LAPACK: TESTING/LIN/serrge.f Source File

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00001       SUBROUTINE SERRGE( PATH, NUNIT )
00002 *
00003 *  -- LAPACK test routine (version 3.1) --
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 *  SERRGE tests the error exits for the REAL routines
00016 *  for general matrices.
00017 *
00018 *  Arguments
00019 *  =========
00020 *
00021 *  PATH    (input) CHARACTER*3
00022 *          The LAPACK path name for the routines to be tested.
00023 *
00024 *  NUNIT   (input) INTEGER
00025 *          The unit number for output.
00026 *
00027 *  =====================================================================
00028 *
00029 *     .. Parameters ..
00030       INTEGER            NMAX, LW
00031       PARAMETER          ( NMAX = 4, LW = 3*NMAX )
00032 *     ..
00033 *     .. Local Scalars ..
00034       CHARACTER*2        C2
00035       INTEGER            I, INFO, J
00036       REAL               ANRM, CCOND, RCOND
00037 *     ..
00038 *     .. Local Arrays ..
00039       INTEGER            IP( NMAX ), IW( NMAX )
00040       REAL               A( NMAX, NMAX ), AF( NMAX, NMAX ), B( NMAX ),
00041      $                   R1( NMAX ), R2( NMAX ), W( LW ), X( NMAX )
00042 *     ..
00043 *     .. External Functions ..
00044       LOGICAL            LSAMEN
00045       EXTERNAL           LSAMEN
00046 *     ..
00047 *     .. External Subroutines ..
00048       EXTERNAL           ALAESM, CHKXER, SGBCON, SGBEQU, SGBRFS, SGBTF2,
00049      $                   SGBTRF, SGBTRS, SGECON, SGEEQU, SGERFS, SGETF2,
00050      $                   SGETRF, SGETRI, SGETRS
00051 *     ..
00052 *     .. Scalars in Common ..
00053       LOGICAL            LERR, OK
00054       CHARACTER*32       SRNAMT
00055       INTEGER            INFOT, NOUT
00056 *     ..
00057 *     .. Common blocks ..
00058       COMMON             / INFOC / INFOT, NOUT, OK, LERR
00059       COMMON             / SRNAMC / SRNAMT
00060 *     ..
00061 *     .. Intrinsic Functions ..
00062       INTRINSIC          REAL
00063 *     ..
00064 *     .. Executable Statements ..
00065 *
00066       NOUT = NUNIT
00067       WRITE( NOUT, FMT = * )
00068       C2 = PATH( 2: 3 )
00069 *
00070 *     Set the variables to innocuous values.
00071 *
00072       DO 20 J = 1, NMAX
00073          DO 10 I = 1, NMAX
00074             A( I, J ) = 1. / REAL( I+J )
00075             AF( I, J ) = 1. / REAL( I+J )
00076    10    CONTINUE
00077          B( J ) = 0.
00078          R1( J ) = 0.
00079          R2( J ) = 0.
00080          W( J ) = 0.
00081          X( J ) = 0.
00082          IP( J ) = J
00083          IW( J ) = J
00084    20 CONTINUE
00085       OK = .TRUE.
00086 *
00087       IF( LSAMEN( 2, C2, 'GE' ) ) THEN
00088 *
00089 *        Test error exits of the routines that use the LU decomposition
00090 *        of a general matrix.
