LAPACK: TESTING/LIN/derrls.f Source File

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00001       SUBROUTINE DERRLS( 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 *  DERRLS tests the error exits for the DOUBLE PRECISION least squares
00016 *  driver routines (DGELS, SGELSS, SGELSX, SGELSY, SGELSD).
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
00031       PARAMETER          ( NMAX = 2 )
00032 *     ..
00033 *     .. Local Scalars ..
00034       CHARACTER*2        C2
00035       INTEGER            INFO, IRNK
00036       DOUBLE PRECISION   RCOND
00037 *     ..
00038 *     .. Local Arrays ..
00039       INTEGER            IP( NMAX )
00040       DOUBLE PRECISION   A( NMAX, NMAX ), B( NMAX, NMAX ), S( NMAX ),
00041      $                   W( NMAX )
00042 *     ..
00043 *     .. External Functions ..
00044       LOGICAL            LSAMEN
00045       EXTERNAL           LSAMEN
00046 *     ..
00047 *     .. External Subroutines ..
00048       EXTERNAL           ALAESM, CHKXER, DGELS, DGELSD, DGELSS, DGELSX,
00049      $                   DGELSY
00050 *     ..
00051 *     .. Scalars in Common ..
00052       LOGICAL            LERR, OK
00053       CHARACTER*32       SRNAMT
00054       INTEGER            INFOT, NOUT
00055 *     ..
00056 *     .. Common blocks ..
00057       COMMON             / INFOC / INFOT, NOUT, OK, LERR
00058       COMMON             / SRNAMC / SRNAMT
00059 *     ..
00060 *     .. Executable Statements ..
00061 *
00062       NOUT = NUNIT
00063       WRITE( NOUT, FMT = * )
00064       C2 = PATH( 2: 3 )
00065       A( 1, 1 ) = 1.0D+0
00066       A( 1, 2 ) = 2.0D+0
00067       A( 2, 2 ) = 3.0D+0
00068       A( 2, 1 ) = 4.0D+0
00069       OK = .TRUE.
00070 *
00071       IF( LSAMEN( 2, C2, 'LS' ) ) THEN
00072 *
00073 *        Test error exits for the least squares driver routines.
00074 *
00075 *        DGELS
00076 *
00077          SRNAMT = 'DGELS '
00078          INFOT = 1
00079          CALL DGELS( '/', 0, 0, 0, A, 1, B, 1, W, 1, INFO )
00080          CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
00081          INFOT = 2
00082          CALL DGELS( 'N', -1, 0, 0, A, 1, B, 1, W, 1, INFO )
00083          CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
00084          INFOT = 3
00085          CALL DGELS( 'N', 0, -1, 0, A, 1, B, 1, W, 1, INFO )
00086          CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
00087          INFOT = 4
00088          CALL DGELS( 'N', 0, 0, -1, A, 1, B, 1, W, 1, INFO )
00089          CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
00090          INFOT = 6
00091          CALL DGELS( 'N', 2, 0, 0, A, 1, B, 2, W, 2, INFO )
00092          CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
00093          INFOT = 8
00094          CALL DGELS( 'N', 2, 0, 0, A, 2, B, 1, W, 2, INFO )
00095          CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
00096          INFOT = 10
00097          CALL DGELS( 'N', 1, 1, 0, A, 1, B, 1, W, 1, INFO )
00098          CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
00099 *
00100 *        DGELSS
00101 *
00102          SRNAMT = 'DGELSS'
00103          INFOT = 1
00104          CALL DGELSS( -1, 0, 0, A, 1, B, 1, S, RCOND, IRNK, W, 1, INFO )
00105          CALL CHKXER( 'DGELSS', INFOT, NOUT, LERR, OK )
00106          INFOT = 2
00107          CALL DGELSS( 0, -1, 0, A, 1, B, 1, S, RCOND, IRNK, W, 1, INFO )
00108          CALL CHKXER( 'DGELSS', INFOT, NOUT, LERR, OK )
00109          INFOT = 3
00110          CALL DGELSS( 0, 0, -1, A, 1, B, 1, S, RCOND, IRNK, W, 1, INFO )
00111          CALL CHKXER( 'DGELSS', INFOT, NOUT, LERR, OK )
00112          INFOT = 5
00113          CALL DGELSS( 2, 0, 0, A, 1, B, 2, S, RCOND, IRNK, W, 2, INFO )
00114          CALL CHKXER( 'DGELSS', INFOT, NOUT, LERR, OK )
00115          INFOT = 7
