LAPACK: TESTING/LIN/derrsyx.f Source File

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00001       SUBROUTINE DERRSY( PATH, NUNIT )
00002 *
00003 *  -- LAPACK test routine (version 3.2.1) --
00004 *     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
00005 *     April 2009
00006 *
00007 *     .. Scalar Arguments ..
00008       CHARACTER*3        PATH
00009       INTEGER            NUNIT
00010 *     ..
00011 *
00012 *  Purpose
00013 *  =======
00014 *
00015 *  DERRSY tests the error exits for the DOUBLE PRECISION routines
00016 *  for symmetric indefinite matrices.
00017 *
00018 *  Note that this file is used only when the XBLAS are available,
00019 *  otherwise derrsy.f defines this subroutine.
00020 *
00021 *  Arguments
00022 *  =========
00023 *
00024 *  PATH    (input) CHARACTER*3
00025 *          The LAPACK path name for the routines to be tested.
00026 *
00027 *  NUNIT   (input) INTEGER
00028 *          The unit number for output.
00029 *
00030 *  =====================================================================
00031 *
00032 *     .. Parameters ..
00033       INTEGER            NMAX
00034       PARAMETER          ( NMAX = 4 )
00035 *     ..
00036 *     .. Local Scalars ..
00037       CHARACTER          EQ
00038       CHARACTER*2        C2
00039       INTEGER            I, INFO, J, N_ERR_BNDS, NPARAMS
00040       DOUBLE PRECISION   ANRM, RCOND, BERR
00041 *     ..
00042 *     .. Local Arrays ..
00043       INTEGER            IP( NMAX ), IW( NMAX )
00044       DOUBLE PRECISION   A( NMAX, NMAX ), AF( NMAX, NMAX ), B( NMAX ),
00045      $                   R1( NMAX ), R2( NMAX ), W( 3*NMAX ), X( NMAX ),
00046      $                   S( NMAX ), ERR_BNDS_N( NMAX, 3 ),
00047      $                   ERR_BNDS_C( NMAX, 3 ), PARAMS( 1 )
00048 *     ..
00049 *     .. External Functions ..
00050       LOGICAL            LSAMEN
00051       EXTERNAL           LSAMEN
00052 *     ..
00053 *     .. External Subroutines ..
00054       EXTERNAL           ALAESM, CHKXER, DSPCON, DSPRFS, DSPTRF, DSPTRI,
00055      $                   DSPTRS, DSYCON, DSYRFS, DSYTF2, DSYTRF, DSYTRI,
00056      $                   DSYTRI2, DSYTRS, DSYRFSX
00057 *     ..
00058 *     .. Scalars in Common ..
00059       LOGICAL            LERR, OK
00060       CHARACTER*32       SRNAMT
00061       INTEGER            INFOT, NOUT
00062 *     ..
00063 *     .. Common blocks ..
00064       COMMON             / INFOC / INFOT, NOUT, OK, LERR
00065       COMMON             / SRNAMC / SRNAMT
00066 *     ..
00067 *     .. Intrinsic Functions ..
00068       INTRINSIC          DBLE
00069 *     ..
00070 *     .. Executable Statements ..
00071 *
00072       NOUT = NUNIT
00073       WRITE( NOUT, FMT = * )
00074       C2 = PATH( 2: 3 )
00075 *
00076 *     Set the variables to innocuous values.
00077 *
00078       DO 20 J = 1, NMAX
00079          DO 10 I = 1, NMAX
00080             A( I, J ) = 1.D0 / DBLE( I+J )
00081             AF( I, J ) = 1.D0 / DBLE( I+J )
00082    10    CONTINUE
00083          B( J ) = 0.D0
00084          R1( J ) = 0.D0
00085          R2( J ) = 0.D0
00086          W( J ) = 0.D0
00087          X( J ) = 0.D0
00088          S( J ) = 0.D0
00089          IP( J ) = J
00090          IW( J ) = J
00091    20 CONTINUE
00092       ANRM = 1.0D0
00093       RCOND = 1.0D0
00094       OK = .TRUE.
00095 *
00096       IF( LSAMEN( 2, C2, 'SY' ) ) THEN
00097 *
00098 *        Test error exits of the routines that use the Bunch-Kaufman
00099 *        factorization of a symmetric indefinite matrix.
