LAPACK: TESTING/LIN/serrsyx.f Source File

00001       SUBROUTINE SERRSY( PATH, NUNIT )
00002 *
00003 *  -- LAPACK test routine (version 3.2) --
00004 *     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
00005 *     November 2006
00006 *
00007 *     .. Scalar Arguments ..
00008       CHARACTER*3        PATH
00009       INTEGER            NUNIT
00010 *     ..
00011 *
00012 *  Purpose
00013 *  =======
00014 *
00015 *  SERRSY tests the error exits for the REAL routines
00016 *  for symmetric indefinite matrices.
00017 *
00018 *  Note that this file is used only when the XBLAS are available,
00019 *  otherwise serrsy.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       REAL               ANRM, RCOND, BERR
00041 *     ..
00042 *     .. Local Arrays ..
00043       INTEGER            IP( NMAX ), IW( NMAX )
00044       REAL               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, SSPCON, SSPRFS, SSPTRF, SSPTRI,
00055      $                   SSPTRS, SSYCON, SSYRFS, SSYTF2, SSYTRF, SSYTRI,
00056      $                   SSYTRS, SSYRFSX
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          REAL
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. / REAL( I+J )
00081             AF( I, J ) = 1. / REAL( I+J )
00082    10    CONTINUE
00083          B( J ) = 0.
00084          R1( J ) = 0.
00085          R2( J ) = 0.
00086          W( J ) = 0.
00087          X( J ) = 0.
00088          S( J ) = 0.
00089          IP( J ) = J
00090          IW( J ) = J
00091    20 CONTINUE
00092       ANRM = 1.0
00093       RCOND = 1.0
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 *        SSYTRF
00102 *
00103          SRNAMT = 'SSYTRF'
00104          INFOT = 1
00105          CALL SSYTRF( '/', 0, A, 1, IP, W, 1, INFO )
00106          CALL CHKXER( 'SSYTRF', INFOT, NOUT, LERR, OK )
00107          INFOT = 2
00108          CALL SSYTRF( 'U', -1, A, 1, IP, W, 1, INFO )
00109          CALL CHKXER( 'SSYTRF', INFOT, NOUT, LERR, OK )
00110          INFOT = 4
00111          CALL SSYTRF( 'U', 2, A, 1, IP, W, 4, INFO )
00112          CALL CHKXER( 'SSYTRF', INFOT, NOUT, LERR, OK )
00113 *
00114 *        SSYTF2
00115 *
00116          SRNAMT = 'SSYTF2'
00117          INFOT = 1
00118          CALL SSYTF2( '/', 0, A, 1, IP, INFO )
00119          CALL CHKXER( 'SSYTF2', INFOT, NOUT, LERR, OK )
00120          INFOT = 2
00121          CALL SSYTF2( 'U', -1, A, 1, IP, INFO )
00122          CALL CHKXER( 'SSYTF2', INFOT, NOUT, LERR, OK )
00123          INFOT = 4
00124          CALL SSYTF2( 'U', 2, A, 1, IP, INFO )
00125          CALL CHKXER( 'SSYTF2', INFOT, NOUT, LERR, OK )
00126 *
00127 *        SSYTRI
00128 *
00129          SRNAMT = 'SSYTRI'
00130          INFOT = 1
00131          CALL SSYTRI( '/', 0, A, 1, IP, W, INFO )
00132          CALL CHKXER( 'SSYTRI', INFOT, NOUT, LERR, OK )
00133          INFOT = 2
00134          CALL SSYTRI( 'U', -1, A, 1, IP, W, INFO )
00135          CALL CHKXER( 'SSYTRI', INFOT, NOUT, LERR, OK )
00136          INFOT = 4
00137          CALL SSYTRI( 'U', 2, A, 1, IP, W, INFO )
00138          CALL CHKXER( 'SSYTRI', INFOT, NOUT, LERR, OK )
00139 *
00140 *        SSYTRS
00141 *
00142          SRNAMT = 'SSYTRS'
00143          INFOT = 1
00144          CALL SSYTRS( '/', 0, 0, A, 1, IP, B, 1, INFO )
00145          CALL CHKXER( 'SSYTRS', INFOT, NOUT, LERR, OK )
00146          INFOT = 2
00147          CALL SSYTRS( 'U', -1, 0, A, 1, IP, B, 1, INFO )
00148          CALL CHKXER( 'SSYTRS', INFOT, NOUT, LERR, OK )
00149          INFOT = 3
00150          CALL SSYTRS( 'U', 0, -1, A, 1, IP, B, 1, INFO )
00151          CALL CHKXER( 'SSYTRS', INFOT, NOUT, LERR, OK )
00152          INFOT = 5
00153          CALL SSYTRS( 'U', 2, 1, A, 1, IP, B, 2, INFO )
00154          CALL CHKXER( 'SSYTRS', INFOT, NOUT, LERR, OK )
00155          INFOT = 8
00156          CALL SSYTRS( 'U', 2, 1, A, 2, IP, B, 1, INFO )
00157          CALL CHKXER( 'SSYTRS', INFOT, NOUT, LERR, OK )