00091 *
00092 *        SGETRF
00093 *
00094          SRNAMT = 'SGETRF'
00095          INFOT = 1
00096          CALL SGETRF( -1, 0, A, 1, IP, INFO )
00097          CALL CHKXER( 'SGETRF', INFOT, NOUT, LERR, OK )
00098          INFOT = 2
00099          CALL SGETRF( 0, -1, A, 1, IP, INFO )
00100          CALL CHKXER( 'SGETRF', INFOT, NOUT, LERR, OK )
00101          INFOT = 4
00102          CALL SGETRF( 2, 1, A, 1, IP, INFO )
00103          CALL CHKXER( 'SGETRF', INFOT, NOUT, LERR, OK )
00104 *
00105 *        SGETF2
00106 *
00107          SRNAMT = 'SGETF2'
00108          INFOT = 1
00109          CALL SGETF2( -1, 0, A, 1, IP, INFO )
00110          CALL CHKXER( 'SGETF2', INFOT, NOUT, LERR, OK )
00111          INFOT = 2
00112          CALL SGETF2( 0, -1, A, 1, IP, INFO )
00113          CALL CHKXER( 'SGETF2', INFOT, NOUT, LERR, OK )
00114          INFOT = 4
00115          CALL SGETF2( 2, 1, A, 1, IP, INFO )
00116          CALL CHKXER( 'SGETF2', INFOT, NOUT, LERR, OK )
00117 *
00118 *        SGETRI
00119 *
00120          SRNAMT = 'SGETRI'
00121          INFOT = 1
00122          CALL SGETRI( -1, A, 1, IP, W, LW, INFO )
00123          CALL CHKXER( 'SGETRI', INFOT, NOUT, LERR, OK )
00124          INFOT = 3
00125          CALL SGETRI( 2, A, 1, IP, W, LW, INFO )
00126          CALL CHKXER( 'SGETRI', INFOT, NOUT, LERR, OK )
00127 *
00128 *        SGETRS
00129 *
00130          SRNAMT = 'SGETRS'
00131          INFOT = 1
00132          CALL SGETRS( '/', 0, 0, A, 1, IP, B, 1, INFO )
00133          CALL CHKXER( 'SGETRS', INFOT, NOUT, LERR, OK )
00134          INFOT = 2
00135          CALL SGETRS( 'N', -1, 0, A, 1, IP, B, 1, INFO )
00136          CALL CHKXER( 'SGETRS', INFOT, NOUT, LERR, OK )
00137          INFOT = 3
00138          CALL SGETRS( 'N', 0, -1, A, 1, IP, B, 1, INFO )
00139          CALL CHKXER( 'SGETRS', INFOT, NOUT, LERR, OK )
00140          INFOT = 5
00141          CALL SGETRS( 'N', 2, 1, A, 1, IP, B, 2, INFO )
00142          CALL CHKXER( 'SGETRS', INFOT, NOUT, LERR, OK )
00143          INFOT = 8
00144          CALL SGETRS( 'N', 2, 1, A, 2, IP, B, 1, INFO )
00145          CALL CHKXER( 'SGETRS', INFOT, NOUT, LERR, OK )
00146 *
00147 *        SGERFS
00148 *
00149          SRNAMT = 'SGERFS'
00150          INFOT = 1
00151          CALL SGERFS( '/', 0, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2, W,
00152      $                IW, INFO )
00153          CALL CHKXER( 'SGERFS', INFOT, NOUT, LERR, OK )
00154          INFOT = 2
00155          CALL SGERFS( 'N', -1, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
00156      $                W, IW, INFO )
00157          CALL CHKXER( 'SGERFS', INFOT, NOUT, LERR, OK )
00158          INFOT = 3
00159          CALL SGERFS( 'N', 0, -1, A, 1, AF, 1, IP, B, 1, X, 1, R1, R2,
00160      $                W, IW, INFO )
00161          CALL CHKXER( 'SGERFS', INFOT, NOUT, LERR, OK )
00162          INFOT = 5
00163          CALL SGERFS( 'N', 2, 1, A, 1, AF, 2, IP, B, 2, X, 2, R1, R2, W,
00164      $                IW, INFO )
