LAPACK  3.4.1
LAPACK: Linear Algebra PACKage
derrsy.f
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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 April 2012
00052 *
00053 *> \ingroup double_lin
00054 *
00055 *  =====================================================================
00056       SUBROUTINE DERRSY( PATH, NUNIT )
00057 *
00058 *  -- LAPACK test routine (version 3.4.1) --
00059 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
00060 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
00061 *     April 2012
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 factorization
00133 *        of a symmetric indefinite matrix with patrial
00134 *        (Bunch-Kaufman) pivoting.
00135 *
00136 *        DSYTRF
00137 *
00138          SRNAMT = 'DSYTRF'
00139          INFOT = 1
00140          CALL DSYTRF( '/', 0, A, 1, IP, W, 1, INFO )
00141          CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
00142          INFOT = 2
00143          CALL DSYTRF( 'U', -1, A, 1, IP, W, 1, INFO )
00144          CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
00145          INFOT = 4
00146          CALL DSYTRF( 'U', 2, A, 1, IP, W, 4, INFO )
00147          CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
00148 *
00149 *        DSYTF2
00150 *
00151          SRNAMT = 'DSYTF2'
00152          INFOT = 1
00153          CALL DSYTF2( '/', 0, A, 1, IP, INFO )
00154          CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
00155          INFOT = 2
00156          CALL DSYTF2( 'U', -1, A, 1, IP, INFO )
00157          CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
00158          INFOT = 4
00159          CALL DSYTF2( 'U', 2, A, 1, IP, INFO )
00160          CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
00161 *
00162 *        DSYTRI
00163 *
00164          SRNAMT = 'DSYTRI'
00165          INFOT = 1
00166          CALL DSYTRI( '/', 0, A, 1, IP, W, INFO )
00167          CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
00168          INFOT = 2
00169          CALL DSYTRI( 'U', -1, A, 1, IP, W, INFO )
00170          CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
00171          INFOT = 4
00172          CALL DSYTRI( 'U', 2, A, 1, IP, W, INFO )
00173          CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
00174 *
00175 *        DSYTRI2
00176 *
00177          SRNAMT = 'DSYTRI2'
00178          INFOT = 1
00179          CALL DSYTRI2( '/', 0, A, 1, IP, W, IW(1), INFO )
00180          CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
00181          INFOT = 2
00182          CALL DSYTRI2( 'U', -1, A, 1, IP, W, IW(1), INFO )
00183          CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
00184          INFOT = 4
00185          CALL DSYTRI2( 'U', 2, A, 1, IP, W, IW(1), INFO )
00186          CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
00187 *
00188 *        DSYTRS
00189 *
00190          SRNAMT = 'DSYTRS'
00191          INFOT = 1
00192          CALL DSYTRS( '/', 0, 0, A, 1, IP, B, 1, INFO )
00193          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00194          INFOT = 2
00195          CALL DSYTRS( 'U', -1, 0, A, 1, IP, B, 1, INFO )
00196          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00197          INFOT = 3
00198          CALL DSYTRS( 'U', 0, -1, A, 1, IP, B, 1, INFO )
00199          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00200          INFOT = 5
00201          CALL DSYTRS( 'U', 2, 1, A, 1, IP, B, 2, INFO )
00202          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00203          INFOT = 8
00204          CALL DSYTRS( 'U', 2, 1, A, 2, IP, B, 1, INFO )
00205          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00206 *
00207 *        DSYRFS
00208 *
00209          SRNAMT = 'DSYRFS'
00210          INFOT = 1
00211          CALL DSYRFS( '/', 0, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2, W,
00212      $                IW, INFO )
00213          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00214          INFOT = 2
00215          CALL DSYRFS( 'U', -1, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
00216      $                W, IW, INFO )
00217          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00218          INFOT = 3
00219          CALL DSYRFS( 'U', 0, -1, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
00220      $                W, IW, INFO )
00221          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00222          INFOT = 5
00223          CALL DSYRFS( 'U', 2, 1, A, 1, AF, 2, IP, B, 2, X, 2, R1, R2, W,
00224      $                IW, INFO )
00225          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00226          INFOT = 7
00227          CALL DSYRFS( 'U', 2, 1, A, 2, AF, 1, IP, B, 2, X, 2, R1, R2, W,
00228      $                IW, INFO )
00229          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00230          INFOT = 10
00231          CALL DSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 1, X, 2, R1, R2, W,
00232      $                IW, INFO )
00233          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00234          INFOT = 12
00235          CALL DSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 2, X, 1, R1, R2, W,
00236      $                IW, INFO )
00237          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00238 *
00239 *        DSYCON
00240 *
00241          SRNAMT = 'DSYCON'
00242          INFOT = 1
00243          CALL DSYCON( '/', 0, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00244          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00245          INFOT = 2
00246          CALL DSYCON( 'U', -1, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00247          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00248          INFOT = 4
00249          CALL DSYCON( 'U', 2, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00250          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00251          INFOT = 6
00252          CALL DSYCON( 'U', 1, A, 1, IP, -1.0D0, RCOND, W, IW, INFO )
00253          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00254 *
00255       ELSE IF( LSAMEN( 2, C2, 'SP' ) ) THEN
00256 *
00257 *        Test error exits of the routines that use factorization
00258 *        of a symmetric indefinite packed matrix with patrial
00259 *        (Bunch-Kaufman) pivoting.
