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Add numerical tests for TRECV3 (Reference-LAPACK 682)

tags/v0.3.22^2
Martin Kroeker GitHub 2 years ago
parent
2a83ec1f79
commit
147e2fbf87
No known key found for this signature in database GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 297 additions and 24 deletions
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  1. +75
    -6
      lapack-netlib/TESTING/EIG/cchkhs.f
  2. +75
    -7
      lapack-netlib/TESTING/EIG/dchkhs.f
  3. +73
    -6
      lapack-netlib/TESTING/EIG/schkhs.f
  4. +74
    -5
      lapack-netlib/TESTING/EIG/zchkhs.f

+ 75
- 6
lapack-netlib/TESTING/EIG/cchkhs.f View File

@@ -21,7 +21,7 @@
* .. Array Arguments ..
* LOGICAL DOTYPE( * ), SELECT( * )
* INTEGER ISEED( 4 ), IWORK( * ), NN( * )
* REAL RESULT( 14 ), RWORK( * )
* REAL RESULT( 16 ), RWORK( * )
* COMPLEX A( LDA, * ), EVECTL( LDU, * ),
* $ EVECTR( LDU, * ), EVECTX( LDU, * ),
* $ EVECTY( LDU, * ), H( LDA, * ), T1( LDA, * ),
@@ -64,10 +64,15 @@
*> eigenvectors of H. Y is lower triangular, and X is
*> upper triangular.
*>
*> CTREVC3 computes left and right eigenvector matrices
*> from a Schur matrix T and backtransforms them with Z
*> to eigenvector matrices L and R for A. L and R are
*> GE matrices.
*>
*> When CCHKHS is called, a number of matrix "sizes" ("n's") and a
*> number of matrix "types" are specified. For each size ("n")
*> and each type of matrix, one matrix will be generated and used
*> to test the nonsymmetric eigenroutines. For each matrix, 14
*> to test the nonsymmetric eigenroutines. For each matrix, 16
*> tests will be performed:
*>
*> (1) | A - U H U**H | / ( |A| n ulp )
@@ -98,6 +103,10 @@
*>
*> (14) | Y**H A - W**H Y | / ( |A| |Y| ulp )
*>
*> (15) | AR - RW | / ( |A| |R| ulp )
*>
*> (16) | LA - WL | / ( |A| |L| ulp )
*>
*> The "sizes" are specified by an array NN(1:NSIZES); the value of
*> each element NN(j) specifies one size.
*> The "types" are specified by a logical array DOTYPE( 1:NTYPES );
@@ -331,7 +340,7 @@
*> Workspace. Could be equivalenced to IWORK, but not RWORK.
*> Modified.
*>
*> RESULT - REAL array, dimension (14)
*> RESULT - REAL array, dimension (16)
*> The values computed by the fourteen tests described above.
*> The values are currently limited to 1/ulp, to avoid
*> overflow.
@@ -421,7 +430,7 @@
* .. Array Arguments ..
LOGICAL DOTYPE( * ), SELECT( * )
INTEGER ISEED( 4 ), IWORK( * ), NN( * )
REAL RESULT( 14 ), RWORK( * )
REAL RESULT( 16 ), RWORK( * )
COMPLEX A( LDA, * ), EVECTL( LDU, * ),
$ EVECTR( LDU, * ), EVECTX( LDU, * ),
$ EVECTY( LDU, * ), H( LDA, * ), T1( LDA, * ),
@@ -463,8 +472,8 @@
* .. External Subroutines ..
EXTERNAL CCOPY, CGEHRD, CGEMM, CGET10, CGET22, CHSEIN,
$ CHSEQR, CHST01, CLACPY, CLASET, CLATME, CLATMR,
$ CLATMS, CTREVC, CUNGHR, CUNMHR, SLABAD, SLAFTS,
$ SLASUM, XERBLA
$ CLATMS, CTREVC, CTREVC3, CUNGHR, CUNMHR,
$ SLABAD, SLAFTS, SLASUM, XERBLA
* ..
* .. Intrinsic Functions ..
