LDA, U, LDU, VT, LDVT, ASAV, USAV, VTSAV, S,
$ SSAV, E, WORK, LWORK, RWORK, IWORK, NOUNIT,
$ INFO )
*
* -- LAPACK test routine --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*
IMPLICIT NONE
*
* .. Scalar Arguments ..
INTEGER INFO, LDA, LDU, LDVT, LWORK, NOUNIT, NSIZES,
$ NTYPES
DOUBLE PRECISION THRESH
* ..
* .. Array Arguments ..
LOGICAL DOTYPE( * )
INTEGER ISEED( 4 ), IWORK( * ), MM( * ), NN( * )
DOUBLE PRECISION E( * ), RWORK( * ), S( * ), SSAV( * )
COMPLEX*16 A( LDA, * ), ASAV( LDA, * ), U( LDU, * ),
$ USAV( LDU, * ), VT( LDVT, * ),
$ VTSAV( LDVT, * ), WORK( * )
* ..
*
* =====================================================================
*
* .. Parameters ..
DOUBLE PRECISION ZERO, ONE, TWO, HALF
PARAMETER ( ZERO = 0.0D0, ONE = 1.0D0, TWO = 2.0D0,
$ HALF = 0.5D0 )
COMPLEX*16 CZERO, CONE
PARAMETER ( CZERO = ( 0.0D+0, 0.0D+0 ),
$ CONE = ( 1.0D+0, 0.0D+0 ) )
INTEGER MAXTYP
PARAMETER ( MAXTYP = 5 )
* ..
* .. Local Scalars ..
LOGICAL BADMM, BADNN
CHARACTER JOBQ, JOBU, JOBVT, RANGE
INTEGER I, IINFO, IJQ, IJU, IJVT, IL, IU, ITEMP,
$ IWSPC, IWTMP, J, JSIZE, JTYPE, LSWORK, M,
$ MINWRK, MMAX, MNMAX, MNMIN, MTYPES, N,
$ NERRS, NFAIL, NMAX, NS, NSI, NSV, NTEST,
$ NTESTF, NTESTT, LRWORK
DOUBLE PRECISION ANORM, DIF, DIV, OVFL, RTUNFL, ULP, ULPINV,
$ UNFL, VL, VU
* ..
* .. Local Scalars for ZGESVDQ ..
INTEGER LIWORK, NUMRANK
* ..
* .. Local Arrays ..
CHARACTER CJOB( 4 ), CJOBR( 3 ), CJOBV( 2 )
INTEGER IOLDSD( 4 ), ISEED2( 4 )
DOUBLE PRECISION RESULT( 39 )
* ..
* .. External Functions ..
DOUBLE PRECISION DLAMCH, DLARND
EXTERNAL DLAMCH, DLARND
* ..
* .. External Subroutines ..
EXTERNAL ALASVM, XERBLA, ZBDT01, ZBDT05, ZGESDD,
$ ZGESVD, ZGESVDQ, ZGESVJ, ZGEJSV, ZGESVDX,
$ ZLACPY, ZLASET, ZLATMS, ZUNT01, ZUNT03
* ..
* .. Intrinsic Functions ..
INTRINSIC ABS, DBLE, MAX, MIN
* ..
* .. Scalars in Common ..
CHARACTER*32 SRNAMT
* ..
* .. Common blocks ..
COMMON / SRNAMC / SRNAMT
* ..
* .. Data statements ..
DATA CJOB / 'N', 'O', 'S', 'A' /
DATA CJOBR / 'A', 'V', 'I' /
DATA CJOBV / 'N', 'V' /
* ..
* .. Executable Statements ..
*
* Check for errors
*
INFO = 0
*
* Important constants
*
NERRS = 0
NTESTT = 0
NTESTF = 0
BADMM = .FALSE.
BADNN = .FALSE.
MMAX = 1
NMAX = 1
MNMAX = 1
MINWRK = 1
DO 10 J = 1, NSIZES
MMAX = MAX( MMAX, MM( J ) )
IF( MM( J ).LT.0 )
$ BADMM = .TRUE.
NMAX = MAX( NMAX, NN( J ) )
IF( NN( J ).LT.0 )
$ BADNN = .TRUE.
