LAPACK  3.4.1
LAPACK: Linear Algebra PACKage
derrgt.f
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00001 *> \brief \b DERRGT
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 DERRGT( 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 *> DERRGT tests the error exits for the DOUBLE PRECISION tridiagonal
00025 *> routines.
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 November 2011
00052 *
00053 *> \ingroup double_lin
00054 *
00055 *  =====================================================================
00056       SUBROUTINE DERRGT( PATH, NUNIT )
00057 *
00058 *  -- LAPACK test routine (version 3.4.0) --
00059 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
00060 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
00061 *     November 2011
00062 *
00063 *     .. Scalar Arguments ..
00064       CHARACTER*3        PATH
00065       INTEGER            NUNIT
00066 *     ..
00067 *
00068 *  =====================================================================
00069 *
00070 *     .. Parameters ..
00071       INTEGER            NMAX
00072       PARAMETER          ( NMAX = 2 )
00073 *     ..
00074 *     .. Local Scalars ..
00075       CHARACTER*2        C2
00076       INTEGER            INFO
00077       DOUBLE PRECISION   ANORM, RCOND
00078 *     ..
00079 *     .. Local Arrays ..
00080       INTEGER            IP( NMAX ), IW( NMAX )
00081       DOUBLE PRECISION   B( NMAX ), C( NMAX ), CF( NMAX ), D( NMAX ),
00082      $                   DF( NMAX ), E( NMAX ), EF( NMAX ), F( NMAX ),
00083      $                   R1( NMAX ), R2( NMAX ), W( NMAX ), X( NMAX )
00084 *     ..
00085 *     .. External Functions ..
00086       LOGICAL            LSAMEN
00087       EXTERNAL           LSAMEN
00088 *     ..
00089 *     .. External Subroutines ..
00090       EXTERNAL           ALAESM, CHKXER, DGTCON, DGTRFS, DGTTRF, DGTTRS,
00091      $                   DPTCON, DPTRFS, DPTTRF, DPTTRS
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 *     .. Executable Statements ..
00103 *
00104       NOUT = NUNIT
00105       WRITE( NOUT, FMT = * )
00106       C2 = PATH( 2: 3 )
00107       D( 1 ) = 1.D0
00108       D( 2 ) = 2.D0
00109       DF( 1 ) = 1.D0
00110       DF( 2 ) = 2.D0
00111       E( 1 ) = 3.D0
00112       E( 2 ) = 4.D0
00113       EF( 1 ) = 3.D0
00114       EF( 2 ) = 4.D0
00115       ANORM = 1.0D0
00116       OK = .TRUE.
00117 *
00118       IF( LSAMEN( 2, C2, 'GT' ) ) THEN
00119 *
00120 *        Test error exits for the general tridiagonal routines.
00121 *
00122 *        DGTTRF
00123 *
00124          SRNAMT = 'DGTTRF'
00125          INFOT = 1
00126          CALL DGTTRF( -1, C, D, E, F, IP, INFO )
00127          CALL CHKXER( 'DGTTRF', INFOT, NOUT, LERR, OK )
00128 *
00129 *        DGTTRS
00130 *
00131          SRNAMT = 'DGTTRS'
00132          INFOT = 1
00133          CALL DGTTRS( '/', 0, 0, C, D, E, F, IP, X, 1, INFO )
00134          CALL CHKXER( 'DGTTRS', INFOT, NOUT, LERR, OK )
00135          INFOT = 2
00136          CALL DGTTRS( 'N', -1, 0, C, D, E, F, IP, X, 1, INFO )
00137          CALL CHKXER( 'DGTTRS', INFOT, NOUT, LERR, OK )
00138          INFOT = 3
00139          CALL DGTTRS( 'N', 0, -1, C, D, E, F, IP, X, 1, INFO )
00140          CALL CHKXER( 'DGTTRS', INFOT, NOUT, LERR, OK )
00141          INFOT = 10
00142          CALL DGTTRS( 'N', 2, 1, C, D, E, F, IP, X, 1, INFO )
00143          CALL CHKXER( 'DGTTRS', INFOT, NOUT, LERR, OK )
00144 *
00145 *        DGTRFS
00146 *
00147          SRNAMT = 'DGTRFS'
00148          INFOT = 1
00149          CALL DGTRFS( '/', 0, 0, C, D, E, CF, DF, EF, F, IP, B, 1, X, 1,
00150      $                R1, R2, W, IW, INFO )
00151          CALL CHKXER( 'DGTRFS', INFOT, NOUT, LERR, OK )
00152          INFOT = 2