INTRINSIC ABS, MAX, MIN, REAL, SQRT
@@ -1067,6 +1076,66 @@
$ RESULT( 14 ) = DUMMA( 3 )*ANINV
END IF
*
* Compute Left and Right Eigenvectors of A
*
* Compute a Right eigenvector matrix:
*
NTEST = 15
RESULT( 15 ) = ULPINV
*
CALL CLACPY( ' ', N, N, UZ, LDU, EVECTR, LDU )
*
CALL CTREVC3( 'Right', 'Back', SELECT, N, T1, LDA, CDUMMA,
$ LDU, EVECTR, LDU, N, IN, WORK, NWORK, RWORK,
$ N, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9999 )'CTREVC3(R,B)', IINFO, N,
$ JTYPE, IOLDSD
INFO = ABS( IINFO )
GO TO 250
END IF
*
* Test 15: | AR - RW | / ( |A| |R| ulp )
*
* (from Schur decomposition)
*
CALL CGET22( 'N', 'N', 'N', N, A, LDA, EVECTR, LDU, W1,
$ WORK, RWORK, DUMMA( 1 ) )
RESULT( 15 ) = DUMMA( 1 )
IF( DUMMA( 2 ).GT.THRESH ) THEN
WRITE( NOUNIT, FMT = 9998 )'Right', 'CTREVC3',
$ DUMMA( 2 ), N, JTYPE, IOLDSD
END IF
*
* Compute a Left eigenvector matrix:
*
NTEST = 16
RESULT( 16 ) = ULPINV
*
CALL CLACPY( ' ', N, N, UZ, LDU, EVECTL, LDU )
*
CALL CTREVC3( 'Left', 'Back', SELECT, N, T1, LDA, EVECTL,
$ LDU, CDUMMA, LDU, N, IN, WORK, NWORK, RWORK,
$ N, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9999 )'CTREVC3(L,B)', IINFO, N,
$ JTYPE, IOLDSD
INFO = ABS( IINFO )
GO TO 250
END IF
*
* Test 16: | LA - WL | / ( |A| |L| ulp )
*
* (from Schur decomposition)
*
CALL CGET22( 'Conj', 'N', 'Conj', N, A, LDA, EVECTL, LDU,
$ W1, WORK, RWORK, DUMMA( 3 ) )
RESULT( 16 ) = DUMMA( 3 )
IF( DUMMA( 4 ).GT.THRESH ) THEN
WRITE( NOUNIT, FMT = 9998 )'Left', 'CTREVC3', DUMMA( 4 ),
$ N, JTYPE, IOLDSD
END IF
*
* End of Loop -- Check for RESULT(j) > THRESH
*
240 CONTINUE


+ 75
- 7
lapack-netlib/TESTING/EIG/dchkhs.f View File

@@ -23,7 +23,7 @@
* INTEGER ISEED( 4 ), IWORK( * ), NN( * )
* DOUBLE PRECISION A( LDA, * ), EVECTL( LDU, * ),
* $ EVECTR( LDU, * ), EVECTX( LDU, * ),
* $ EVECTY( LDU, * ), H( LDA, * ), RESULT( 14 ),
* $ EVECTY( LDU, * ), H( LDA, * ), RESULT( 16 ),
* $ T1( LDA, * ), T2( LDA, * ), TAU( * ),
* $ U( LDU, * ), UU( LDU, * ), UZ( LDU, * ),
* $ WI1( * ), WI2( * ), WI3( * ), WORK( * ),
@@ -49,15 +49,21 @@
*> T is "quasi-triangular", and the eigenvalue vector W.
*>
*> DTREVC computes the left and right eigenvector matrices
*> L and R for T.
*> L and R for T. L is lower quasi-triangular, and R is
*> upper quasi-triangular.
*>
*> DHSEIN computes the left and right eigenvector matrices
*> Y and X for H, using inverse iteration.
*>
*> DTREVC3 computes left and right eigenvector matrices
*> from a Schur matrix T and backtransforms them with Z
*> to eigenvector matrices L and R for A. L and R are
*> GE matrices.
*>
*> When DCHKHS is called, a number of matrix "sizes" ("n's") and a
*> number of matrix "types" are specified. For each size ("n")
*> and each type of matrix, one matrix will be generated and used
*> to test the nonsymmetric eigenroutines. For each matrix, 14
*> to test the nonsymmetric eigenroutines. For each matrix, 16
*> tests will be performed:
*>
*> (1) | A - U H U**T | / ( |A| n ulp )
@@ -88,6 +94,10 @@
*>
*> (14) | Y**H A - W**H Y | / ( |A| |Y| ulp )
*>
*> (15) | AR - RW | / ( |A| |R| ulp )
*>
*> (16) | LA - WL | / ( |A| |L| ulp )
*>
*> The "sizes" are specified by an array NN(1:NSIZES); the value of
*> each element NN(j) specifies one size.