MNMAX = MAX( MNMAX, MIN( MM( J ), NN( J ) ) )
MINWRK = MAX( MINWRK, MAX( 3*MIN( MM( J ),
$ NN( J ) )+MAX( MM( J ), NN( J ) )**2, 5*MIN( MM( J ),
$ NN( J ) ), 3*MAX( MM( J ), NN( J ) ) ) )
10 CONTINUE
*
* Check for errors
*
IF( NSIZES.LT.0 ) THEN
INFO = -1
ELSE IF( BADMM ) THEN
INFO = -2
ELSE IF( BADNN ) THEN
INFO = -3
ELSE IF( NTYPES.LT.0 ) THEN
INFO = -4
ELSE IF( LDA.LT.MAX( 1, MMAX ) ) THEN
INFO = -10
ELSE IF( LDU.LT.MAX( 1, MMAX ) ) THEN
INFO = -12
ELSE IF( LDVT.LT.MAX( 1, NMAX ) ) THEN
INFO = -14
ELSE IF( MINWRK.GT.LWORK ) THEN
INFO = -21
END IF
*
IF( INFO.NE.0 ) THEN
CALL XERBLA( 'ZDRVBD', -INFO )
RETURN
END IF
*
* Quick return if nothing to do
*
IF( NSIZES.EQ.0 .OR. NTYPES.EQ.0 )
$ RETURN
*
* More Important constants
*
UNFL = DLAMCH( 'S' )
OVFL = ONE / UNFL
ULP = DLAMCH( 'E' )
ULPINV = ONE / ULP
RTUNFL = SQRT( UNFL )
*
* Loop over sizes, types
*
NERRS = 0
*
DO 230 JSIZE = 1, NSIZES
M = MM( JSIZE )
N = NN( JSIZE )
MNMIN = MIN( M, N )
*
IF( NSIZES.NE.1 ) THEN
MTYPES = MIN( MAXTYP, NTYPES )
ELSE
MTYPES = MIN( MAXTYP+1, NTYPES )
END IF
*
DO 220 JTYPE = 1, MTYPES
IF( .NOT.DOTYPE( JTYPE ) )
$ GO TO 220
NTEST = 0
*
DO 20 J = 1, 4
IOLDSD( J ) = ISEED( J )
20 CONTINUE
*
* Compute "A"
*
IF( MTYPES.GT.MAXTYP )
$ GO TO 50
*
IF( JTYPE.EQ.1 ) THEN
*
* Zero matrix
*
CALL ZLASET( 'Full', M, N, CZERO, CZERO, A, LDA )
DO 30 I = 1, MIN( M, N )
S( I ) = ZERO
30 CONTINUE
*
ELSE IF( JTYPE.EQ.2 ) THEN
*
* Identity matrix
*
CALL ZLASET( 'Full', M, N, CZERO, CONE, A, LDA )
DO 40 I = 1, MIN( M, N )
S( I ) = ONE
40 CONTINUE
*
ELSE
*
* (Scaled) random matrix
*
IF( JTYPE.EQ.3 )
$ ANORM = ONE
IF( JTYPE.EQ.4 )
$ ANORM = UNFL / ULP
IF( JTYPE.EQ.5 )
$ ANORM = OVFL*ULP
CALL ZLATMS( M, N, 'U', ISEED, 'N', S, 4, DBLE( MNMIN ),
$ ANORM, M-1, N-1, 'N', A, LDA, WORK, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9996 )'Generator', IINFO, M, N,
$ JTYPE, IOLDSD
INFO = ABS( IINFO )
RETURN
END IF
END IF
*
50 CONTINUE
CALL ZLACPY( 'F', M, N, A, LDA, ASAV, LDA )
*
* Do for minimal and adequate (for blocking) workspace
*
DO 210 IWSPC = 1, 4
*
* Test for ZGESVD
*
IWTMP = 2*MIN( M, N )+MAX( M, N )
LSWORK = IWTMP + ( IWSPC-1 )*( LWORK-IWTMP ) / 3
LSWORK = MIN( LSWORK, LWORK )
LSWORK = MAX( LSWORK, 1 )
IF( IWSPC.EQ.4 )
$ LSWORK = LWORK
*
DO 60 J = 1, 35
RESULT( J ) = -ONE
60 CONTINUE
*
* Factorize A
*
IF( IWSPC.GT.1 )
$ CALL ZLACPY( 'F', M, N, ASAV, LDA, A, LDA )
SRNAMT = 'ZGESVD'
CALL ZGESVD( 'A', 'A', M, N, A, LDA, SSAV, USAV, LDU,
$ VTSAV, LDVT, WORK, LSWORK, RWORK, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9995 )'GESVD', IINFO, M, N,
$ JTYPE, LSWORK, IOLDSD
INFO = ABS( IINFO )
RETURN
END IF
*
* Do tests 1--4
*
CALL ZBDT01( M, N, 0, ASAV, LDA, USAV, LDU, SSAV, E,
$ VTSAV, LDVT, WORK, RWORK, RESULT( 1 ) )
IF( M.NE.0 .AND. N.NE.0 ) THEN
CALL ZUNT01( 'Columns', MNMIN, M, USAV, LDU, WORK,
$ LWORK, RWORK, RESULT( 2 ) )
CALL ZUNT01( 'Rows', MNMIN, N, VTSAV, LDVT, WORK,
$ LWORK, RWORK, RESULT( 3 ) )
END IF
RESULT( 4 ) = 0
DO 70 I = 1, MNMIN - 1
IF( SSAV( I ).LT.SSAV( I+1 ) )
$ RESULT( 4 ) = ULPINV
IF( SSAV( I ).LT.ZERO )
$ RESULT( 4 ) = ULPINV
70 CONTINUE
IF( MNMIN.GE.1 ) THEN
IF( SSAV( MNMIN ).LT.ZERO )
$ RESULT( 4 ) = ULPINV
END IF
*
* Do partial SVDs, comparing to SSAV, USAV, and VTSAV
*
RESULT( 5 ) = ZERO
RESULT( 6 ) = ZERO
RESULT( 7 ) = ZERO
DO 100 IJU = 0, 3
DO 90 IJVT = 0, 3
IF( ( IJU.EQ.3 .AND. IJVT.EQ.3 ) .OR.