00158 *
00159 *        SSYRFS
00160 *
00161          SRNAMT = 'SSYRFS'
00162          INFOT = 1
00163          CALL SSYRFS( '/', 0, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2, W,
00164      $                IW, INFO )
00165          CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
00166          INFOT = 2
00167          CALL SSYRFS( 'U', -1, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
00168      $                W, IW, INFO )
00169          CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
00170          INFOT = 3
00171          CALL SSYRFS( 'U', 0, -1, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
00172      $                W, IW, INFO )
00173          CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
00174          INFOT = 5
00175          CALL SSYRFS( 'U', 2, 1, A, 1, AF, 2, IP, B, 2, X, 2, R1, R2, W,
00176      $                IW, INFO )
00177          CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
00178          INFOT = 7
00179          CALL SSYRFS( 'U', 2, 1, A, 2, AF, 1, IP, B, 2, X, 2, R1, R2, W,
00180      $                IW, INFO )
00181          CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
00182          INFOT = 10
00183          CALL SSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 1, X, 2, R1, R2, W,
00184      $                IW, INFO )
00185          CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
00186          INFOT = 12
00187          CALL SSYRFS( 'U', 2, 1, A, 2, AF, 2, IP, B, 2, X, 1, R1, R2, W,
00188      $                IW, INFO )
00189          CALL CHKXER( 'SSYRFS', INFOT, NOUT, LERR, OK )
00190 *
00191 *        SSYRFSX
00192 *
00193          N_ERR_BNDS = 3
00194          NPARAMS = 0
00195          SRNAMT = 'SSYRFSX'
00196          INFOT = 1
00197          CALL SSYRFSX( '/', EQ, 0, 0, A, 1, AF, 1, IP, S, B, 1, X, 1,
00198      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00199      $        PARAMS, W, IW, INFO )
00200          CALL CHKXER( 'SSYRFSX', INFOT, NOUT, LERR, OK )
00201          INFOT = 2
00202          CALL SSYRFSX( 'U', EQ, -1, 0, A, 1, AF, 1, IP, S, B, 1, X, 1,
00203      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00204      $        PARAMS, W, IW, INFO )
00205          CALL CHKXER( 'SSYRFSX', INFOT, NOUT, LERR, OK )
00206          EQ = 'N'
00207          INFOT = 3
00208          CALL SSYRFSX( 'U', EQ, -1, 0, A, 1, AF, 1, IP, S, B, 1, X, 1,
00209      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00210      $        PARAMS, W, IW, INFO )
00211          CALL CHKXER( 'SSYRFSX', INFOT, NOUT, LERR, OK )
00212          INFOT = 4
00213          CALL SSYRFSX( 'U', EQ, 0, -1, A, 1, AF, 1, IP, S, B, 1, X, 1,
00214      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00215      $        PARAMS, W, IW, INFO )
00216          CALL CHKXER( 'SSYRFSX', INFOT, NOUT, LERR, OK )
00217          INFOT = 6
00218          CALL SSYRFSX( 'U', EQ, 2, 1, A, 1, AF, 2, IP, S, B, 2, X, 2,
00219      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00220      $        PARAMS, W, IW, INFO )
00221          CALL CHKXER( 'SSYRFSX', INFOT, NOUT, LERR, OK )
00222          INFOT = 8
00223          CALL SSYRFSX( 'U', EQ, 2, 1, A, 2, AF, 1, IP, S, B, 2, X, 2,
00224      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00225      $        PARAMS, W, IW, INFO )
00226          CALL CHKXER( 'SSYRFSX', INFOT, NOUT, LERR, OK )
00227          INFOT = 11
00228          CALL SSYRFSX( 'U', EQ, 2, 1, A, 2, AF, 2, IP, S, B, 1, X, 2,
00229      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00230      $        PARAMS, W, IW, INFO )
00231          CALL CHKXER( 'SSYRFSX', INFOT, NOUT, LERR, OK )
00232          INFOT = 13
00233          CALL SSYRFSX( 'U', EQ, 2, 1, A, 2, AF, 2, IP, S, B, 2, X, 1,
00234      $        RCOND, BERR, N_ERR_BNDS, ERR_BNDS_N, ERR_BNDS_C, NPARAMS,
00235      $        PARAMS, W, IW, INFO )