*> The "types" are specified by a logical array DOTYPE( 1:NTYPES );
@@ -331,7 +341,7 @@
*> Workspace.
*> Modified.
*>
*> RESULT - DOUBLE PRECISION array, dimension (14)
*> RESULT - DOUBLE PRECISION array, dimension (16)
*> The values computed by the fourteen tests described above.
*> The values are currently limited to 1/ulp, to avoid
*> overflow.
@@ -423,7 +433,7 @@
INTEGER ISEED( 4 ), IWORK( * ), NN( * )
DOUBLE PRECISION A( LDA, * ), EVECTL( LDU, * ),
$ EVECTR( LDU, * ), EVECTX( LDU, * ),
$ EVECTY( LDU, * ), H( LDA, * ), RESULT( 14 ),
$ EVECTY( LDU, * ), H( LDA, * ), RESULT( 16 ),
$ T1( LDA, * ), T2( LDA, * ), TAU( * ),
$ U( LDU, * ), UU( LDU, * ), UZ( LDU, * ),
$ WI1( * ), WI2( * ), WI3( * ), WORK( * ),
@@ -461,7 +471,7 @@
EXTERNAL DCOPY, DGEHRD, DGEMM, DGET10, DGET22, DHSEIN,
$ DHSEQR, DHST01, DLABAD, DLACPY, DLAFTS, DLASET,
$ DLASUM, DLATME, DLATMR, DLATMS, DORGHR, DORMHR,
$ DTREVC, XERBLA
$ DTREVC, DTREVC3, XERBLA
* ..
* .. Intrinsic Functions ..
INTRINSIC ABS, DBLE, MAX, MIN, SQRT
@@ -561,7 +571,7 @@
*
* Initialize RESULT
*
DO 30 J = 1, 14
DO 30 J = 1, 16
RESULT( J ) = ZERO
30 CONTINUE
*
@@ -1108,6 +1118,64 @@
$ RESULT( 14 ) = DUMMA( 3 )*ANINV
END IF
*
* Compute Left and Right Eigenvectors of A
*
* Compute a Right eigenvector matrix:
*
NTEST = 15
RESULT( 15 ) = ULPINV
*
CALL DLACPY( ' ', N, N, UZ, LDU, EVECTR, LDU )
*
CALL DTREVC3( 'Right', 'Back', SELECT, N, T1, LDA, DUMMA,
$ LDU, EVECTR, LDU, N, IN, WORK, NWORK, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9999 )'DTREVC3(R,B)', IINFO, N,
$ JTYPE, IOLDSD
INFO = ABS( IINFO )
GO TO 250
END IF
*
* Test 15: | AR - RW | / ( |A| |R| ulp )
*
* (from Schur decomposition)
*
CALL DGET22( 'N', 'N', 'N', N, A, LDA, EVECTR, LDU, WR1,
$ WI1, WORK, DUMMA( 1 ) )
RESULT( 15 ) = DUMMA( 1 )
IF( DUMMA( 2 ).GT.THRESH ) THEN
WRITE( NOUNIT, FMT = 9998 )'Right', 'DTREVC3',
$ DUMMA( 2 ), N, JTYPE, IOLDSD
END IF
*
* Compute a Left eigenvector matrix:
*
NTEST = 16
RESULT( 16 ) = ULPINV
*
CALL DLACPY( ' ', N, N, UZ, LDU, EVECTL, LDU )
*
CALL DTREVC3( 'Left', 'Back', SELECT, N, T1, LDA, EVECTL,
$ LDU, DUMMA, LDU, N, IN, WORK, NWORK, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9999 )'DTREVC3(L,B)', IINFO, N,
$ JTYPE, IOLDSD
INFO = ABS( IINFO )
GO TO 250
END IF
*
* Test 16: | LA - WL | / ( |A| |L| ulp )
*
* (from Schur decomposition)
*
CALL DGET22( 'Trans', 'N', 'Conj', N, A, LDA, EVECTL, LDU,
$ WR1, WI1, WORK, DUMMA( 3 ) )
RESULT( 16 ) = DUMMA( 3 )
IF( DUMMA( 4 ).GT.THRESH ) THEN