00260 *
00261 *        DSPTRF
00262 *
00263          SRNAMT = 'DSPTRF'
00264          INFOT = 1
00265          CALL DSPTRF( '/', 0, A, IP, INFO )
00266          CALL CHKXER( 'DSPTRF', INFOT, NOUT, LERR, OK )
00267          INFOT = 2
00268          CALL DSPTRF( 'U', -1, A, IP, INFO )
00269          CALL CHKXER( 'DSPTRF', INFOT, NOUT, LERR, OK )
00270 *
00271 *        DSPTRI
00272 *
00273          SRNAMT = 'DSPTRI'
00274          INFOT = 1
00275          CALL DSPTRI( '/', 0, A, IP, W, INFO )
00276          CALL CHKXER( 'DSPTRI', INFOT, NOUT, LERR, OK )
00277          INFOT = 2
00278          CALL DSPTRI( 'U', -1, A, IP, W, INFO )
00279          CALL CHKXER( 'DSPTRI', INFOT, NOUT, LERR, OK )
00280 *
00281 *        DSPTRS
00282 *
00283          SRNAMT = 'DSPTRS'
00284          INFOT = 1
00285          CALL DSPTRS( '/', 0, 0, A, IP, B, 1, INFO )
00286          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00287          INFOT = 2
00288          CALL DSPTRS( 'U', -1, 0, A, IP, B, 1, INFO )
00289          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00290          INFOT = 3
00291          CALL DSPTRS( 'U', 0, -1, A, IP, B, 1, INFO )
00292          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00293          INFOT = 7
00294          CALL DSPTRS( 'U', 2, 1, A, IP, B, 1, INFO )
00295          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00296 *
00297 *        DSPRFS
00298 *
00299          SRNAMT = 'DSPRFS'
00300          INFOT = 1
00301          CALL DSPRFS( '/', 0, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00302      $                INFO )
00303          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00304          INFOT = 2
00305          CALL DSPRFS( 'U', -1, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00306      $                INFO )
00307          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00308          INFOT = 3
00309          CALL DSPRFS( 'U', 0, -1, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00310      $                INFO )
00311          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00312          INFOT = 8
00313          CALL DSPRFS( 'U', 2, 1, A, AF, IP, B, 1, X, 2, R1, R2, W, IW,
00314      $                INFO )
00315          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00316          INFOT = 10
00317          CALL DSPRFS( 'U', 2, 1, A, AF, IP, B, 2, X, 1, R1, R2, W, IW,
00318      $                INFO )
00319          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00320 *
00321 *        DSPCON
00322 *
00323          SRNAMT = 'DSPCON'
00324          INFOT = 1
00325          CALL DSPCON( '/', 0, A, IP, ANRM, RCOND, W, IW, INFO )
00326          CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
00327          INFOT = 2
00328          CALL DSPCON( 'U', -1, A, IP, ANRM, RCOND, W, IW, INFO )
00329          CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
00330          INFOT = 5
00331          CALL DSPCON( 'U', 1, A, IP, -1.0D0, RCOND, W, IW, INFO )
00332          CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
00333       END IF
00334 *
00335 *     Print a summary line.
00336 *
00337       CALL ALAESM( PATH, OK, NOUT )
00338 *
00339       RETURN
00340 *
00341 *     End of DERRSY
00342 *
00343       END
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