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00001 *> \brief \b DERRSY
00002 *
00003 *  =========== DOCUMENTATION ===========
00004 *
00005 * Online html documentation available at 
00006 *            http://www.netlib.org/lapack/explore-html/ 
00007 *
00008 *  Definition:
00009 *  ===========
00010 *
00011 *       SUBROUTINE DERRSY( PATH, NUNIT )
00012 * 
00013 *       .. Scalar Arguments ..
00014 *       CHARACTER*3        PATH
00015 *       INTEGER            NUNIT
00016 *       ..
00017 *  
00018 *
00019 *> \par Purpose:
00020 *  =============
00021 *>
00022 *> \verbatim
00023 *>
00024 *> DERRSY tests the error exits for the DOUBLE PRECISION routines
00025 *> for symmetric indefinite matrices.
00026 *> \endverbatim
00027 *
00028 *  Arguments:
00029 *  ==========
00030 *
00031 *> \param[in] PATH
00032 *> \verbatim
00033 *>          PATH is CHARACTER*3
00034 *>          The LAPACK path name for the routines to be tested.
00035 *> \endverbatim
00036 *>
00037 *> \param[in] NUNIT
00038 *> \verbatim
00039 *>          NUNIT is INTEGER
00040 *>          The unit number for output.
00041 *> \endverbatim
00042 *
00043 *  Authors:
00044 *  ========
00045 *
00046 *> \author Univ. of Tennessee 
00047 *> \author Univ. of California Berkeley 
00048 *> \author Univ. of Colorado Denver 
00049 *> \author NAG Ltd. 
00050 *
00051 *> \date November 2011
00052 *
00053 *> \ingroup double_lin
00054 *
00055 *  =====================================================================
00056       SUBROUTINE DERRSY( PATH, NUNIT )
00057 *
00058 *  -- LAPACK test routine (version 3.4.0) --
00059 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
00060 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
00061 *     November 2011
00062 *
00063 *     .. Scalar Arguments ..
00064       CHARACTER*3        PATH
00065       INTEGER            NUNIT
00066 *     ..
00067 *
00068 *  =====================================================================
00069 *
00070 *     .. Parameters ..
00071       INTEGER            NMAX
00072       PARAMETER          ( NMAX = 4 )
00073 *     ..
00074 *     .. Local Scalars ..
00075       CHARACTER*2        C2
00076       INTEGER            I, INFO, J
00077       DOUBLE PRECISION   ANRM, RCOND
00078 *     ..
00079 *     .. Local Arrays ..
00080       INTEGER            IP( NMAX ), IW( NMAX )
00081       DOUBLE PRECISION   A( NMAX, NMAX ), AF( NMAX, NMAX ), B( NMAX ),
00082      $                   R1( NMAX ), R2( NMAX ), W( 3*NMAX ), X( NMAX )
00083 *     ..
00084 *     .. External Functions ..
00085       LOGICAL            LSAMEN
00086       EXTERNAL           LSAMEN
00087 *     ..
00088 *     .. External Subroutines ..
00089       EXTERNAL           ALAESM, CHKXER, DSPCON, DSPRFS, DSPTRF, DSPTRI,
00090      $                   DSPTRS, DSYCON, DSYRFS, DSYTF2, DSYTRF, DSYTRI,
00091      $                   DSYTRI2, DSYTRS
00092 *     ..
00093 *     .. Scalars in Common ..
00094       LOGICAL            LERR, OK
00095       CHARACTER*32       SRNAMT
00096       INTEGER            INFOT, NOUT
00097 *     ..
00098 *     .. Common blocks ..
00099       COMMON             / INFOC / INFOT, NOUT, OK, LERR
00100       COMMON             / SRNAMC / SRNAMT
00101 *     ..
00102 *     .. Intrinsic Functions ..
00103       INTRINSIC          DBLE
00104 *     ..
00105 *     .. Executable Statements ..
00106 *
00107       NOUT = NUNIT
00108       WRITE( NOUT, FMT = * )
00109       C2 = PATH( 2: 3 )
00110 *
00111 *     Set the variables to innocuous values.