WRITE( NOUNIT, FMT = 9998 )'Left', 'DTREVC3', DUMMA( 4 ),
$ N, JTYPE, IOLDSD
END IF
*
* End of Loop -- Check for RESULT(j) > THRESH
*
250 CONTINUE


+ 73
- 6
lapack-netlib/TESTING/EIG/schkhs.f View File

@@ -23,7 +23,7 @@
* INTEGER ISEED( 4 ), IWORK( * ), NN( * )
* REAL A( LDA, * ), EVECTL( LDU, * ),
* $ EVECTR( LDU, * ), EVECTX( LDU, * ),
* $ EVECTY( LDU, * ), H( LDA, * ), RESULT( 14 ),
* $ EVECTY( LDU, * ), H( LDA, * ), RESULT( 16 ),
* $ T1( LDA, * ), T2( LDA, * ), TAU( * ),
* $ U( LDU, * ), UU( LDU, * ), UZ( LDU, * ),
* $ WI1( * ), WI2( * ), WI3( * ), WORK( * ),
@@ -54,10 +54,15 @@
*> SHSEIN computes the left and right eigenvector matrices
*> Y and X for H, using inverse iteration.
*>
*> STREVC3 computes left and right eigenvector matrices
*> from a Schur matrix T and backtransforms them with Z
*> to eigenvector matrices L and R for A. L and R are
*> GE matrices.
*>
*> When SCHKHS is called, a number of matrix "sizes" ("n's") and a
*> number of matrix "types" are specified. For each size ("n")
*> and each type of matrix, one matrix will be generated and used
*> to test the nonsymmetric eigenroutines. For each matrix, 14
*> to test the nonsymmetric eigenroutines. For each matrix, 16
*> tests will be performed:
*>
*> (1) | A - U H U**T | / ( |A| n ulp )
@@ -88,6 +93,10 @@
*>
*> (14) | Y**H A - W**H Y | / ( |A| |Y| ulp )
*>
*> (15) | AR - RW | / ( |A| |R| ulp )
*>
*> (16) | LA - WL | / ( |A| |L| ulp )
*>
*> The "sizes" are specified by an array NN(1:NSIZES); the value of
*> each element NN(j) specifies one size.
*> The "types" are specified by a logical array DOTYPE( 1:NTYPES );
@@ -331,7 +340,7 @@
*> Workspace.
*> Modified.
*>
*> RESULT - REAL array, dimension (14)
*> RESULT - REAL array, dimension (16)
*> The values computed by the fourteen tests described above.
*> The values are currently limited to 1/ulp, to avoid
*> overflow.
@@ -423,7 +432,7 @@
INTEGER ISEED( 4 ), IWORK( * ), NN( * )
REAL A( LDA, * ), EVECTL( LDU, * ),
$ EVECTR( LDU, * ), EVECTX( LDU, * ),
$ EVECTY( LDU, * ), H( LDA, * ), RESULT( 14 ),
$ EVECTY( LDU, * ), H( LDA, * ), RESULT( 16 ),
$ T1( LDA, * ), T2( LDA, * ), TAU( * ),
$ U( LDU, * ), UU( LDU, * ), UZ( LDU, * ),
$ WI1( * ), WI2( * ), WI3( * ), WORK( * ),
@@ -461,7 +470,7 @@
EXTERNAL SCOPY, SGEHRD, SGEMM, SGET10, SGET22, SHSEIN,
$ SHSEQR, SHST01, SLABAD, SLACPY, SLAFTS, SLASET,
$ SLASUM, SLATME, SLATMR, SLATMS, SORGHR, SORMHR,
$ STREVC, XERBLA
$ STREVC, STREVC3, XERBLA
* ..
* .. Intrinsic Functions ..