00236          CALL CHKXER( 'SSYRFSX', INFOT, NOUT, LERR, OK )
00237 *
00238 *        SSYCON
00239 *
00240          SRNAMT = 'SSYCON'
00241          INFOT = 1
00242          CALL SSYCON( '/', 0, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00243          CALL CHKXER( 'SSYCON', INFOT, NOUT, LERR, OK )
00244          INFOT = 2
00245          CALL SSYCON( 'U', -1, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00246          CALL CHKXER( 'SSYCON', INFOT, NOUT, LERR, OK )
00247          INFOT = 4
00248          CALL SSYCON( 'U', 2, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00249          CALL CHKXER( 'SSYCON', INFOT, NOUT, LERR, OK )
00250          INFOT = 6
00251          CALL SSYCON( 'U', 1, A, 1, IP, -1.0, RCOND, W, IW, INFO )
00252          CALL CHKXER( 'SSYCON', 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 *        SSPTRF
00260 *
00261          SRNAMT = 'SSPTRF'
00262          INFOT = 1
00263          CALL SSPTRF( '/', 0, A, IP, INFO )
00264          CALL CHKXER( 'SSPTRF', INFOT, NOUT, LERR, OK )
00265          INFOT = 2
00266          CALL SSPTRF( 'U', -1, A, IP, INFO )
00267          CALL CHKXER( 'SSPTRF', INFOT, NOUT, LERR, OK )
00268 *
00269 *        SSPTRI
00270 *
00271          SRNAMT = 'SSPTRI'
00272          INFOT = 1
00273          CALL SSPTRI( '/', 0, A, IP, W, INFO )
00274          CALL CHKXER( 'SSPTRI', INFOT, NOUT, LERR, OK )
00275          INFOT = 2
00276          CALL SSPTRI( 'U', -1, A, IP, W, INFO )
00277          CALL CHKXER( 'SSPTRI', INFOT, NOUT, LERR, OK )
00278 *
00279 *        SSPTRS
00280 *
00281          SRNAMT = 'SSPTRS'
00282          INFOT = 1
00283          CALL SSPTRS( '/', 0, 0, A, IP, B, 1, INFO )
00284          CALL CHKXER( 'SSPTRS', INFOT, NOUT, LERR, OK )
00285          INFOT = 2
00286          CALL SSPTRS( 'U', -1, 0, A, IP, B, 1, INFO )
00287          CALL CHKXER( 'SSPTRS', INFOT, NOUT, LERR, OK )
00288          INFOT = 3
00289          CALL SSPTRS( 'U', 0, -1, A, IP, B, 1, INFO )
00290          CALL CHKXER( 'SSPTRS', INFOT, NOUT, LERR, OK )
00291          INFOT = 7
00292          CALL SSPTRS( 'U', 2, 1, A, IP, B, 1, INFO )
00293          CALL CHKXER( 'SSPTRS', INFOT, NOUT, LERR, OK )
00294 *
00295 *        SSPRFS
00296 *
00297          SRNAMT = 'SSPRFS'
00298          INFOT = 1
00299          CALL SSPRFS( '/', 0, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00300      $                INFO )
00301          CALL CHKXER( 'SSPRFS', INFOT, NOUT, LERR, OK )
00302          INFOT = 2
00303          CALL SSPRFS( 'U', -1, 0, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00304      $                INFO )
00305          CALL CHKXER( 'SSPRFS', INFOT, NOUT, LERR, OK )
00306          INFOT = 3
00307          CALL SSPRFS( 'U', 0, -1, A, AF, IP, B, 1, X, 1, R1, R2, W, IW,
00308      $                INFO )
00309          CALL CHKXER( 'SSPRFS', INFOT, NOUT, LERR, OK )
00310          INFOT = 8
00311          CALL SSPRFS( 'U', 2, 1, A, AF, IP, B, 1, X, 2, R1, R2, W, IW,
00312      $                INFO )
00313          CALL CHKXER( 'SSPRFS', INFOT, NOUT, LERR, OK )
00314          INFOT = 10
00315          CALL SSPRFS( 'U', 2, 1, A, AF, IP, B, 2, X, 1, R1, R2, W, IW,
00316      $                INFO )
00317          CALL CHKXER( 'SSPRFS', INFOT, NOUT, LERR, OK )
00318 *
00319 *        SSPCON
00320 *
00321          SRNAMT = 'SSPCON'
00322          INFOT = 1
00323          CALL SSPCON( '/', 0, A, IP, ANRM, RCOND, W, IW, INFO )
00324          CALL CHKXER( 'SSPCON', INFOT, NOUT, LERR, OK )
00325          INFOT = 2
00326          CALL SSPCON( 'U', -1, A, IP, ANRM, RCOND, W, IW, INFO )
00327          CALL CHKXER( 'SSPCON', INFOT, NOUT, LERR, OK )
00328          INFOT = 5
00329          CALL SSPCON( 'U', 1, A, IP, -1.0, RCOND, W, IW, INFO )
00330          CALL CHKXER( 'SSPCON', 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 SERRSY
00340 *
00341       END