00112 *
00113       DO 20 J = 1, NMAX
00114          DO 10 I = 1, NMAX
00115             A( I, J ) = 1.D0 / DBLE( I+J )
00116             AF( I, J ) = 1.D0 / DBLE( I+J )
00117    10    CONTINUE
00118          B( J ) = 0.D0
00119          R1( J ) = 0.D0
00120          R2( J ) = 0.D0
00121          W( J ) = 0.D0
00122          X( J ) = 0.D0
00123          IP( J ) = J
00124          IW( J ) = J
00125    20 CONTINUE
00126       ANRM = 1.0D0
00127       RCOND = 1.0D0
00128       OK = .TRUE.
00129 *
00130       IF( LSAMEN( 2, C2, 'SY' ) ) THEN
00131 *
00132 *        Test error exits of the routines that use the Bunch-Kaufman
00133 *        factorization of a symmetric indefinite matrix.
00134 *
00135 *        DSYTRF
00136 *
00137          SRNAMT = 'DSYTRF'
00138          INFOT = 1
00139          CALL DSYTRF( '/', 0, A, 1, IP, W, 1, INFO )
00140          CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
00141          INFOT = 2
00142          CALL DSYTRF( 'U', -1, A, 1, IP, W, 1, INFO )
00143          CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
00144          INFOT = 4
00145          CALL DSYTRF( 'U', 2, A, 1, IP, W, 4, INFO )
00146          CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
00147 *
00148 *        DSYTF2
00149 *
00150          SRNAMT = 'DSYTF2'
00151          INFOT = 1
00152          CALL DSYTF2( '/', 0, A, 1, IP, INFO )
00153          CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
00154          INFOT = 2
00155          CALL DSYTF2( 'U', -1, A, 1, IP, INFO )
00156          CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
00157          INFOT = 4
00158          CALL DSYTF2( 'U', 2, A, 1, IP, INFO )
00159          CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
00160 *
00161 *        DSYTRI
00162 *
00163          SRNAMT = 'DSYTRI'
00164          INFOT = 1
00165          CALL DSYTRI( '/', 0, A, 1, IP, W, INFO )
00166          CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
00167          INFOT = 2
00168          CALL DSYTRI( 'U', -1, A, 1, IP, W, INFO )
00169          CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
00170          INFOT = 4
00171          CALL DSYTRI( 'U', 2, A, 1, IP, W, INFO )
00172          CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
00173 *
00174 *        DSYTRI2
00175 *
00176          SRNAMT = 'DSYTRI2'
00177          INFOT = 1
00178          CALL DSYTRI2( '/', 0, A, 1, IP, W, IW(1), INFO )
00179          CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
00180          INFOT = 2
00181          CALL DSYTRI2( 'U', -1, A, 1, IP, W, IW(1), INFO )
00182          CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
00183          INFOT = 4
00184          CALL DSYTRI2( 'U', 2, A, 1, IP, W, IW(1), INFO )
00185          CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
00186 *
00187 *        DSYTRS
00188 *
00189          SRNAMT = 'DSYTRS'
00190          INFOT = 1
00191          CALL DSYTRS( '/', 0, 0, A, 1, IP, B, 1, INFO )
00192          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00193          INFOT = 2
00194          CALL DSYTRS( 'U', -1, 0, A, 1, IP, B, 1, INFO )
00195          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00196          INFOT = 3
00197          CALL DSYTRS( 'U', 0, -1, A, 1, IP, B, 1, INFO )
00198          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00199          INFOT = 5
00200          CALL DSYTRS( 'U', 2, 1, A, 1, IP, B, 2, INFO )
00201          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00202          INFOT = 8
00203          CALL DSYTRS( 'U', 2, 1, A, 2, IP, B, 1, INFO )
00204          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00205 *
00206 *        DSYRFS
00207 *
00208          SRNAMT = 'DSYRFS'
00209          INFOT = 1
00210          CALL DSYRFS( '/', 0, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2, W,
00211      $                IW, INFO )
00212          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00213          INFOT = 2
00214          CALL DSYRFS( 'U', -1, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
00215      $                W, IW, INFO )
00216          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00217          INFOT = 3
00218          CALL DSYRFS( 'U', 0, -1, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
00219      $                W, IW, INFO )
00220          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00221          INFOT = 5
00222          CALL DSYRFS( 'U', 2, 1, A, 1, AF, 2, IP, B, 2, X, 2, R1, R2, W,
00223      $                IW, INFO )
00224          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00225          INFOT = 7
00226          CALL DSYRFS( 'U', 2, 1, A, 2, AF, 1, IP, B, 2, X, 2, R1, R2, W,
00227      $                IW, INFO )
00228          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00229          INFOT = 10
00230          CALL DSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 1, X, 2, R1, R2, W,
00231      $                IW, INFO )
00232          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00233          INFOT = 12
00234          CALL DSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 2, X, 1, R1, R2, W,
00235      $                IW, INFO )
00236          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00237 *
00238 *        DSYCON
00239 *
00240          SRNAMT = 'DSYCON'
00241          INFOT = 1
00242          CALL DSYCON( '/', 0, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00243          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00244          INFOT = 2
00245          CALL DSYCON( 'U', -1, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00246          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00247          INFOT = 4
00248          CALL DSYCON( 'U', 2, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00249          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00250          INFOT = 6
00251          CALL DSYCON( 'U', 1, A, 1, IP, -1.0D0, RCOND, W, IW, INFO )
00252          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00253 *
00254       ELSE IF( LSAMEN( 2, C2, 'SP' ) ) THEN
00255 *
00256 *        Test error exits of the routines that use the Bunch-Kaufman
00257 *        factorization of a symmetric indefinite packed matrix.