$ ( IJU.EQ.1 .AND. IJVT.EQ.1 ) )GO TO 90
JOBU = CJOB( IJU+1 )
JOBVT = CJOB( IJVT+1 )
CALL ZLACPY( 'F', M, N, ASAV, LDA, A, LDA )
SRNAMT = 'ZGESVD'
CALL ZGESVD( JOBU, JOBVT, M, N, A, LDA, S, U, LDU,
$ VT, LDVT, WORK, LSWORK, RWORK, IINFO )
*
* Compare U
*
DIF = ZERO
IF( M.GT.0 .AND. N.GT.0 ) THEN
IF( IJU.EQ.1 ) THEN
CALL ZUNT03( 'C', M, MNMIN, M, MNMIN, USAV,
$ LDU, A, LDA, WORK, LWORK, RWORK,
$ DIF, IINFO )
ELSE IF( IJU.EQ.2 ) THEN
CALL ZUNT03( 'C', M, MNMIN, M, MNMIN, USAV,
$ LDU, U, LDU, WORK, LWORK, RWORK,
$ DIF, IINFO )
ELSE IF( IJU.EQ.3 ) THEN
CALL ZUNT03( 'C', M, M, M, MNMIN, USAV, LDU,
$ U, LDU, WORK, LWORK, RWORK, DIF,
$ IINFO )
END IF
END IF
RESULT( 5 ) = MAX( RESULT( 5 ), DIF )
*
* Compare VT
*
DIF = ZERO
IF( M.GT.0 .AND. N.GT.0 ) THEN
IF( IJVT.EQ.1 ) THEN
CALL ZUNT03( 'R', N, MNMIN, N, MNMIN, VTSAV,
$ LDVT, A, LDA, WORK, LWORK,
$ RWORK, DIF, IINFO )
ELSE IF( IJVT.EQ.2 ) THEN
CALL ZUNT03( 'R', N, MNMIN, N, MNMIN, VTSAV,
$ LDVT, VT, LDVT, WORK, LWORK,
$ RWORK, DIF, IINFO )
ELSE IF( IJVT.EQ.3 ) THEN
CALL ZUNT03( 'R', N, N, N, MNMIN, VTSAV,
$ LDVT, VT, LDVT, WORK, LWORK,
$ RWORK, DIF, IINFO )
END IF
END IF
RESULT( 6 ) = MAX( RESULT( 6 ), DIF )
*
* Compare S
*
DIF = ZERO
DIV = MAX( DBLE( MNMIN )*ULP*S( 1 ),
$ DLAMCH( 'Safe minimum' ) )
DO 80 I = 1, MNMIN - 1
IF( SSAV( I ).LT.SSAV( I+1 ) )
$ DIF = ULPINV
IF( SSAV( I ).LT.ZERO )
$ DIF = ULPINV
DIF = MAX( DIF, ABS( SSAV( I )-S( I ) ) / DIV )
80 CONTINUE
RESULT( 7 ) = MAX( RESULT( 7 ), DIF )
90 CONTINUE
100 CONTINUE
*
* Test for ZGESDD
*
IWTMP = 2*MNMIN*MNMIN + 2*MNMIN + MAX( M, N )
LSWORK = IWTMP + ( IWSPC-1 )*( LWORK-IWTMP ) / 3
LSWORK = MIN( LSWORK, LWORK )
LSWORK = MAX( LSWORK, 1 )
IF( IWSPC.EQ.4 )
$ LSWORK = LWORK
*
* Factorize A
*
CALL ZLACPY( 'F', M, N, ASAV, LDA, A, LDA )
SRNAMT = 'ZGESDD'
CALL ZGESDD( 'A', M, N, A, LDA, SSAV, USAV, LDU, VTSAV,
$ LDVT, WORK, LSWORK, RWORK, IWORK, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9995 )'GESDD', IINFO, M, N,
$ JTYPE, LSWORK, IOLDSD
INFO = ABS( IINFO )
RETURN
END IF
*
* Do tests 1--4
*
CALL ZBDT01( M, N, 0, ASAV, LDA, USAV, LDU, SSAV, E,
$ VTSAV, LDVT, WORK, RWORK, RESULT( 8 ) )
IF( M.NE.0 .AND. N.NE.0 ) THEN
CALL ZUNT01( 'Columns', MNMIN, M, USAV, LDU, WORK,
$ LWORK, RWORK, RESULT( 9 ) )
CALL ZUNT01( 'Rows', MNMIN, N, VTSAV, LDVT, WORK,
$ LWORK, RWORK, RESULT( 10 ) )
END IF
RESULT( 11 ) = 0
DO 110 I = 1, MNMIN - 1
IF( SSAV( I ).LT.SSAV( I+1 ) )
$ RESULT( 11 ) = ULPINV
IF( SSAV( I ).LT.ZERO )
$ RESULT( 11 ) = ULPINV
110 CONTINUE
IF( MNMIN.GE.1 ) THEN
IF( SSAV( MNMIN ).LT.ZERO )
$ RESULT( 11 ) = ULPINV
END IF
*
* Do partial SVDs, comparing to SSAV, USAV, and VTSAV
*
RESULT( 12 ) = ZERO
RESULT( 13 ) = ZERO
RESULT( 14 ) = ZERO
DO 130 IJQ = 0, 2
JOBQ = CJOB( IJQ+1 )
CALL ZLACPY( 'F', M, N, ASAV, LDA, A, LDA )
