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SUBROUTINE DERRSY( PATH, NUNIT )
*
* -- LAPACK test routine (version 3.1) --
* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
* November 2006
*
* .. Scalar Arguments ..
CHARACTER*3 PATH
INTEGER NUNIT
* ..
*
* Purpose
* =======
*
* DERRSY tests the error exits for the DOUBLE PRECISION routines
* for symmetric indefinite matrices.
*
* Arguments
* =========
*
* PATH (input) CHARACTER*3
* The LAPACK path name for the routines to be tested.
*
* NUNIT (input) INTEGER
* The unit number for output.
*
* =====================================================================
*
* .. Parameters ..
INTEGER NMAX
PARAMETER ( NMAX = 4 )
* ..
* .. Local Scalars ..
CHARACTER*2 C2
INTEGER I, INFO, J
DOUBLE PRECISION ANRM, RCOND
* ..
* .. Local Arrays ..
INTEGER IP( NMAX ), IW( NMAX )
DOUBLE PRECISION A( NMAX, NMAX ), AF( NMAX, NMAX ), B( NMAX ),
$ R1( NMAX ), R2( NMAX ), W( 3*NMAX ), X( NMAX )
* ..
* .. External Functions ..
LOGICAL LSAMEN
EXTERNAL LSAMEN
* ..
* .. External Subroutines ..
EXTERNAL ALAESM, CHKXER, DSPCON, DSPRFS, DSPTRF, DSPTRI,
$ DSPTRS, DSYCON, DSYRFS, DSYTF2, DSYTRF, DSYTRI,
$ DSYTRI2, DSYTRS
* ..
* .. Scalars in Common ..
LOGICAL LERR, OK
CHARACTER*32 SRNAMT
INTEGER INFOT, NOUT
* ..
* .. Common blocks ..
COMMON / INFOC / INFOT, NOUT, OK, LERR
COMMON / SRNAMC / SRNAMT
* ..
* .. Intrinsic Functions ..
INTRINSIC DBLE
* ..
* .. Executable Statements ..
*
NOUT = NUNIT
WRITE( NOUT, FMT = * )
C2 = PATH( 2: 3 )
*
* Set the variables to innocuous values.
*
DO 20 J = 1, NMAX
DO 10 I = 1, NMAX
A( I, J ) = 1.D0 / DBLE( I+J )
AF( I, J ) = 1.D0 / DBLE( I+J )
10 CONTINUE
B( J ) = 0.D0
R1( J ) = 0.D0
R2( J ) = 0.D0
W( J ) = 0.D0
X( J ) = 0.D0
IP( J ) = J
IW( J ) = J
20 CONTINUE
ANRM = 1.0D0
RCOND = 1.0D0
OK = .TRUE.
*
IF( LSAMEN( 2, C2, 'SY' ) ) THEN
*
* Test error exits of the routines that use the Bunch-Kaufman
* factorization of a symmetric indefinite matrix.
*
* DSYTRF
*
SRNAMT = 'DSYTRF'
INFOT = 1
CALL DSYTRF( '/', 0, A, 1, IP, W, 1, INFO )
CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSYTRF( 'U', -1, A, 1, IP, W, 1, INFO )
CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DSYTRF( 'U', 2, A, 1, IP, W, 4, INFO )
CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
*
* DSYTF2
*
SRNAMT = 'DSYTF2'
INFOT = 1
CALL DSYTF2( '/', 0, A, 1, IP, INFO )
CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSYTF2( 'U', -1, A, 1, IP, INFO )
CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DSYTF2( 'U', 2, A, 1, IP, INFO )
CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
*
* DSYTRI
*
SRNAMT = 'DSYTRI'
INFOT = 1
CALL DSYTRI( '/', 0, A, 1, IP, W, INFO )
CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSYTRI( 'U', -1, A, 1, IP, W, INFO )
CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DSYTRI( 'U', 2, A, 1, IP, W, INFO )
CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
*
* DSYTRI2
*
SRNAMT = 'DSYTRI2'
INFOT = 1
CALL DSYTRI2( '/', 0, A, 1, IP, W, IW, INFO )
CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSYTRI2( 'U', -1, A, 1, IP, W, IW, INFO )
CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DSYTRI2( 'U', 2, A, 1, IP, W, IW, INFO )
CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
*
* DSYTRS
*
SRNAMT = 'DSYTRS'
INFOT = 1
CALL DSYTRS( '/', 0, 0, A, 1, IP, B, 1, INFO )
CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSYTRS( 'U', -1, 0, A, 1, IP, B, 1, INFO )
CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DSYTRS( 'U', 0, -1, A, 1, IP, B, 1, INFO )
CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DSYTRS( 'U', 2, 1, A, 1, IP, B, 2, INFO )
CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL DSYTRS( 'U', 2, 1, A, 2, IP, B, 1, INFO )
CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
*
* DSYRFS
*