00258 *
00259 *        DSPTRF
00260 *
00261          SRNAMT = 'DSPTRF'
00262          INFOT = 1
00263          CALL DSPTRF( '/', 0, A, IP, INFO )
00264          CALL CHKXER( 'DSPTRF', INFOT, NOUT, LERR, OK )
00265          INFOT = 2
00266          CALL DSPTRF( 'U', -1, A, IP, INFO )
00267          CALL CHKXER( 'DSPTRF', INFOT, NOUT, LERR, OK )
00268 *
00269 *        DSPTRI
00270 *
00271          SRNAMT = 'DSPTRI'
00272          INFOT = 1
00273          CALL DSPTRI( '/', 0, A, IP, W, INFO )
00274          CALL CHKXER( 'DSPTRI', INFOT, NOUT, LERR, OK )
00275          INFOT = 2
00276          CALL DSPTRI( 'U', -1, A, IP, W, INFO )
00277          CALL CHKXER( 'DSPTRI', INFOT, NOUT, LERR, OK )
00278 *
00279 *        DSPTRS
00280 *
00281          SRNAMT = 'DSPTRS'
00282          INFOT = 1
00283          CALL DSPTRS( '/', 0, 0, A, IP, B, 1, INFO )
00284          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00285          INFOT = 2
00286          CALL DSPTRS( 'U', -1, 0, A, IP, B, 1, INFO )
00287          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00288          INFOT = 3
00289          CALL DSPTRS( 'U', 0, -1, A, IP, B, 1, INFO )
00290          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00291          INFOT = 7
00292          CALL DSPTRS( 'U', 2, 1, A, IP, B, 1, INFO )
00293          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00294 *
00295 *        DSPRFS
00296 *
00297          SRNAMT = 'DSPRFS'
00298          INFOT = 1
00299          CALL DSPRFS( '/', 0, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00300      $                INFO )
00301          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00302          INFOT = 2
00303          CALL DSPRFS( 'U', -1, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00304      $                INFO )
00305          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00306          INFOT = 3
00307          CALL DSPRFS( 'U', 0, -1, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00308      $                INFO )
00309          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00310          INFOT = 8
00311          CALL DSPRFS( 'U', 2, 1, A, AF, IP, B, 1, X, 2, R1, R2, W, IW,
00312      $                INFO )
00313          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00314          INFOT = 10
00315          CALL DSPRFS( 'U', 2, 1, A, AF, IP, B, 2, X, 1, R1, R2, W, IW,
00316      $                INFO )
00317          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00318 *
00319 *        DSPCON
00320 *
00321          SRNAMT = 'DSPCON'
00322          INFOT = 1
00323          CALL DSPCON( '/', 0, A, IP, ANRM, RCOND, W, IW, INFO )
00324          CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
00325          INFOT = 2
00326          CALL DSPCON( 'U', -1, A, IP, ANRM, RCOND, W, IW, INFO )
00327          CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
00328          INFOT = 5
00329          CALL DSPCON( 'U', 1, A, IP, -1.0D0, RCOND, W, IW, INFO )
00330          CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
00331       END IF
00332 *
00333 *     Print a summary line.
00334 *
00335       CALL ALAESM( PATH, OK, NOUT )
00336 *
00337       RETURN
00338 *
00339 *     End of DERRSY
00340 *
00341       END