SRNAMT = 'ZGESDD'
CALL ZGESDD( JOBQ, M, N, A, LDA, S, U, LDU, VT, LDVT,
$ WORK, LSWORK, RWORK, IWORK, IINFO )
*
* Compare U
*
DIF = ZERO
IF( M.GT.0 .AND. N.GT.0 ) THEN
IF( IJQ.EQ.1 ) THEN
IF( M.GE.N ) THEN
CALL ZUNT03( 'C', M, MNMIN, M, MNMIN, USAV,
$ LDU, A, LDA, WORK, LWORK, RWORK,
$ DIF, IINFO )
ELSE
CALL ZUNT03( 'C', M, MNMIN, M, MNMIN, USAV,
$ LDU, U, LDU, WORK, LWORK, RWORK,
$ DIF, IINFO )
END IF
ELSE IF( IJQ.EQ.2 ) THEN
CALL ZUNT03( 'C', M, MNMIN, M, MNMIN, USAV, LDU,
$ U, LDU, WORK, LWORK, RWORK, DIF,
$ IINFO )
END IF
END IF
RESULT( 12 ) = MAX( RESULT( 12 ), DIF )
*
* Compare VT
*
DIF = ZERO
IF( M.GT.0 .AND. N.GT.0 ) THEN
IF( IJQ.EQ.1 ) THEN
IF( M.GE.N ) THEN
CALL ZUNT03( 'R', N, MNMIN, N, MNMIN, VTSAV,
$ LDVT, VT, LDVT, WORK, LWORK,
$ RWORK, DIF, IINFO )
ELSE
CALL ZUNT03( 'R', N, MNMIN, N, MNMIN, VTSAV,
$ LDVT, A, LDA, WORK, LWORK,
$ RWORK, DIF, IINFO )
END IF
ELSE IF( IJQ.EQ.2 ) THEN
CALL ZUNT03( 'R', N, MNMIN, N, MNMIN, VTSAV,
$ LDVT, VT, LDVT, WORK, LWORK, RWORK,
$ DIF, IINFO )
END IF
END IF
RESULT( 13 ) = MAX( RESULT( 13 ), DIF )
*
* Compare S
*
DIF = ZERO
DIV = MAX( DBLE( MNMIN )*ULP*S( 1 ),
$ DLAMCH( 'Safe minimum' ) )
DO 120 I = 1, MNMIN - 1
IF( SSAV( I ).LT.SSAV( I+1 ) )
$ DIF = ULPINV
IF( SSAV( I ).LT.ZERO )
$ DIF = ULPINV
DIF = MAX( DIF, ABS( SSAV( I )-S( I ) ) / DIV )
120 CONTINUE
RESULT( 14 ) = MAX( RESULT( 14 ), DIF )
130 CONTINUE
*
* Test ZGESVDQ
* Note: ZGESVDQ only works for M >= N
*
RESULT( 36 ) = ZERO
RESULT( 37 ) = ZERO
RESULT( 38 ) = ZERO
RESULT( 39 ) = ZERO
*
IF( M.GE.N ) THEN
IWTMP = 2*MNMIN*MNMIN + 2*MNMIN + MAX( M, N )
LSWORK = IWTMP + ( IWSPC-1 )*( LWORK-IWTMP ) / 3
LSWORK = MIN( LSWORK, LWORK )
LSWORK = MAX( LSWORK, 1 )
IF( IWSPC.EQ.4 )
$ LSWORK = LWORK
*
CALL ZLACPY( 'F', M, N, ASAV, LDA, A, LDA )
SRNAMT = 'ZGESVDQ'
*
LRWORK = MAX(2, M, 5*N)
LIWORK = MAX( N, 1 )
CALL ZGESVDQ( 'H', 'N', 'N', 'A', 'A',
$ M, N, A, LDA, SSAV, USAV, LDU,
$ VTSAV, LDVT, NUMRANK, IWORK, LIWORK,
$ WORK, LWORK, RWORK, LRWORK, IINFO )
*
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9995 )'ZGESVDQ', IINFO, M, N,
$ JTYPE, LSWORK, IOLDSD
INFO = ABS( IINFO )
RETURN
END IF
*
* Do tests 36--39
*
CALL ZBDT01( M, N, 0, ASAV, LDA, USAV, LDU, SSAV, E,
$ VTSAV, LDVT, WORK, RWORK, RESULT( 36 ) )
IF( M.NE.0 .AND. N.NE.0 ) THEN
CALL ZUNT01( 'Columns', M, M, USAV, LDU, WORK,
$ LWORK, RWORK, RESULT( 37 ) )
CALL ZUNT01( 'Rows', N, N, VTSAV, LDVT, WORK,
$ LWORK, RWORK, RESULT( 38 ) )
END IF
RESULT( 39 ) = ZERO
DO 199 I = 1, MNMIN - 1
IF( SSAV( I ).LT.SSAV( I+1 ) )
$ RESULT( 39 ) = ULPINV
IF( SSAV( I ).LT.ZERO )
$ RESULT( 39 ) = ULPINV
199 CONTINUE
IF( MNMIN.GE.1 ) THEN
IF( SSAV( MNMIN ).LT.ZERO )
$ RESULT( 39 ) = ULPINV
END IF
END IF
*
* Test ZGESVJ
* Note: ZGESVJ only works for M >= N
*
RESULT( 15 ) = ZERO