00100 *
00101 *        DSYTRF
00102 *
00103          SRNAMT = 'DSYTRF'
00104          INFOT = 1
00105          CALL DSYTRF( '/', 0, A, 1, IP, W, 1, INFO )
00106          CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
00107          INFOT = 2
00108          CALL DSYTRF( 'U', -1, A, 1, IP, W, 1, INFO )
00109          CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
00110          INFOT = 4
00111          CALL DSYTRF( 'U', 2, A, 1, IP, W, 4, INFO )
00112          CALL CHKXER( 'DSYTRF', INFOT, NOUT, LERR, OK )
00113 *
00114 *        DSYTF2
00115 *
00116          SRNAMT = 'DSYTF2'
00117          INFOT = 1
00118          CALL DSYTF2( '/', 0, A, 1, IP, INFO )
00119          CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
00120          INFOT = 2
00121          CALL DSYTF2( 'U', -1, A, 1, IP, INFO )
00122          CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
00123          INFOT = 4
00124          CALL DSYTF2( 'U', 2, A, 1, IP, INFO )
00125          CALL CHKXER( 'DSYTF2', INFOT, NOUT, LERR, OK )
00126 *
00127 *        DSYTRI
00128 *
00129          SRNAMT = 'DSYTRI'
00130          INFOT = 1
00131          CALL DSYTRI( '/', 0, A, 1, IP, W, INFO )
00132          CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
00133          INFOT = 2
00134          CALL DSYTRI( 'U', -1, A, 1, IP, W, INFO )
00135          CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
00136          INFOT = 4
00137          CALL DSYTRI( 'U', 2, A, 1, IP, W, INFO )
00138          CALL CHKXER( 'DSYTRI', INFOT, NOUT, LERR, OK )
00139 *
00140 *        DSYTRI2
00141 *
00142          SRNAMT = 'DSYTRI2'
00143          INFOT = 1
00144          CALL DSYTRI2( '/', 0, A, 1, IP, W, IW, INFO )
00145          CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
00146          INFOT = 2
00147          CALL DSYTRI2( 'U', -1, A, 1, IP, W, IW, INFO )
00148          CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
00149          INFOT = 4
00150          CALL DSYTRI2( 'U', 2, A, 1, IP, W, IW, INFO )
00151          CALL CHKXER( 'DSYTRI2', INFOT, NOUT, LERR, OK )
00152 *
00153 *        DSYTRS
00154 *
00155          SRNAMT = 'DSYTRS'
00156          INFOT = 1
00157          CALL DSYTRS( '/', 0, 0, A, 1, IP, B, 1, INFO )
00158          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00159          INFOT = 2
00160          CALL DSYTRS( 'U', -1, 0, A, 1, IP, B, 1, INFO )
00161          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00162          INFOT = 3
00163          CALL DSYTRS( 'U', 0, -1, A, 1, IP, B, 1, INFO )
00164          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00165          INFOT = 5
00166          CALL DSYTRS( 'U', 2, 1, A, 1, IP, B, 2, INFO )
00167          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00168          INFOT = 8
00169          CALL DSYTRS( 'U', 2, 1, A, 2, IP, B, 1, INFO )
00170          CALL CHKXER( 'DSYTRS', INFOT, NOUT, LERR, OK )
00171 *
00172 *        DSYRFS
00173 *
00174          SRNAMT = 'DSYRFS'
00175          INFOT = 1
00176          CALL DSYRFS( '/', 0, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2, W,
00177      $                IW, INFO )
00178          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00179          INFOT = 2
00180          CALL DSYRFS( 'U', -1, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
00181      $                W, IW, INFO )
00182          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00183          INFOT = 3
00184          CALL DSYRFS( 'U', 0, -1, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
00185      $                W, IW, INFO )
00186          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00187          INFOT = 5
00188          CALL DSYRFS( 'U', 2, 1, A, 1, AF, 2, IP, B, 2, X, 2, R1, R2, W,
00189      $                IW, INFO )
00190          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00191          INFOT = 7