00165          CALL CHKXER( 'SGERFS', INFOT, NOUT, LERR, OK )
00166          INFOT = 7
00167          CALL SGERFS( 'N', 2, 1, A, 2, AF, 1, IP, B, 2, X, 2, R1, R2, W,
00168      $                IW, INFO )
00169          CALL CHKXER( 'SGERFS', INFOT, NOUT, LERR, OK )
00170          INFOT = 10
00171          CALL SGERFS( 'N', 2, 1, A, 2, AF, 2, IP, B, 1, X, 2, R1, R2, W,
00172      $                IW, INFO )
00173          CALL CHKXER( 'SGERFS', INFOT, NOUT, LERR, OK )
00174          INFOT = 12
00175          CALL SGERFS( 'N', 2, 1, A, 2, AF, 2, IP, B, 2, X, 1, R1, R2, W,
00176      $                IW, INFO )
00177          CALL CHKXER( 'SGERFS', INFOT, NOUT, LERR, OK )
00178 *
00179 *        SGECON
00180 *
00181          SRNAMT = 'SGECON'
00182          INFOT = 1
00183          CALL SGECON( '/', 0, A, 1, ANRM, RCOND, W, IW, INFO )
00184          CALL CHKXER( 'SGECON', INFOT, NOUT, LERR, OK )
00185          INFOT = 2
00186          CALL SGECON( '1', -1, A, 1, ANRM, RCOND, W, IW, INFO )
00187          CALL CHKXER( 'SGECON', INFOT, NOUT, LERR, OK )
00188          INFOT = 4
00189          CALL SGECON( '1', 2, A, 1, ANRM, RCOND, W, IW, INFO )
00190          CALL CHKXER( 'SGECON', INFOT, NOUT, LERR, OK )
00191 *
00192 *        SGEEQU
00193 *
00194          SRNAMT = 'SGEEQU'
00195          INFOT = 1
00196          CALL SGEEQU( -1, 0, A, 1, R1, R2, RCOND, CCOND, ANRM, INFO )
00197          CALL CHKXER( 'SGEEQU', INFOT, NOUT, LERR, OK )
00198          INFOT = 2
00199          CALL SGEEQU( 0, -1, A, 1, R1, R2, RCOND, CCOND, ANRM, INFO )
00200          CALL CHKXER( 'SGEEQU', INFOT, NOUT, LERR, OK )
00201          INFOT = 4
00202          CALL SGEEQU( 2, 2, A, 1, R1, R2, RCOND, CCOND, ANRM, INFO )
00203          CALL CHKXER( 'SGEEQU', INFOT, NOUT, LERR, OK )
00204 *
00205       ELSE IF( LSAMEN( 2, C2, 'GB' ) ) THEN
00206 *
00207 *        Test error exits of the routines that use the LU decomposition
00208 *        of a general band matrix.
00209 *
00210 *        SGBTRF
00211 *
00212          SRNAMT = 'SGBTRF'
00213          INFOT = 1
00214          CALL SGBTRF( -1, 0, 0, 0, A, 1, IP, INFO )
00215          CALL CHKXER( 'SGBTRF', INFOT, NOUT, LERR, OK )
00216          INFOT = 2
00217          CALL SGBTRF( 0, -1, 0, 0, A, 1, IP, INFO )
00218          CALL CHKXER( 'SGBTRF', INFOT, NOUT, LERR, OK )
00219          INFOT = 3
00220          CALL SGBTRF( 1, 1, -1, 0, A, 1, IP, INFO )
00221          CALL CHKXER( 'SGBTRF', INFOT, NOUT, LERR, OK )
00222          INFOT = 4
00223          CALL SGBTRF( 1, 1, 0, -1, A, 1, IP, INFO )
00224          CALL CHKXER( 'SGBTRF', INFOT, NOUT, LERR, OK )
00225          INFOT = 6
00226          CALL SGBTRF( 2, 2, 1, 1, A, 3, IP, INFO )
00227          CALL CHKXER( 'SGBTRF', INFOT, NOUT, LERR, OK )
00228 *
00229 *        SGBTF2
00230 *
00231          SRNAMT = 'SGBTF2'
00232          INFOT = 1
00233          CALL SGBTF2( -1, 0, 0, 0, A, 1, IP, INFO )
00234          CALL CHKXER( 'SGBTF2', INFOT, NOUT, LERR, OK )
00235          INFOT = 2