00153          CALL DGTRFS( 'N', -1, 0, C, D, E, CF, DF, EF, F, IP, B, 1, X,
00154      $                1, R1, R2, W, IW, INFO )
00155          CALL CHKXER( 'DGTRFS', INFOT, NOUT, LERR, OK )
00156          INFOT = 3
00157          CALL DGTRFS( 'N', 0, -1, C, D, E, CF, DF, EF, F, IP, B, 1, X,
00158      $                1, R1, R2, W, IW, INFO )
00159          CALL CHKXER( 'DGTRFS', INFOT, NOUT, LERR, OK )
00160          INFOT = 13
00161          CALL DGTRFS( 'N', 2, 1, C, D, E, CF, DF, EF, F, IP, B, 1, X, 2,
00162      $                R1, R2, W, IW, INFO )
00163          CALL CHKXER( 'DGTRFS', INFOT, NOUT, LERR, OK )
00164          INFOT = 15
00165          CALL DGTRFS( 'N', 2, 1, C, D, E, CF, DF, EF, F, IP, B, 2, X, 1,
00166      $                R1, R2, W, IW, INFO )
00167          CALL CHKXER( 'DGTRFS', INFOT, NOUT, LERR, OK )
00168 *
00169 *        DGTCON
00170 *
00171          SRNAMT = 'DGTCON'
00172          INFOT = 1
00173          CALL DGTCON( '/', 0, C, D, E, F, IP, ANORM, RCOND, W, IW,
00174      $                INFO )
00175          CALL CHKXER( 'DGTCON', INFOT, NOUT, LERR, OK )
00176          INFOT = 2
00177          CALL DGTCON( 'I', -1, C, D, E, F, IP, ANORM, RCOND, W, IW,
00178      $                INFO )
00179          CALL CHKXER( 'DGTCON', INFOT, NOUT, LERR, OK )
00180          INFOT = 8
00181          CALL DGTCON( 'I', 0, C, D, E, F, IP, -ANORM, RCOND, W, IW,
00182      $                INFO )
00183          CALL CHKXER( 'DGTCON', INFOT, NOUT, LERR, OK )
00184 *
00185       ELSE IF( LSAMEN( 2, C2, 'PT' ) ) THEN
00186 *
00187 *        Test error exits for the positive definite tridiagonal
00188 *        routines.
00189 *
00190 *        DPTTRF
00191 *
00192          SRNAMT = 'DPTTRF'
00193          INFOT = 1
00194          CALL DPTTRF( -1, D, E, INFO )
00195          CALL CHKXER( 'DPTTRF', INFOT, NOUT, LERR, OK )
00196 *
00197 *        DPTTRS
00198 *
00199          SRNAMT = 'DPTTRS'
00200          INFOT = 1
00201          CALL DPTTRS( -1, 0, D, E, X, 1, INFO )
00202          CALL CHKXER( 'DPTTRS', INFOT, NOUT, LERR, OK )
00203          INFOT = 2
00204          CALL DPTTRS( 0, -1, D, E, X, 1, INFO )
00205          CALL CHKXER( 'DPTTRS', INFOT, NOUT, LERR, OK )
00206          INFOT = 6
00207          CALL DPTTRS( 2, 1, D, E, X, 1, INFO )
00208          CALL CHKXER( 'DPTTRS', INFOT, NOUT, LERR, OK )
00209 *
00210 *        DPTRFS
00211 *
00212          SRNAMT = 'DPTRFS'
00213          INFOT = 1
00214          CALL DPTRFS( -1, 0, D, E, DF, EF, B, 1, X, 1, R1, R2, W, INFO )
00215          CALL CHKXER( 'DPTRFS', INFOT, NOUT, LERR, OK )
00216          INFOT = 2
00217          CALL DPTRFS( 0, -1, D, E, DF, EF, B, 1, X, 1, R1, R2, W, INFO )
00218          CALL CHKXER( 'DPTRFS', INFOT, NOUT, LERR, OK )
00219          INFOT = 8
00220          CALL DPTRFS( 2, 1, D, E, DF, EF, B, 1, X, 2, R1, R2, W, INFO )
00221          CALL CHKXER( 'DPTRFS', INFOT, NOUT, LERR, OK )
00222          INFOT = 10
00223          CALL DPTRFS( 2, 1, D, E, DF, EF, B, 2, X, 1, R1, R2, W, INFO )
00224          CALL CHKXER( 'DPTRFS', INFOT, NOUT, LERR, OK )
00225 *
00226 *        DPTCON
00227 *
00228          SRNAMT = 'DPTCON'
00229          INFOT = 1
00230          CALL DPTCON( -1, D, E, ANORM, RCOND, W, INFO )
00231          CALL CHKXER( 'DPTCON', INFOT, NOUT, LERR, OK )
00232          INFOT = 4
00233          CALL DPTCON( 0, D, E, -ANORM, RCOND, W, INFO )
00234          CALL CHKXER( 'DPTCON', INFOT, NOUT, LERR, OK )
00235       END IF
00236 *
00237 *     Print a summary line.
00238 *
00239       CALL ALAESM( PATH, OK, NOUT )
00240 *
00241       RETURN
00242 *
00243 *     End of DERRGT
00244 *
00245       END
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