SUBROUTINE SERRSY( 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
* =======
*
* SERRSY tests the error exits for the REAL 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
REAL ANRM, RCOND
* ..
* .. Local Arrays ..
INTEGER IP( NMAX ), IW( NMAX )
REAL 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, SSPCON, SSPRFS, SSPTRF, SSPTRI,
$ SSPTRS, SSYCON, SSYRFS, SSYTF2, SSYTRF, SSYTRI,
$ SSYTRS
* ..
* .. 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 REAL
* ..
* .. 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. / REAL( I+J )
AF( I, J ) = 1. / REAL( I+J )
10 CONTINUE
B( J ) = 0.
R1( J ) = 0.
R2( J ) = 0.
W( J ) = 0.
X( J ) = 0.
IP( J ) = J
IW( J ) = J
20 CONTINUE
ANRM = 1.0
RCOND = 1.0
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.
*
* SSYTRF
*
SRNAMT = 'SSYTRF'
INFOT = 1
CALL SSYTRF( '/', 0, A, 1, IP, W, 1, INFO )
CALL CHKXER( 'SSYTRF', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSYTRF( 'U', -1, A, 1, IP, W, 1, INFO )
CALL CHKXER( 'SSYTRF', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL SSYTRF( 'U', 2, A, 1, IP, W, 4, INFO )
CALL CHKXER( 'SSYTRF', INFOT, NOUT, LERR, OK )
*
* SSYTF2
*
SRNAMT = 'SSYTF2'
INFOT = 1
CALL SSYTF2( '/', 0, A, 1, IP, INFO )
CALL CHKXER( 'SSYTF2', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSYTF2( 'U', -1, A, 1, IP, INFO )
CALL CHKXER( 'SSYTF2', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL SSYTF2( 'U', 2, A, 1, IP, INFO )
CALL CHKXER( 'SSYTF2', INFOT, NOUT, LERR, OK )
*
* SSYTRI
*
SRNAMT = 'SSYTRI'
INFOT = 1
CALL SSYTRI( '/', 0, A, 1, IP, W, INFO )
CALL CHKXER( 'SSYTRI', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSYTRI( 'U', -1, A, 1, IP, W, INFO )
CALL CHKXER( 'SSYTRI', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL SSYTRI( 'U', 2, A, 1, IP, W, INFO )
CALL CHKXER( 'SSYTRI', INFOT, NOUT, LERR, OK )
*
* SSYTRS
*
SRNAMT = 'SSYTRS'
INFOT = 1
CALL SSYTRS( '/', 0, 0, A, 1, IP, B, 1, INFO )
CALL CHKXER( 'SSYTRS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSYTRS( 'U', -1, 0, A, 1, IP, B, 1, INFO )
CALL CHKXER( 'SSYTRS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL SSYTRS( 'U', 0, -1, A, 1, IP, B, 1, INFO )
CALL CHKXER( 'SSYTRS', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL SSYTRS( 'U', 2, 1, A, 1, IP, B, 2, INFO )
CALL CHKXER( 'SSYTRS', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL SSYTRS( 'U', 2, 1, A, 2, IP, B, 1, INFO )
CALL CHKXER( 'SSYTRS', INFOT, NOUT, LERR, OK )
*
* SSYRFS
*
SRNAMT = 'SSYRFS'
INFOT = 1
CALL SSYRFS( '/', 0, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2, W,
$ IW, INFO )
CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSYRFS( 'U', -1, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
$ W, IW, INFO )
CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL SSYRFS( 'U', 0, -1, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
$ W, IW, INFO )
CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL SSYRFS( 'U', 2, 1, A, 1, AF, 2, IP, B, 2, X, 2, R1, R2, W,
$ IW, INFO )
CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL SSYRFS( 'U', 2, 1, A, 2, AF, 1, IP, B, 2, X, 2, R1, R2, W,
$ IW, INFO )
CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 10
CALL SSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 1, X, 2, R1, R2, W,
$ IW, INFO )
CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
INFOT = 12
CALL SSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 2, X, 1, R1, R2, W,
$ IW, INFO )
CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
*
* SSYCON
*
SRNAMT = 'SSYCON'
INFOT = 1
CALL SSYCON( '/', 0, A, 1, IP, ANRM, RCOND, W, IW, INFO )
CALL CHKXER( 'SSYCON', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSYCON( 'U', -1, A, 1, IP, ANRM, RCOND, W, IW, INFO )
CALL CHKXER( 'SSYCON', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL SSYCON( 'U', 2, A, 1, IP, ANRM, RCOND, W, IW, INFO )
CALL CHKXER( 'SSYCON', INFOT, NOUT, LERR, OK )
INFOT = 6
CALL SSYCON( 'U', 1, A, 1, IP, -1.0, RCOND, W, IW, INFO )
CALL CHKXER( 'SSYCON', 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.