00192          CALL DSYRFS( 'U', 2, 1, A, 2, AF, 1, IP, B, 2, X, 2, R1, R2, W,
00193      $                IW, INFO )
00194          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00195          INFOT = 10
00196          CALL DSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 1, X, 2, R1, R2, W,
00197      $                IW, INFO )
00198          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00199          INFOT = 12
00200          CALL DSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 2, X, 1, R1, R2, W,
00201      $                IW, INFO )
00202          CALL CHKXER( 'DSYRFS', INFOT, NOUT, LERR, OK )
00203 *
00204 *        DSYRFSX
00205 *
00206          N_ERR_BNDS = 3
00207          NPARAMS = 0
00208          SRNAMT = 'DSYRFSX'
00209          INFOT = 1
00210          CALL DSYRFSX( '/', EQ, 0, 0, A, 1, AF, 1, IP, S, B, 1, X, 1,
00211      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00212      $        PARAMS, W, IW, INFO )
00213          CALL CHKXER( 'DSYRFSX', INFOT, NOUT, LERR, OK )
00214          INFOT = 2
00215          CALL DSYRFSX( 'U', EQ, -1, 0, A, 1, AF, 1, IP, S, B, 1, X, 1,
00216      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00217      $        PARAMS, W, IW, INFO )
00218          CALL CHKXER( 'DSYRFSX', INFOT, NOUT, LERR, OK )
00219          EQ = 'N'
00220          INFOT = 3
00221          CALL DSYRFSX( 'U', EQ, -1, 0, A, 1, AF, 1, IP, S, B, 1, X, 1,
00222      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00223      $        PARAMS, W, IW, INFO )
00224          CALL CHKXER( 'DSYRFSX', INFOT, NOUT, LERR, OK )
00225          INFOT = 4
00226          CALL DSYRFSX( 'U', EQ, 0, -1, A, 1, AF, 1, IP, S, B, 1, X, 1,
00227      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00228      $        PARAMS, W, IW, INFO )
00229          CALL CHKXER( 'DSYRFSX', INFOT, NOUT, LERR, OK )
00230          INFOT = 6
00231          CALL DSYRFSX( 'U', EQ, 2, 1, A, 1, AF, 2, IP, S, B, 2, X, 2,
00232      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00233      $        PARAMS, W, IW, INFO )
00234          CALL CHKXER( 'DSYRFSX', INFOT, NOUT, LERR, OK )
00235          INFOT = 8
00236          CALL DSYRFSX( 'U', EQ, 2, 1, A, 2, AF, 1, IP, S, B, 2, X, 2,
00237      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00238      $        PARAMS, W, IW, INFO )
00239          CALL CHKXER( 'DSYRFSX', INFOT, NOUT, LERR, OK )
00240          INFOT = 11
00241          CALL DSYRFSX( 'U', EQ, 2, 1, A, 2, AF, 2, IP, S, B, 1, X, 2,
00242      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00243      $        PARAMS, W, IW, INFO )
00244          CALL CHKXER( 'DSYRFSX', INFOT, NOUT, LERR, OK )
00245          INFOT = 13
00246          CALL DSYRFSX( 'U', EQ, 2, 1, A, 2, AF, 2, IP, S, B, 2, X, 1,
00247      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00248      $        PARAMS, W, IW, INFO )
00249          CALL CHKXER( 'DSYRFSX', INFOT, NOUT, LERR, OK )
00250 *
00251 *        DSYCON
00252 *
00253          SRNAMT = 'DSYCON'
00254          INFOT = 1
00255          CALL DSYCON( '/', 0, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00256          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00257          INFOT = 2
00258          CALL DSYCON( 'U', -1, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00259          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00260          INFOT = 4
00261          CALL DSYCON( 'U', 2, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00262          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00263          INFOT = 6
00264          CALL DSYCON( 'U', 1, A, 1, IP, -1.0D0, RCOND, W, IW, INFO )
00265          CALL CHKXER( 'DSYCON', INFOT, NOUT, LERR, OK )
00266 *
00267       ELSE IF( LSAMEN( 2, C2, 'SP' ) ) THEN
00268 *
00269 *        Test error exits of the routines that use the Bunch-Kaufman
00270 *        factorization of a symmetric indefinite packed matrix.