RESULT( 16 ) = ZERO
RESULT( 17 ) = ZERO
RESULT( 18 ) = ZERO
*
IF( M.GE.N ) THEN
IWTMP = 2*MNMIN*MNMIN + 2*MNMIN + MAX( M, N )
LSWORK = IWTMP + ( IWSPC-1 )*( LWORK-IWTMP ) / 3
LSWORK = MIN( LSWORK, LWORK )
LSWORK = MAX( LSWORK, 1 )
LRWORK = MAX(6,N)
IF( IWSPC.EQ.4 )
$ LSWORK = LWORK
*
CALL ZLACPY( 'F', M, N, ASAV, LDA, USAV, LDA )
SRNAMT = 'ZGESVJ'
CALL ZGESVJ( 'G', 'U', 'V', M, N, USAV, LDA, SSAV,
& 0, A, LDVT, WORK, LWORK, RWORK,
& LRWORK, IINFO )
*
* ZGESVJ returns V not VH
*
DO J=1,N
DO I=1,N
VTSAV(J,I) = CONJG (A(I,J))
END DO
END DO
*
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9995 )'GESVJ', IINFO, M, N,
$ JTYPE, LSWORK, IOLDSD
INFO = ABS( IINFO )
RETURN
END IF
*
* Do tests 15--18
*
CALL ZBDT01( M, N, 0, ASAV, LDA, USAV, LDU, SSAV, E,
$ VTSAV, LDVT, WORK, RWORK, RESULT( 15 ) )
IF( M.NE.0 .AND. N.NE.0 ) THEN
CALL ZUNT01( 'Columns', M, M, USAV, LDU, WORK,
$ LWORK, RWORK, RESULT( 16 ) )
CALL ZUNT01( 'Rows', N, N, VTSAV, LDVT, WORK,
$ LWORK, RWORK, RESULT( 17 ) )
END IF
RESULT( 18 ) = ZERO
DO 131 I = 1, MNMIN - 1
IF( SSAV( I ).LT.SSAV( I+1 ) )
$ RESULT( 18 ) = ULPINV
IF( SSAV( I ).LT.ZERO )
$ RESULT( 18 ) = ULPINV
131 CONTINUE
IF( MNMIN.GE.1 ) THEN
IF( SSAV( MNMIN ).LT.ZERO )
$ RESULT( 18 ) = ULPINV
END IF
END IF
*
* Test ZGEJSV
* Note: ZGEJSV only works for M >= N
*
RESULT( 19 ) = ZERO
RESULT( 20 ) = ZERO
RESULT( 21 ) = ZERO
RESULT( 22 ) = ZERO
IF( M.GE.N ) THEN
IWTMP = 2*MNMIN*MNMIN + 2*MNMIN + MAX( M, N )
LSWORK = IWTMP + ( IWSPC-1 )*( LWORK-IWTMP ) / 3
LSWORK = MIN( LSWORK, LWORK )
LSWORK = MAX( LSWORK, 1 )
IF( IWSPC.EQ.4 )
$ LSWORK = LWORK
LRWORK = MAX( 7, N + 2*M)
*
CALL ZLACPY( 'F', M, N, ASAV, LDA, VTSAV, LDA )
SRNAMT = 'ZGEJSV'
CALL ZGEJSV( 'G', 'U', 'V', 'R', 'N', 'N',
& M, N, VTSAV, LDA, SSAV, USAV, LDU, A, LDVT,
& WORK, LWORK, RWORK,
& LRWORK, IWORK, IINFO )
*
* ZGEJSV returns V not VH
*
DO 133 J=1,N
DO 132 I=1,N
VTSAV(J,I) = CONJG (A(I,J))
132 END DO
133 END DO
*
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9995 )'GEJSV', IINFO, M, N,
$ JTYPE, LSWORK, IOLDSD
INFO = ABS( IINFO )
RETURN
END IF
*
* Do tests 19--22
*
CALL ZBDT01( M, N, 0, ASAV, LDA, USAV, LDU, SSAV, E,
$ VTSAV, LDVT, WORK, RWORK, RESULT( 19 ) )
IF( M.NE.0 .AND. N.NE.0 ) THEN
CALL ZUNT01( 'Columns', M, M, USAV, LDU, WORK,
$ LWORK, RWORK, RESULT( 20 ) )
CALL ZUNT01( 'Rows', N, N, VTSAV, LDVT, WORK,
$ LWORK, RWORK, RESULT( 21 ) )
END IF
RESULT( 22 ) = ZERO
DO 134 I = 1, MNMIN - 1
IF( SSAV( I ).LT.SSAV( I+1 ) )
$ RESULT( 22 ) = ULPINV
IF( SSAV( I ).LT.ZERO )
$ RESULT( 22 ) = ULPINV
134 CONTINUE
IF( MNMIN.GE.1 ) THEN
IF( SSAV( MNMIN ).LT.ZERO )
$ RESULT( 22 ) = ULPINV
END IF
END IF
*
* Test ZGESVDX
*
* Factorize A
*
CALL ZLACPY( 'F', M, N, ASAV, LDA, A, LDA )
SRNAMT = 'ZGESVDX'
CALL ZGESVDX( 'V', 'V', 'A', M, N, A, LDA,
