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, $ 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 ) * * 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