00236          CALL SGBTF2( 0, -1, 0, 0, A, 1, IP, INFO )
00237          CALL CHKXER( 'SGBTF2', INFOT, NOUT, LERR, OK )
00238          INFOT = 3
00239          CALL SGBTF2( 1, 1, -1, 0, A, 1, IP, INFO )
00240          CALL CHKXER( 'SGBTF2', INFOT, NOUT, LERR, OK )
00241          INFOT = 4
00242          CALL SGBTF2( 1, 1, 0, -1, A, 1, IP, INFO )
00243          CALL CHKXER( 'SGBTF2', INFOT, NOUT, LERR, OK )
00244          INFOT = 6
00245          CALL SGBTF2( 2, 2, 1, 1, A, 3, IP, INFO )
00246          CALL CHKXER( 'SGBTF2', INFOT, NOUT, LERR, OK )
00247 *
00248 *        SGBTRS
00249 *
00250          SRNAMT = 'SGBTRS'
00251          INFOT = 1
00252          CALL SGBTRS( '/', 0, 0, 0, 1, A, 1, IP, B, 1, INFO )
00253          CALL CHKXER( 'SGBTRS', INFOT, NOUT, LERR, OK )
00254          INFOT = 2
00255          CALL SGBTRS( 'N', -1, 0, 0, 1, A, 1, IP, B, 1, INFO )
00256          CALL CHKXER( 'SGBTRS', INFOT, NOUT, LERR, OK )
00257          INFOT = 3
00258          CALL SGBTRS( 'N', 1, -1, 0, 1, A, 1, IP, B, 1, INFO )
00259          CALL CHKXER( 'SGBTRS', INFOT, NOUT, LERR, OK )
00260          INFOT = 4
00261          CALL SGBTRS( 'N', 1, 0, -1, 1, A, 1, IP, B, 1, INFO )
00262          CALL CHKXER( 'SGBTRS', INFOT, NOUT, LERR, OK )
00263          INFOT = 5
00264          CALL SGBTRS( 'N', 1, 0, 0, -1, A, 1, IP, B, 1, INFO )
00265          CALL CHKXER( 'SGBTRS', INFOT, NOUT, LERR, OK )
00266          INFOT = 7
00267          CALL SGBTRS( 'N', 2, 1, 1, 1, A, 3, IP, B, 2, INFO )
00268          CALL CHKXER( 'SGBTRS', INFOT, NOUT, LERR, OK )
00269          INFOT = 10
00270          CALL SGBTRS( 'N', 2, 0, 0, 1, A, 1, IP, B, 1, INFO )
00271          CALL CHKXER( 'SGBTRS', INFOT, NOUT, LERR, OK )
00272 *
00273 *        SGBRFS
00274 *
00275          SRNAMT = 'SGBRFS'
00276          INFOT = 1
00277          CALL SGBRFS( '/', 0, 0, 0, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1,
00278      $                R2, W, IW, INFO )
00279          CALL CHKXER( 'SGBRFS', INFOT, NOUT, LERR, OK )
00280          INFOT = 2
00281          CALL SGBRFS( 'N', -1, 0, 0, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1,
00282      $                R2, W, IW, INFO )
00283          CALL CHKXER( 'SGBRFS', INFOT, NOUT, LERR, OK )
00284          INFOT = 3
00285          CALL SGBRFS( 'N', 1, -1, 0, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1,
00286      $                R2, W, IW, INFO )
00287          CALL CHKXER( 'SGBRFS', INFOT, NOUT, LERR, OK )
00288          INFOT = 4
00289          CALL SGBRFS( 'N', 1, 0, -1, 0, A, 1, AF, 1, IP, B, 1, X, 1, R1,
00290      $                R2, W, IW, INFO )
00291          CALL CHKXER( 'SGBRFS', INFOT, NOUT, LERR, OK )
00292          INFOT = 5
00293          CALL SGBRFS( 'N', 1, 0, 0, -1, A, 1, AF, 1, IP, B, 1, X, 1, R1,
00294      $                R2, W, IW, INFO )
00295          CALL CHKXER( 'SGBRFS', INFOT, NOUT, LERR, OK )
00296          INFOT = 7
00297          CALL SGBRFS( 'N', 2, 1, 1, 1, A, 2, AF, 4, IP, B, 2, X, 2, R1,