00116          CALL DGELSS( 2, 0, 0, A, 2, B, 1, S, RCOND, IRNK, W, 2, INFO )
00117          CALL CHKXER( 'DGELSS', INFOT, NOUT, LERR, OK )
00118 *
00119 *        DGELSX
00120 *
00121          SRNAMT = 'DGELSX'
00122          INFOT = 1
00123          CALL DGELSX( -1, 0, 0, A, 1, B, 1, IP, RCOND, IRNK, W, INFO )
00124          CALL CHKXER( 'DGELSX', INFOT, NOUT, LERR, OK )
00125          INFOT = 2
00126          CALL DGELSX( 0, -1, 0, A, 1, B, 1, IP, RCOND, IRNK, W, INFO )
00127          CALL CHKXER( 'DGELSX', INFOT, NOUT, LERR, OK )
00128          INFOT = 3
00129          CALL DGELSX( 0, 0, -1, A, 1, B, 1, IP, RCOND, IRNK, W, INFO )
00130          CALL CHKXER( 'DGELSX', INFOT, NOUT, LERR, OK )
00131          INFOT = 5
00132          CALL DGELSX( 2, 0, 0, A, 1, B, 2, IP, RCOND, IRNK, W, INFO )
00133          CALL CHKXER( 'DGELSX', INFOT, NOUT, LERR, OK )
00134          INFOT = 7
00135          CALL DGELSX( 2, 0, 0, A, 2, B, 1, IP, RCOND, IRNK, W, INFO )
00136          CALL CHKXER( 'DGELSX', INFOT, NOUT, LERR, OK )
00137 *
00138 *        DGELSY
00139 *
00140          SRNAMT = 'DGELSY'
00141          INFOT = 1
00142          CALL DGELSY( -1, 0, 0, A, 1, B, 1, IP, RCOND, IRNK, W, 10,
00143      $                INFO )
00144          CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
00145          INFOT = 2
00146          CALL DGELSY( 0, -1, 0, A, 1, B, 1, IP, RCOND, IRNK, W, 10,
00147      $                INFO )
00148          CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
00149          INFOT = 3
00150          CALL DGELSY( 0, 0, -1, A, 1, B, 1, IP, RCOND, IRNK, W, 10,
00151      $                INFO )
00152          CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
00153          INFOT = 5
00154          CALL DGELSY( 2, 0, 0, A, 1, B, 2, IP, RCOND, IRNK, W, 10,
00155      $                INFO )
00156          CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
00157          INFOT = 7
00158          CALL DGELSY( 2, 0, 0, A, 2, B, 1, IP, RCOND, IRNK, W, 10,
00159      $                INFO )
00160          CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
00161          INFOT = 12
00162          CALL DGELSY( 2, 2, 1, A, 2, B, 2, IP, RCOND, IRNK, W, 1, INFO )
00163          CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
00164 *
00165 *        DGELSD
00166 *
00167          SRNAMT = 'DGELSD'
00168          INFOT = 1
00169          CALL DGELSD( -1, 0, 0, A, 1, B, 1, S, RCOND, IRNK, W, 10, IP,
00170      $                INFO )
00171          CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
00172          INFOT = 2
00173          CALL DGELSD( 0, -1, 0, A, 1, B, 1, S, RCOND, IRNK, W, 10, IP,
00174      $                INFO )
00175          CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
00176          INFOT = 3
00177          CALL DGELSD( 0, 0, -1, A, 1, B, 1, S, RCOND, IRNK, W, 10, IP,
00178      $                INFO )
00179          CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
00180          INFOT = 5
00181          CALL DGELSD( 2, 0, 0, A, 1, B, 2, S, RCOND, IRNK, W, 10, IP,
00182      $                INFO )
00183          CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
00184          INFOT = 7
00185          CALL DGELSD( 2, 0, 0, A, 2, B, 1, S, RCOND, IRNK, W, 10, IP,
00186      $                INFO )
00187          CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
00188          INFOT = 12
00189          CALL DGELSD( 2, 2, 1, A, 2, B, 2, S, RCOND, IRNK, W, 1, IP,
00190      $                INFO )
00191          CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
00192       END IF
00193 *
00194 *     Print a summary line.
00195 *
00196       CALL ALAESM( PATH, OK, NOUT )
00197 *
00198       RETURN
00199 *
00200 *     End of DERRLS
00201 *
00202       END