SRNAMT = 'DSYRFS'
INFOT = 1
CALL DSYRFS( '/', 0, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2, W,
$ IW, INFO )
CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSYRFS( 'U', -1, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
$ W, IW, INFO )
CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DSYRFS( 'U', 0, -1, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
$ W, IW, INFO )
CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DSYRFS( 'U', 2, 1, A, 1, AF, 2, IP, B, 2, X, 2, R1, R2, W,
$ IW, INFO )
CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL DSYRFS( 'U', 2, 1, A, 2, AF, 1, IP, B, 2, X, 2, R1, R2, W,
$ IW, INFO )
CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 10
CALL DSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 1, X, 2, R1, R2, W,
$ IW, INFO )
CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 12
CALL DSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 2, X, 1, R1, R2, W,
$ IW, INFO )
CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
*
* DSYCON
*
SRNAMT = 'DSYCON'
INFOT = 1
CALL DSYCON( '/', 0, A, 1, IP, ANRM, RCOND, W, IW, INFO )
CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSYCON( 'U', -1, A, 1, IP, ANRM, RCOND, W, IW, INFO )
CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DSYCON( 'U', 2, A, 1, IP, ANRM, RCOND, W, IW, INFO )
CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
INFOT = 6
CALL DSYCON( 'U', 1, A, 1, IP, -1.0D0, RCOND, W, IW, INFO )
CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
*
ELSE IF( LSAMEN( 2, C2, 'SP' ) ) THEN
*
* Test error exits of the routines that use the Bunch-Kaufman
* factorization of a symmetric indefinite packed matrix.
*
* DSPTRF
*
SRNAMT = 'DSPTRF'
INFOT = 1
CALL DSPTRF( '/', 0, A, IP, INFO )
CALL CHKXER( 'DSPTRF', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSPTRF( 'U', -1, A, IP, INFO )
CALL CHKXER( 'DSPTRF', INFOT, NOUT, LERR, OK )
*
* DSPTRI
*
SRNAMT = 'DSPTRI'
INFOT = 1
CALL DSPTRI( '/', 0, A, IP, W, INFO )
CALL CHKXER( 'DSPTRI', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSPTRI( 'U', -1, A, IP, W, INFO )
CALL CHKXER( 'DSPTRI', INFOT, NOUT, LERR, OK )
*
* DSPTRS
*
SRNAMT = 'DSPTRS'
INFOT = 1
CALL DSPTRS( '/', 0, 0, A, IP, B, 1, INFO )
CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSPTRS( 'U', -1, 0, A, IP, B, 1, INFO )
CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DSPTRS( 'U', 0, -1, A, IP, B, 1, INFO )
CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL DSPTRS( 'U', 2, 1, A, IP, B, 1, INFO )
CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
*
* DSPRFS
*
SRNAMT = 'DSPRFS'
INFOT = 1
CALL DSPRFS( '/', 0, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
$ INFO )
CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSPRFS( 'U', -1, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
$ INFO )
CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DSPRFS( 'U', 0, -1, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
$ INFO )
CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL DSPRFS( 'U', 2, 1, A, AF, IP, B, 1, X, 2, R1, R2, W, IW,
$ INFO )
CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
INFOT = 10
CALL DSPRFS( 'U', 2, 1, A, AF, IP, B, 2, X, 1, R1, R2, W, IW,
$ INFO )
CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
*
* DSPCON
*
SRNAMT = 'DSPCON'
INFOT = 1
CALL DSPCON( '/', 0, A, IP, ANRM, RCOND, W, IW, INFO )
CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSPCON( 'U', -1, A, IP, ANRM, RCOND, W, IW, INFO )
CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DSPCON( 'U', 1, A, IP, -1.0D0, RCOND, W, IW, INFO )
CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
END IF
*
* Print a summary line.
*
CALL ALAESM( PATH, OK, NOUT )
*
RETURN
*
* End of DERRSY
*
END
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