00298      $                R2, W, IW, INFO )
00299          CALL CHKXER( 'SGBRFS', INFOT, NOUT, LERR, OK )
00300          INFOT = 9
00301          CALL SGBRFS( 'N', 2, 1, 1, 1, A, 3, AF, 3, IP, B, 2, X, 2, R1,
00302      $                R2, W, IW, INFO )
00303          CALL CHKXER( 'SGBRFS', INFOT, NOUT, LERR, OK )
00304          INFOT = 12
00305          CALL SGBRFS( 'N', 2, 0, 0, 1, A, 1, AF, 1, IP, B, 1, X, 2, R1,
00306      $                R2, W, IW, INFO )
00307          CALL CHKXER( 'SGBRFS', INFOT, NOUT, LERR, OK )
00308          INFOT = 14
00309          CALL SGBRFS( 'N', 2, 0, 0, 1, A, 1, AF, 1, IP, B, 2, X, 1, R1,
00310      $                R2, W, IW, INFO )
00311          CALL CHKXER( 'SGBRFS', INFOT, NOUT, LERR, OK )
00312 *
00313 *        SGBCON
00314 *
00315          SRNAMT = 'SGBCON'
00316          INFOT = 1
00317          CALL SGBCON( '/', 0, 0, 0, A, 1, IP, ANRM, RCOND, W, IW, INFO )
00318          CALL CHKXER( 'SGBCON', INFOT, NOUT, LERR, OK )
00319          INFOT = 2
00320          CALL SGBCON( '1', -1, 0, 0, A, 1, IP, ANRM, RCOND, W, IW,
00321      $                INFO )
00322          CALL CHKXER( 'SGBCON', INFOT, NOUT, LERR, OK )
00323          INFOT = 3
00324          CALL SGBCON( '1', 1, -1, 0, A, 1, IP, ANRM, RCOND, W, IW,
00325      $                INFO )
00326          CALL CHKXER( 'SGBCON', INFOT, NOUT, LERR, OK )
00327          INFOT = 4
00328          CALL SGBCON( '1', 1, 0, -1, A, 1, IP, ANRM, RCOND, W, IW,
00329      $                INFO )
00330          CALL CHKXER( 'SGBCON', INFOT, NOUT, LERR, OK )
00331          INFOT = 6
00332          CALL SGBCON( '1', 2, 1, 1, A, 3, IP, ANRM, RCOND, W, IW, INFO )
00333          CALL CHKXER( 'SGBCON', INFOT, NOUT, LERR, OK )
00334 *
00335 *        SGBEQU
00336 *
00337          SRNAMT = 'SGBEQU'
00338          INFOT = 1
00339          CALL SGBEQU( -1, 0, 0, 0, A, 1, R1, R2, RCOND, CCOND, ANRM,
00340      $                INFO )
00341          CALL CHKXER( 'SGBEQU', INFOT, NOUT, LERR, OK )
00342          INFOT = 2
00343          CALL SGBEQU( 0, -1, 0, 0, A, 1, R1, R2, RCOND, CCOND, ANRM,
00344      $                INFO )
00345          CALL CHKXER( 'SGBEQU', INFOT, NOUT, LERR, OK )
00346          INFOT = 3
00347          CALL SGBEQU( 1, 1, -1, 0, A, 1, R1, R2, RCOND, CCOND, ANRM,
00348      $                INFO )
00349          CALL CHKXER( 'SGBEQU', INFOT, NOUT, LERR, OK )
00350          INFOT = 4
00351          CALL SGBEQU( 1, 1, 0, -1, A, 1, R1, R2, RCOND, CCOND, ANRM,
00352      $                INFO )
00353          CALL CHKXER( 'SGBEQU', INFOT, NOUT, LERR, OK )
00354          INFOT = 6
00355          CALL SGBEQU( 2, 2, 1, 1, A, 2, R1, R2, RCOND, CCOND, ANRM,
00356      $                INFO )
00357          CALL CHKXER( 'SGBEQU', INFOT, NOUT, LERR, OK )
00358       END IF
00359 *
00360 *     Print a summary line.
00361 *
00362       CALL ALAESM( PATH, OK, NOUT )
00363 *
00364       RETURN
00365 *
00366 *     End of SERRGE
00367 *
00368       END