INTRINSIC ABS, MAX, MIN, REAL, SQRT
@@ -561,7 +570,7 @@
*
* Initialize RESULT
*
DO 30 J = 1, 14
DO 30 J = 1, 16
RESULT( J ) = ZERO
30 CONTINUE
*
@@ -1108,6 +1117,64 @@
$ RESULT( 14 ) = DUMMA( 3 )*ANINV
END IF
*
* Compute Left and Right Eigenvectors of A
*
* Compute a Right eigenvector matrix:
*
NTEST = 15
RESULT( 15 ) = ULPINV
*
CALL SLACPY( ' ', N, N, UZ, LDU, EVECTR, LDU )
*
CALL STREVC3( 'Right', 'Back', SELECT, N, T1, LDA, DUMMA,
$ LDU, EVECTR, LDU, N, IN, WORK, NWORK, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9999 )'STREVC3(R,B)', IINFO, N,
$ JTYPE, IOLDSD
INFO = ABS( IINFO )
GO TO 250
END IF
*
* Test 15: | AR - RW | / ( |A| |R| ulp )
*
* (from Schur decomposition)
*
CALL SGET22( 'N', 'N', 'N', N, A, LDA, EVECTR, LDU, WR1,
$ WI1, WORK, DUMMA( 1 ) )
RESULT( 15 ) = DUMMA( 1 )
IF( DUMMA( 2 ).GT.THRESH ) THEN
WRITE( NOUNIT, FMT = 9998 )'Right', 'STREVC3',
$ DUMMA( 2 ), N, JTYPE, IOLDSD
END IF
*
* Compute a Left eigenvector matrix:
*
NTEST = 16
RESULT( 16 ) = ULPINV
*
CALL SLACPY( ' ', N, N, UZ, LDU, EVECTL, LDU )
*
CALL STREVC3( 'Left', 'Back', SELECT, N, T1, LDA, EVECTL,
$ LDU, DUMMA, LDU, N, IN, WORK, NWORK, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9999 )'STREVC3(L,B)', IINFO, N,
$ JTYPE, IOLDSD
INFO = ABS( IINFO )
GO TO 250
END IF
*
* Test 16: | LA - WL | / ( |A| |L| ulp )
*
* (from Schur decomposition)
*
CALL SGET22( 'Trans', 'N', 'Conj', N, A, LDA, EVECTL, LDU,
$ WR1, WI1, WORK, DUMMA( 3 ) )
RESULT( 16 ) = DUMMA( 3 )
IF( DUMMA( 4 ).GT.THRESH ) THEN
WRITE( NOUNIT, FMT = 9998 )'Left', 'STREVC3', DUMMA( 4 ),
$ N, JTYPE, IOLDSD
END IF
*
* End of Loop -- Check for RESULT(j) > THRESH
*
250 CONTINUE


+ 74
- 5
lapack-netlib/TESTING/EIG/zchkhs.f View File

@@ -21,7 +21,7 @@
* .. Array Arguments ..
* LOGICAL DOTYPE( * ), SELECT( * )
* INTEGER ISEED( 4 ), IWORK( * ), NN( * )
* DOUBLE PRECISION RESULT( 14 ), RWORK( * )
* DOUBLE PRECISION RESULT( 16 ), RWORK( * )
* COMPLEX*16 A( LDA, * ), EVECTL( LDU, * ),
* $ EVECTR( LDU, * ), EVECTX( LDU, * ),
* $ EVECTY( LDU, * ), H( LDA, * ), T1( LDA, * ),
@@ -64,10 +64,15 @@
*> eigenvectors of H. Y is lower triangular, and X is
*> upper triangular.
*>
*> ZTREVC3 computes left and right eigenvector matrices
*> from a Schur matrix T and backtransforms them with Z
*> to eigenvector matrices L and R for A. L and R are
*> GE matrices.
*>
*> When ZCHKHS is called, a number of matrix "sizes" ("n's") and a
*> number of matrix "types" are specified. For each size ("n")
*> and each type of matrix, one matrix will be generated and used
*> to test the nonsymmetric eigenroutines. For each matrix, 14
*> to test the nonsymmetric eigenroutines. For each matrix, 16
*> tests will be performed:
*>
*> (1) | A - U H U**H | / ( |A| n ulp )
@@ -98,6 +103,10 @@
*>
*> (14) | Y**H A - W**H Y | / ( |A| |Y| ulp )
*>
*> (15) | AR - RW | / ( |A| |R| ulp )
*>
*> (16) | LA - WL | / ( |A| |L| ulp )
*>
*> The "sizes" are specified by an array NN(1:NSIZES); the value of
*> each element NN(j) specifies one size.