$ VL, VU, IL, IU, NS, SSAV, USAV, LDU,
$ VTSAV, LDVT, WORK, LWORK, RWORK,
$ IWORK, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9995 )'GESVDX', IINFO, M, N,
$ JTYPE, LSWORK, IOLDSD
INFO = ABS( IINFO )
RETURN
END IF
*
* Do tests 1--4
*
RESULT( 23 ) = ZERO
RESULT( 24 ) = ZERO
RESULT( 25 ) = ZERO
CALL ZBDT01( M, N, 0, ASAV, LDA, USAV, LDU, SSAV, E,
$ VTSAV, LDVT, WORK, RWORK, RESULT( 23 ) )
IF( M.NE.0 .AND. N.NE.0 ) THEN
CALL ZUNT01( 'Columns', MNMIN, M, USAV, LDU, WORK,
$ LWORK, RWORK, RESULT( 24 ) )
CALL ZUNT01( 'Rows', MNMIN, N, VTSAV, LDVT, WORK,
$ LWORK, RWORK, RESULT( 25 ) )
END IF
RESULT( 26 ) = ZERO
DO 140 I = 1, MNMIN - 1
IF( SSAV( I ).LT.SSAV( I+1 ) )
$ RESULT( 26 ) = ULPINV
IF( SSAV( I ).LT.ZERO )
$ RESULT( 26 ) = ULPINV
140 CONTINUE
IF( MNMIN.GE.1 ) THEN
IF( SSAV( MNMIN ).LT.ZERO )
$ RESULT( 26 ) = ULPINV
END IF
*
* Do partial SVDs, comparing to SSAV, USAV, and VTSAV
*
RESULT( 27 ) = ZERO
RESULT( 28 ) = ZERO
RESULT( 29 ) = ZERO
DO 170 IJU = 0, 1
DO 160 IJVT = 0, 1
IF( ( IJU.EQ.0 .AND. IJVT.EQ.0 ) .OR.
$ ( IJU.EQ.1 .AND. IJVT.EQ.1 ) ) GO TO 160
JOBU = CJOBV( IJU+1 )
JOBVT = CJOBV( IJVT+1 )
RANGE = CJOBR( 1 )
CALL ZLACPY( 'F', M, N, ASAV, LDA, A, LDA )
SRNAMT = 'ZGESVDX'
CALL ZGESVDX( JOBU, JOBVT, 'A', M, N, A, LDA,
$ VL, VU, IL, IU, NS, SSAV, U, LDU,
$ VT, LDVT, WORK, LWORK, RWORK,
$ IWORK, IINFO )
*
* Compare U
*
DIF = ZERO
IF( M.GT.0 .AND. N.GT.0 ) THEN
IF( IJU.EQ.1 ) THEN
CALL ZUNT03( 'C', M, MNMIN, M, MNMIN, USAV,
$ LDU, U, LDU, WORK, LWORK, RWORK,
$ DIF, IINFO )
END IF
END IF
RESULT( 27 ) = MAX( RESULT( 27 ), DIF )
*
* Compare VT
*
DIF = ZERO
IF( M.GT.0 .AND. N.GT.0 ) THEN
IF( IJVT.EQ.1 ) THEN
CALL ZUNT03( 'R', N, MNMIN, N, MNMIN, VTSAV,
$ LDVT, VT, LDVT, WORK, LWORK,
$ RWORK, DIF, IINFO )
END IF
END IF
RESULT( 28 ) = MAX( RESULT( 28 ), DIF )
*
* Compare S
*
DIF = ZERO
DIV = MAX( DBLE( MNMIN )*ULP*S( 1 ),
$ DLAMCH( 'Safe minimum' ) )
DO 150 I = 1, MNMIN - 1
IF( SSAV( I ).LT.SSAV( I+1 ) )
$ DIF = ULPINV
IF( SSAV( I ).LT.ZERO )
$ DIF = ULPINV
DIF = MAX( DIF, ABS( SSAV( I )-S( I ) ) / DIV )
150 CONTINUE
RESULT( 29) = MAX( RESULT( 29 ), DIF )
160 CONTINUE
170 CONTINUE
*
* Do tests 8--10
*
DO 180 I = 1, 4
ISEED2( I ) = ISEED( I )
180 CONTINUE
IF( MNMIN.LE.1 ) THEN
IL = 1
IU = MAX( 1, MNMIN )
ELSE
IL = 1 + INT( ( MNMIN-1 )*DLARND( 1, ISEED2 ) )
IU = 1 + INT( ( MNMIN-1 )*DLARND( 1, ISEED2 ) )
IF( IU.LT.IL ) THEN
ITEMP = IU
IU = IL
IL = ITEMP
END IF
END IF
CALL ZLACPY( 'F', M, N, ASAV, LDA, A, LDA )
SRNAMT = 'ZGESVDX'
CALL ZGESVDX( 'V', 'V', 'I', M, N, A, LDA,
$ VL, VU, IL, IU, NSI, S, U, LDU,
$ VT, LDVT, WORK, LWORK, RWORK,
$ IWORK, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9995 )'GESVDX', IINFO, M, N,
$ JTYPE, LSWORK, IOLDSD
INFO = ABS( IINFO )
RETURN
END IF
*
RESULT( 30 ) = ZERO
RESULT( 31 ) = ZERO