*
* SSPTRF
*
SRNAMT = 'SSPTRF'
INFOT = 1
CALL SSPTRF( '/', 0, A, IP, INFO )
CALL CHKXER( 'SSPTRF', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSPTRF( 'U', -1, A, IP, INFO )
CALL CHKXER( 'SSPTRF', INFOT, NOUT, LERR, OK )
*
* SSPTRI
*
SRNAMT = 'SSPTRI'
INFOT = 1
CALL SSPTRI( '/', 0, A, IP, W, INFO )
CALL CHKXER( 'SSPTRI', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSPTRI( 'U', -1, A, IP, W, INFO )
CALL CHKXER( 'SSPTRI', INFOT, NOUT, LERR, OK )
*
* SSPTRS
*
SRNAMT = 'SSPTRS'
INFOT = 1
CALL SSPTRS( '/', 0, 0, A, IP, B, 1, INFO )
CALL CHKXER( 'SSPTRS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSPTRS( 'U', -1, 0, A, IP, B, 1, INFO )
CALL CHKXER( 'SSPTRS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL SSPTRS( 'U', 0, -1, A, IP, B, 1, INFO )
CALL CHKXER( 'SSPTRS', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL SSPTRS( 'U', 2, 1, A, IP, B, 1, INFO )
CALL CHKXER( 'SSPTRS', INFOT, NOUT, LERR, OK )
*
* SSPRFS
*
SRNAMT = 'SSPRFS'
INFOT = 1
CALL SSPRFS( '/', 0, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
$ INFO )
CALL CHKXER( 'SSPRFS', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSPRFS( 'U', -1, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
$ INFO )
CALL CHKXER( 'SSPRFS', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL SSPRFS( 'U', 0, -1, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
$ INFO )
CALL CHKXER( 'SSPRFS', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL SSPRFS( 'U', 2, 1, A, AF, IP, B, 1, X, 2, R1, R2, W, IW,
$ INFO )
CALL CHKXER( 'SSPRFS', INFOT, NOUT, LERR, OK )
INFOT = 10
CALL SSPRFS( 'U', 2, 1, A, AF, IP, B, 2, X, 1, R1, R2, W, IW,
$ INFO )
CALL CHKXER( 'SSPRFS', INFOT, NOUT, LERR, OK )
*
* SSPCON
*
SRNAMT = 'SSPCON'
INFOT = 1
CALL SSPCON( '/', 0, A, IP, ANRM, RCOND, W, IW, INFO )
CALL CHKXER( 'SSPCON', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL SSPCON( 'U', -1, A, IP, ANRM, RCOND, W, IW, INFO )
CALL CHKXER( 'SSPCON', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL SSPCON( 'U', 1, A, IP, -1.0, RCOND, W, IW, INFO )
CALL CHKXER( 'SSPCON', INFOT, NOUT, LERR, OK )
END IF
*
* Print a summary line.
*
CALL ALAESM( PATH, OK, NOUT )
*
RETURN
*
* End of SERRSY
*
END