*> The "types" are specified by a logical array DOTYPE( 1:NTYPES );
@@ -331,7 +340,7 @@
*> Workspace. Could be equivalenced to IWORK, but not RWORK.
*> Modified.
*>
*> RESULT - DOUBLE PRECISION array, dimension (14)
*> RESULT - DOUBLE PRECISION array, dimension (16)
*> The values computed by the fourteen tests described above.
*> The values are currently limited to 1/ulp, to avoid
*> overflow.
@@ -421,7 +430,7 @@
* .. Array Arguments ..
LOGICAL DOTYPE( * ), SELECT( * )
INTEGER ISEED( 4 ), IWORK( * ), NN( * )
DOUBLE PRECISION RESULT( 14 ), RWORK( * )
DOUBLE PRECISION RESULT( 16 ), RWORK( * )
COMPLEX*16 A( LDA, * ), EVECTL( LDU, * ),
$ EVECTR( LDU, * ), EVECTX( LDU, * ),
$ EVECTY( LDU, * ), H( LDA, * ), T1( LDA, * ),
@@ -464,7 +473,7 @@
EXTERNAL DLABAD, DLAFTS, DLASUM, XERBLA, ZCOPY, ZGEHRD,
$ ZGEMM, ZGET10, ZGET22, ZHSEIN, ZHSEQR, ZHST01,
$ ZLACPY, ZLASET, ZLATME, ZLATMR, ZLATMS, ZTREVC,
$ ZUNGHR, ZUNMHR
$ ZTREVC3, ZUNGHR, ZUNMHR
* ..
* .. Intrinsic Functions ..
INTRINSIC ABS, DBLE, MAX, MIN, SQRT
@@ -1067,6 +1076,66 @@
$ RESULT( 14 ) = DUMMA( 3 )*ANINV
END IF
*
* Compute Left and Right Eigenvectors of A
*
* Compute a Right eigenvector matrix:
*
NTEST = 15
RESULT( 15 ) = ULPINV
*
CALL ZLACPY( ' ', N, N, UZ, LDU, EVECTR, LDU )
*
CALL ZTREVC3( 'Right', 'Back', SELECT, N, T1, LDA, CDUMMA,
$ LDU, EVECTR, LDU, N, IN, WORK, NWORK, RWORK,
$ N, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9999 )'ZTREVC3(R,B)', IINFO, N,
$ JTYPE, IOLDSD
INFO = ABS( IINFO )
GO TO 250
END IF
*
* Test 15: | AR - RW | / ( |A| |R| ulp )
*
* (from Schur decomposition)
*
CALL ZGET22( 'N', 'N', 'N', N, A, LDA, EVECTR, LDU, W1,
$ WORK, RWORK, DUMMA( 1 ) )
RESULT( 15 ) = DUMMA( 1 )
IF( DUMMA( 2 ).GT.THRESH ) THEN
WRITE( NOUNIT, FMT = 9998 )'Right', 'ZTREVC3',
$ DUMMA( 2 ), N, JTYPE, IOLDSD
END IF
*
* Compute a Left eigenvector matrix:
*
NTEST = 16
RESULT( 16 ) = ULPINV
*
CALL ZLACPY( ' ', N, N, UZ, LDU, EVECTL, LDU )
*
CALL ZTREVC3( 'Left', 'Back', SELECT, N, T1, LDA, EVECTL,
$ LDU, CDUMMA, LDU, N, IN, WORK, NWORK, RWORK,
$ N, IINFO )
IF( IINFO.NE.0 ) THEN
WRITE( NOUNIT, FMT = 9999 )'ZTREVC3(L,B)', IINFO, N,
$ JTYPE, IOLDSD
INFO = ABS( IINFO )
GO TO 250
END IF
*
* Test 16: | LA - WL | / ( |A| |L| ulp )
*
* (from Schur decomposition)
*
CALL ZGET22( 'Conj', 'N', 'Conj', N, A, LDA, EVECTL, LDU,
$ W1, WORK, RWORK, DUMMA( 3 ) )
RESULT( 16 ) = DUMMA( 3 )
IF( DUMMA( 4 ).GT.THRESH ) THEN
WRITE( NOUNIT, FMT = 9998 )'Left', 'ZTREVC3', DUMMA( 4 ),
$ N, JTYPE, IOLDSD
END IF
*
* End of Loop -- Check for RESULT(j) > THRESH
*
240 CONTINUE


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