RESULT( 32 ) = ZERO
CALL ZBDT05( M, N, ASAV, LDA, S, NSI, U, LDU,
$ VT, LDVT, WORK, RESULT( 30 ) )
IF( M.NE.0 .AND. N.NE.0 ) THEN
CALL ZUNT01( 'Columns', M, NSI, U, LDU, WORK,
$ LWORK, RWORK, RESULT( 31 ) )
CALL ZUNT01( 'Rows', NSI, N, VT, LDVT, WORK,
$ LWORK, RWORK, RESULT( 32 ) )
END IF
*
* Do tests 11--13
*
IF( MNMIN.GT.0 .AND. NSI.GT.1 ) THEN
IF( IL.NE.1 ) THEN
VU = SSAV( IL ) +
$ MAX( HALF*ABS( SSAV( IL )-SSAV( IL-1 ) ),
$ ULP*ANORM, TWO*RTUNFL )
ELSE
VU = SSAV( 1 ) +
$ MAX( HALF*ABS( SSAV( NS )-SSAV( 1 ) ),
$ ULP*ANORM, TWO*RTUNFL )
END IF
IF( IU.NE.NS ) THEN
VL = SSAV( IU ) - MAX( ULP*ANORM, TWO*RTUNFL,
$ HALF*ABS( SSAV( IU+1 )-SSAV( IU ) ) )
ELSE
VL = SSAV( NS ) - MAX( ULP*ANORM, TWO*RTUNFL,
$ HALF*ABS( SSAV( NS )-SSAV( 1 ) ) )
END IF
VL = MAX( VL,ZERO )
VU = MAX( VU,ZERO )
IF( VL.GE.VU ) VU = MAX( VU*2, VU+VL+HALF )
ELSE
VL = ZERO
VU = ONE
END IF
CALL ZLACPY( 'F', M, N, ASAV, LDA, A, LDA )
SRNAMT = 'ZGESVDX'
CALL ZGESVDX( 'V', 'V', 'V', M, N, A, LDA,
$ VL, VU, IL, IU, NSV, S, U, LDU,
$ VT, LDVT, WORK, LWORK, RWORK,
$ IWORK, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9995 )'GESVDX', IINFO, M, N,
$ JTYPE, LSWORK, IOLDSD
INFO = ABS( IINFO )
RETURN
END IF
*
RESULT( 33 ) = ZERO
RESULT( 34 ) = ZERO
RESULT( 35 ) = ZERO
CALL ZBDT05( M, N, ASAV, LDA, S, NSV, U, LDU,
$ VT, LDVT, WORK, RESULT( 33 ) )
IF( M.NE.0 .AND. N.NE.0 ) THEN
CALL ZUNT01( 'Columns', M, NSV, U, LDU, WORK,
$ LWORK, RWORK, RESULT( 34 ) )
CALL ZUNT01( 'Rows', NSV, N, VT, LDVT, WORK,
$ LWORK, RWORK, RESULT( 35 ) )
END IF
*
* End of Loop -- Check for RESULT(j) > THRESH
*
NTEST = 0
NFAIL = 0
DO 190 J = 1, 39
IF( RESULT( J ).GE.ZERO )
$ NTEST = NTEST + 1
IF( RESULT( J ).GE.THRESH )
$ NFAIL = NFAIL + 1
190 CONTINUE
*
IF( NFAIL.GT.0 )
$ NTESTF = NTESTF + 1
IF( NTESTF.EQ.1 ) THEN
WRITE( NOUNIT, FMT = 9999 )
WRITE( NOUNIT, FMT = 9998 )THRESH
NTESTF = 2
END IF
*
DO 200 J = 1, 39
IF( RESULT( J ).GE.THRESH ) THEN
WRITE( NOUNIT, FMT = 9997 )M, N, JTYPE, IWSPC,
$ IOLDSD, J, RESULT( J )
END IF
200 CONTINUE
*
NERRS = NERRS + NFAIL
NTESTT = NTESTT + NTEST
*
210 CONTINUE
*
220 CONTINUE
230 CONTINUE
*
* Summary
*
CALL ALASVM( 'ZBD', NOUNIT, NERRS, NTESTT, 0 )
*
9999 FORMAT( ' SVD -- Complex Singular Value Decomposition Driver ',
$ / ' Matrix types (see ZDRVBD for details):',
$ / / ' 1 = Zero matrix', / ' 2 = Identity matrix',
$ / ' 3 = Evenly spaced singular values near 1',
$ / ' 4 = Evenly spaced singular values near underflow',
$ / ' 5 = Evenly spaced singular values near overflow',
$ / / ' Tests performed: ( A is dense, U and V are unitary,',
$ / 19X, ' S is an array, and Upartial, VTpartial, and',
$ / 19X, ' Spartial are partially computed U, VT and S),', / )
9998 FORMAT( ' Tests performed with Test Threshold = ', F8.2,
$ / ' ZGESVD: ', /