00271 *
00272 *        DSPTRF
00273 *
00274          SRNAMT = 'DSPTRF'
00275          INFOT = 1
00276          CALL DSPTRF( '/', 0, A, IP, INFO )
00277          CALL CHKXER( 'DSPTRF', INFOT, NOUT, LERR, OK )
00278          INFOT = 2
00279          CALL DSPTRF( 'U', -1, A, IP, INFO )
00280          CALL CHKXER( 'DSPTRF', INFOT, NOUT, LERR, OK )
00281 *
00282 *        DSPTRI
00283 *
00284          SRNAMT = 'DSPTRI'
00285          INFOT = 1
00286          CALL DSPTRI( '/', 0, A, IP, W, INFO )
00287          CALL CHKXER( 'DSPTRI', INFOT, NOUT, LERR, OK )
00288          INFOT = 2
00289          CALL DSPTRI( 'U', -1, A, IP, W, INFO )
00290          CALL CHKXER( 'DSPTRI', INFOT, NOUT, LERR, OK )
00291 *
00292 *        DSPTRS
00293 *
00294          SRNAMT = 'DSPTRS'
00295          INFOT = 1
00296          CALL DSPTRS( '/', 0, 0, A, IP, B, 1, INFO )
00297          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00298          INFOT = 2
00299          CALL DSPTRS( 'U', -1, 0, A, IP, B, 1, INFO )
00300          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00301          INFOT = 3
00302          CALL DSPTRS( 'U', 0, -1, A, IP, B, 1, INFO )
00303          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00304          INFOT = 7
00305          CALL DSPTRS( 'U', 2, 1, A, IP, B, 1, INFO )
00306          CALL CHKXER( 'DSPTRS', INFOT, NOUT, LERR, OK )
00307 *
00308 *        DSPRFS
00309 *
00310          SRNAMT = 'DSPRFS'
00311          INFOT = 1
00312          CALL DSPRFS( '/', 0, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00313      $                INFO )
00314          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00315          INFOT = 2
00316          CALL DSPRFS( 'U', -1, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00317      $                INFO )
00318          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00319          INFOT = 3
00320          CALL DSPRFS( 'U', 0, -1, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00321      $                INFO )
00322          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00323          INFOT = 8
00324          CALL DSPRFS( 'U', 2, 1, A, AF, IP, B, 1, X, 2, R1, R2, W, IW,
00325      $                INFO )
00326          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00327          INFOT = 10
00328          CALL DSPRFS( 'U', 2, 1, A, AF, IP, B, 2, X, 1, R1, R2, W, IW,
00329      $                INFO )
00330          CALL CHKXER( 'DSPRFS', INFOT, NOUT, LERR, OK )
00331 *
00332 *        DSPCON
00333 *
00334          SRNAMT = 'DSPCON'
00335          INFOT = 1
00336          CALL DSPCON( '/', 0, A, IP, ANRM, RCOND, W, IW, INFO )
00337          CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
00338          INFOT = 2
00339          CALL DSPCON( 'U', -1, A, IP, ANRM, RCOND, W, IW, INFO )
00340          CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
00341          INFOT = 5
00342          CALL DSPCON( 'U', 1, A, IP, -1.0D0, RCOND, W, IW, INFO )
00343          CALL CHKXER( 'DSPCON', INFOT, NOUT, LERR, OK )
00344       END IF
00345 *
00346 *     Print a summary line.
00347 *
00348       CALL ALAESM( PATH, OK, NOUT )
00349 *
00350       RETURN
00351 *
00352 *     End of DERRSY
00353 *
00354       END