$ ' 1 = | A - U diag(S) VT | / ( |A| max(M,N) ulp ) ',
$ / ' 2 = | I - U**T U | / ( M ulp ) ',
$ / ' 3 = | I - VT VT**T | / ( N ulp ) ',
$ / ' 4 = 0 if S contains min(M,N) nonnegative values in',
$ ' decreasing order, else 1/ulp',
$ / ' 5 = | U - Upartial | / ( M ulp )',
$ / ' 6 = | VT - VTpartial | / ( N ulp )',
$ / ' 7 = | S - Spartial | / ( min(M,N) ulp |S| )',
$ / ' ZGESDD: ', /
$ ' 8 = | A - U diag(S) VT | / ( |A| max(M,N) ulp ) ',
$ / ' 9 = | I - U**T U | / ( M ulp ) ',
$ / '10 = | I - VT VT**T | / ( N ulp ) ',
$ / '11 = 0 if S contains min(M,N) nonnegative values in',
$ ' decreasing order, else 1/ulp',
$ / '12 = | U - Upartial | / ( M ulp )',
$ / '13 = | VT - VTpartial | / ( N ulp )',
$ / '14 = | S - Spartial | / ( min(M,N) ulp |S| )',
$ / ' ZGESVJ: ', /
$ / '15 = | A - U diag(S) VT | / ( |A| max(M,N) ulp ) ',
$ / '16 = | I - U**T U | / ( M ulp ) ',
$ / '17 = | I - VT VT**T | / ( N ulp ) ',
$ / '18 = 0 if S contains min(M,N) nonnegative values in',
$ ' decreasing order, else 1/ulp',
$ / ' ZGESJV: ', /
$ / '19 = | A - U diag(S) VT | / ( |A| max(M,N) ulp )',
$ / '20 = | I - U**T U | / ( M ulp ) ',
$ / '21 = | I - VT VT**T | / ( N ulp ) ',
$ / '22 = 0 if S contains min(M,N) nonnegative values in',
$ ' decreasing order, else 1/ulp',
$ / ' ZGESVDX(V,V,A): ', /
$ '23 = | A - U diag(S) VT | / ( |A| max(M,N) ulp ) ',
$ / '24 = | I - U**T U | / ( M ulp ) ',
$ / '25 = | I - VT VT**T | / ( N ulp ) ',
$ / '26 = 0 if S contains min(M,N) nonnegative values in',
$ ' decreasing order, else 1/ulp',
$ / '27 = | U - Upartial | / ( M ulp )',
$ / '28 = | VT - VTpartial | / ( N ulp )',
$ / '29 = | S - Spartial | / ( min(M,N) ulp |S| )',
$ / ' ZGESVDX(V,V,I): ',
$ / '30 = | U**T A VT**T - diag(S) | / ( |A| max(M,N) ulp )',
$ / '31 = | I - U**T U | / ( M ulp ) ',
$ / '32 = | I - VT VT**T | / ( N ulp ) ',
$ / ' ZGESVDX(V,V,V) ',
$ / '33 = | U**T A VT**T - diag(S) | / ( |A| max(M,N) ulp )',
$ / '34 = | I - U**T U | / ( M ulp ) ',
$ / '35 = | I - VT VT**T | / ( N ulp ) ',
$ ' ZGESVDQ(H,N,N,A,A',
$ / '36 = | A - U diag(S) VT | / ( |A| max(M,N) ulp ) ',
$ / '37 = | I - U**T U | / ( M ulp ) ',
$ / '38 = | I - VT VT**T | / ( N ulp ) ',
$ / '39 = 0 if S contains min(M,N) nonnegative values in',
$ ' decreasing order, else 1/ulp',
$ / / )
9997 FORMAT( ' M=', I5, ', N=', I5, ', type ', I1, ', IWS=', I1,
$ ', seed=', 4( I4, ',' ), ' test(', I2, ')=', G11.4 )
9996 FORMAT( ' ZDRVBD: ', A, ' returned INFO=', I6, '.', / 9X, 'M=',
$ I6, ', N=', I6, ', JTYPE=', I6, ', ISEED=(', 3( I5, ',' ),
$ I5, ')' )
9995 FORMAT( ' ZDRVBD: ', A, ' returned INFO=', I6, '.', / 9X, 'M=',
$ I6, ', N=', I6, ', JTYPE=', I6, ', LSWORK=', I6, / 9X,
$ 'ISEED=(', 3( I5, ',' ), I5, ')' )
*
RETURN
*
* End of ZDRVBD
*
END
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